US4092285A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Encapsulation of critical chemicals
Assignee: Rhein Chemie Corp
•
Filing: 1976-07-30
•
Granted: 1978-05-30
•
Expires: 1996-07-30
Abstract
Abstract A composition of matter useful for dispersing a critical chemical in a rubber or plastic compound, said composition comprising from about 60 to about 95 percent by weight of a critical chemical and from about 5 to about 40 percent by weight of a binder, said binder comprising at least one component selected from (i) liquids compatible with said rubber or plastic compound and with the other binder components and (ii) waxes having a sharp melting point in the range of 55°-80° C, and a polymer having a molecular weight of at least about 50,000 which when combined with the other binder components produces a binder which is a non-tacky gel below about 53° C. The composition can additionally comprise a fine powder reinforcing agent, which can also serve as a stabilizer for the binder.
Inventors
- 👤 Thomas J. Leo
- 👤 Michael J. Reynolds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:44
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/20; C08J3/22; C08J3/226; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 108
Claim 1
Independent Claim
127 words
A composition of matter useful for rapidly and homogeneously dispersing a critical chemical in a rubber or plastic compound, said composition comprising from about 60 to about 95 percent by weight of a critical chemcial and from about 5 to about 40 percent by weight of a binder, said binder comprising at least one component selected from (i) liquids compatible with said rubber or plastic compound and with the other binder components, and (ii) waxes having a sharp melting point in the range of about 55°-80° C, and a polymer having a molecular weight of at least about 50,000 which when combined with the other binder components produces a binder which is non-tacky gel below about 53° C. and returns to a liquid above about 53° C.
Claim 2
Dependent Claim
127 words
A composition of matter useful for rapidly and homogeneously dispersing a critical chemical in a rubber or plastic compound, said composition comprising from about 60 to about 95 percent by weight of a critical chemcial and from about 5 to about 40 percent by weight of a binder, said binder comprising at least one component selected from (i) liquids compatible with said rubber or plastic compound and with the other binder components, and (ii) waxes having a sharp melting point in the range of about 55°-80° C, and a polymer having a molecular weight of at least about 50,000 which when combined with the other binder components produces a binder which is non-tacky gel below about 53° C. and returns to a liquid above about 53° C.
Claim 3
Dependent Claim
21 words
The composition of claim 1 wherein the polymer comprises from about 2 to about 20 percent by weight of the binder.
Claim 4
Dependent Claim
41 words
The composition of claim 2 wherein the liquid is selected from the group consisting of rubber process and extender oils and chemical plasticizers, and the polymer is selected from the group consisting of chlorosulfonated polyethylene, ethylene-propylene terpolymers, natural rubber and neoprene.
Claim 5
Dependent Claim
18 words
The composition of claim 1 wherein the binder further comprises a fine powder reinforcing agent for the binder.
Claim 6
Dependent Claim
20 words
The composition of claim 4 wherein the reinforcing agant comprises less than about 3 percent by weight of the binder.
Claim 7
Dependent Claim
21 words
The composition of claim 5 wherein the polymer comprises from about 2 to about 20 percent by weight of the binder.
Claim 8
Dependent Claim
41 words
The composition of claim 6 wherein the liquid is selected from the group consisting of rubber process and extender oils and chemical plasticizers, and the polymer is selected from the group consisting of chlorosulfonated polyethylene, ethylene-propylene terpolymers, natural rubber and neoprene.
Claim 9
Dependent Claim
107 words
A composition of matter useful for rapidly and homogeneously dispersing a critical chemical in a rubber or plastic compound, said composition comprising from about 60 to about 95 percent by weight of a critical chemical and from about 5 to about 40 percent by weight of a binder, said binder comprising a liquid compatible with said rubber or plastic compound and with the other binder components, and a polymer having a molecular weight of at least about 50,000 which when combined with the other binder components produces a binder which is a non-tacky gel below about 53° C. and returns to a liquid above about 53° C.
Claim 10
Dependent Claim
107 words
A composition of matter useful for rapidly and homogeneously dispersing a critical chemical in a rubber or plastic compound, said composition comprising from about 60 to about 95 percent by weight of a critical chemical and from about 5 to about 40 percent by weight of a binder, said binder comprising a liquid compatible with said rubber or plastic compound and with the other binder components, and a polymer having a molecular weight of at least about 50,000 which when combined with the other binder components produces a binder which is a non-tacky gel below about 53° C. and returns to a liquid above about 53° C.
Claim 11
Dependent Claim
37 words
The composition of claim 8 wherein the liquid comprises from about 80 to about 98 percent by weight of the binder and the polymer comprises from about 2 to about 20 percent by weight of the binder.
Claim 12
Dependent Claim
41 words
The composition of claim 9 wherein the liquid is selected from the group consisting of rubber process and extender oils and chemical plasticizers, and the polymer is selected from the group consisting of chlorosulfonated polyethylene, ethylene-propylene terpolymers, natural rubber and neoprene.
Claim 13
Dependent Claim
17 words
The composition of claim 10 wherein the liquid is dioctyl phthalate and the polymer is neoprene rubber.
Claim 14
Dependent Claim
19 words
The composition of claim 10 wherein the liquid is a rubber process oil and the polymer is natural rubber.
Claim 15
Dependent Claim
18 words
The composition of claim 8 wherein the binder further comprises a fine powder reinforcing agent for the binder.
Claim 16
Dependent Claim
20 words
The composition of claim 13 wherein the reinforcing agent comprises less than about 3 percent by weight of the binder.
Claim 17
Dependent Claim
21 words
The composition of claim 14 wherein the polymer comprises from about 2 to about 20 percent by weight of the binder.
Claim 18
Dependent Claim
41 words
The composition of claim 15 wherein the liquid is selected from the group consisting of rubber process and extender oils and chemical plasticizers, and the polymer is selected from the group consisting of chlorosulfonated polyethylene, ethylene-propylene terpolymers, natural rubber and neoprene.
Claim 19
Dependent Claim
26 words
The composition of claim 16 wherein the liquid is rubber process oil, the polymer is an ethylene-propylene terpolymer, and the reinforcing agent is fumed collidal silica.
Claim 20
Dependent Claim
24 words
The composition of claim 16 wherein the liquid is dioctyl phthalate, the polymer is chlorosulfonated polyethylene, and the reinforcing agent is tribasic lead sulfate.
Claim 21
Dependent Claim
106 words
A composition of matter useful for rapidly and homogeneously dispersing a critical chemical in a rubber or plastic compound, said composition comprising from about 60 to about 95 percent by weight of a critical chemical and from about 5 to about 40 percent by weight of a binder, said binder comprising a wax having a sharp melting point in the range of about 55°-80° C, and a polymer having a molecular weight of at lest about 50,000 which when combined with the other binder component produces a binder which is a non-tacky gel below about 53° C. and returns to a liquid above about 53° C.
Claim 22
Dependent Claim
106 words
A composition of matter useful for rapidly and homogeneously dispersing a critical chemical in a rubber or plastic compound, said composition comprising from about 60 to about 95 percent by weight of a critical chemical and from about 5 to about 40 percent by weight of a binder, said binder comprising a wax having a sharp melting point in the range of about 55°-80° C, and a polymer having a molecular weight of at lest about 50,000 which when combined with the other binder component produces a binder which is a non-tacky gel below about 53° C. and returns to a liquid above about 53° C.
Claim 23
Dependent Claim
37 words
The composition of claim 19 wherein the wax comprises from about 80 to about 98 percent by weight of the binder and the polymer comprises from about 2 to about 20 percent by weight of the binder.
Claim 24
Dependent Claim
23 words
The composition of claim 20 wherein the polymer is selected from the group consisting of chlorosulfonated polyethylene, ethylene-propylene terpolymers, natural rubber and neoprene.
Claim 25
Dependent Claim
18 words
The composition of claim 19 wherein the binder further comprises a fine powder reinforcing agent for the binder.
Claim 26
Dependent Claim
20 words
The composition of claim 22 wherein the reinforcing agent comprises less than about 3 percent by weight of the binder.
Claim 27
Dependent Claim
37 words
The composition of claim 23 wherein the wax comprises from about 80 to about 98 percent by weight of the binder and the polymer comprises from about 2 to about 20 percent by weight of the binder.
Claim 28
Dependent Claim
23 words
The composition of claim 24 wherein the polymer is selected from the group consisting of chlorosulfonated polyethylene, ethylene-propylene terpolymers, natural rubber and neoprene.
Claim 29
Dependent Claim
121 words
A composition of matter useful for rapidly and homogeneously dispersing a critical chemical in a rubber or plastic compound, said composition comprising from about 60 to about 95 percent by weight of a critical chemical and from about 5 to about 40 percent by weight of a binder, said binder comprising a liquid compatible with said rubber or plastic compound and with the other binder components, a wax having a sharp melting point in the range of about 55°-80° C, and a polymer having a molecular weight of at least about 50,000 which when combined with the other binder components produces a binder which is a non-tacky gel below about 53° C. and returns to a liquid above about 53° C.
Claim 30
Dependent Claim
121 words
A composition of matter useful for rapidly and homogeneously dispersing a critical chemical in a rubber or plastic compound, said composition comprising from about 60 to about 95 percent by weight of a critical chemical and from about 5 to about 40 percent by weight of a binder, said binder comprising a liquid compatible with said rubber or plastic compound and with the other binder components, a wax having a sharp melting point in the range of about 55°-80° C, and a polymer having a molecular weight of at least about 50,000 which when combined with the other binder components produces a binder which is a non-tacky gel below about 53° C. and returns to a liquid above about 53° C.
Claim 31
Dependent Claim
40 words
The composition of claim 26 wherein the liquid and the wax comprise from about 80 to about 98 percent by weight of the binder and the polymer comprises from about 2 to about 20 percent by weight of the binder.
Claim 32
Dependent Claim
41 words
The composition of claim 27 wherein the liquid is selected from the group consisting of rubber process and extender oils and chemical plasticizers, and the polymer is selected from the group consisting of chlorosulfonated polyethylene, ethylene-propylene terpolymers, natural rubber and neoprene.
Claim 33
Dependent Claim
19 words
The composition of claim 28 wherein the liquid is rubber process oil and the polymer is an ethylene-propylene terpolymer.
Claim 34
Dependent Claim
18 words
The composition of claim 28 wherein the liquid is rubber process oil and the polymer is neoprene rubber.
Claim 35
Dependent Claim
18 words
The composition of claim 26 wherein the binder further comprises a fine powder reinforcing agent for the binder.
Claim 36
Dependent Claim
20 words
The composition of claim 31 wherein the reinforcing agent comprises less than about 3 percent by weight of the binder.
Claim 37
Dependent Claim
40 words
The composition of claim 32 wherein the liquid and the wax comprise from about 80 to about 98 percent by weight of the binder and the polymer comprises from about 2 to about 20 percent by weight of the binder.
Claim 38
Dependent Claim
41 words
The composition of claim 33 wherein the liquid is selected from the group consisting of rubber process and extender oils and chemical plasticizers, and the polymer is selected from the group consisting of chlorosulfonated polyethylene, ethylene-propylene terpolymers, natural rubber and neoprene.
Claim 39
Dependent Claim
26 words
The composition of claim 34 wherein the liquid is rubber process oil, the polymer is an ethylene-propylene terpolymer, and the reinforcing agent is fumed colloidal silica.
Claim 40
Dependent Claim
24 words
The composition of claim 34 wherein the liquid is rubber process oil, the polymer is chlorosulfonated polyethylene, and the reinforcing agent is magnesium oxide.
Claim 41
Dependent Claim
24 words
The composition of claim 34 wherein the liquid is rubber process oil, the polymer is chlorosulfonated polyethylene, and the reinforcing agent is fumed litharge.
Claim 42
Dependent Claim
100 words
A binder for encapsulating critical chemicals which are to be rapidly and homogeneously dispersed in a rubber or plastic compound, said binder comprising at least one component selected from (i) liquids compatible with said rubber or plastic compound and with the other binder components, and (ii) waxes having a sharp melting point in the range of about 55°-80° C, and a polymer having a molecular weight of at least about 50,000 which when combined with the other binder components produces a binder which is a non-tacky gel below about 53° C. and returns to a liquid above about 53° C.
Claim 43
Dependent Claim
100 words
A binder for encapsulating critical chemicals which are to be rapidly and homogeneously dispersed in a rubber or plastic compound, said binder comprising at least one component selected from (i) liquids compatible with said rubber or plastic compound and with the other binder components, and (ii) waxes having a sharp melting point in the range of about 55°-80° C, and a polymer having a molecular weight of at least about 50,000 which when combined with the other binder components produces a binder which is a non-tacky gel below about 53° C. and returns to a liquid above about 53° C.
Claim 44
Dependent Claim
21 words
The binder of claim 38 wherein the polymer comprises from about 2 to about 20 percent by weight of the binder.
Claim 45
Dependent Claim
41 words
The binder of claim 39 wherein the liquid is selected from the group consisting of rubber process and extender oils and chemical plasticizers, and the polymer is selected from the group consisting of chlorosulfonated polyethylene, ethylene-propylene terpolymers, natural rubber and neoprene.
Claim 46
Dependent Claim
12 words
The binder of claim 38 further comprising a fine powder reinforcing agent.
Claim 47
Dependent Claim
20 words
The binder of claim 41 wherein the reinforcing agent comprises less than about 3 percent by weight of the binder.
Claim 48
Dependent Claim
21 words
The binder of claim 42 wherein the polymer comprises from about 2 to about 20 perent by weight of the binder.
Claim 49
Dependent Claim
41 words
The binder of claim 43 wherein the liquid is selected from the group consisting of rubber process and extender oils and chemical plasticizers, and the polymer is selected from the group consisting of chlorosulfonated polyethylene, ethylene-propylene terpolymers, natural rubber and neoprene.
Claim 50
Dependent Claim
79 words
A binder for encapsulating critical chemicals which are to be rapidly and homogeneously dispersed in a rubber or plastic compound, said binder comprising a liquid compatible with said rubber or plastic compound and with the other binder components, and a polymer having a molecular weight of at least about 50,000 which when combined with the other binder components produces a binder which is a non-tacky gel below about 53° C. and returns to a liquid above about 53° C.
Claim 51
Dependent Claim
79 words
A binder for encapsulating critical chemicals which are to be rapidly and homogeneously dispersed in a rubber or plastic compound, said binder comprising a liquid compatible with said rubber or plastic compound and with the other binder components, and a polymer having a molecular weight of at least about 50,000 which when combined with the other binder components produces a binder which is a non-tacky gel below about 53° C. and returns to a liquid above about 53° C.
Claim 52
Dependent Claim
37 words
The binder of claim 45 wherein the liquid comprises from about 80 to about 98 percent by weight of the binder and the polymer comprises from about 2 to about 20 percent by weight of the binder.
Claim 53
Dependent Claim
41 words
The binder of claim 46 wherein the liquid is selected from the group consisting of rubber process and extender oils and chemical plasticizers, and the polymer is selected from the group consisting of chlorosulfonated polyethylene, ethylene-propylene terpolymers, natural rubber and neoprene.
Claim 54
Dependent Claim
17 words
The binder of claim 47 wherein the liquid is dioctyl phthalate and the polymer is neoprene rubber.
Claim 55
Dependent Claim
18 words
The binder of claim 47 wherein the liquid is rubber process oil and the polymer is natural rubber.
Claim 56
Dependent Claim
12 words
The binder of claim 45 further comprising a fine powder reinforcing agent.
Claim 57
Dependent Claim
20 words
The binder of claim 50 wherein the reinforcing agent comprises less than about 3 percent by weight of the binder.
Claim 58
Dependent Claim
37 words
The binder of claim 51 wherein the liquid comprises from about 80 to about 98 percent by weight of the binder and the polymer comprises from about 2 to about 20 percent by weight of the binder.
Claim 59
Dependent Claim
41 words
The binder of claim 52 wherein the liquid is selected from the group consisting of rubber process and extender oils and chemical plasticizers, and the polymer is selected from the group consisting of chlorosulfonated polyethylene, ethylene-propylene terpolymers, natural rubber and neoprene.
Claim 60
Dependent Claim
26 words
The binder of claim 53 wherein the liquid is rubber process oil, the polymer is an ethylene-propylene terpolymer, and the reinforcing agent is fumed colloidal silica.
Claim 61
Dependent Claim
24 words
The binder of claim 53 wherein the liquid is dioctyl phthalate, the polymer is chlorosulfonated polyethylene, and the reinforcing agent is tribasic lead sulfate.
Claim 62
Dependent Claim
78 words
A binder for encapsulating critical chemicals which are to be rapidly and homogeneously dispersed in a rubber or plastic compound, said binder comprising a wax having a sharp melting point in the range of about 55°-80° C, and a polymer having a molecular weight of at least about 50,000 which when combined with the other binder components produces a binder which is a non-tacky gel below about 53° C. and returns to a liquid above about 53° C.
Claim 63
Dependent Claim
78 words
A binder for encapsulating critical chemicals which are to be rapidly and homogeneously dispersed in a rubber or plastic compound, said binder comprising a wax having a sharp melting point in the range of about 55°-80° C, and a polymer having a molecular weight of at least about 50,000 which when combined with the other binder components produces a binder which is a non-tacky gel below about 53° C. and returns to a liquid above about 53° C.
Claim 64
Dependent Claim
37 words
The binder of claim 56 wherein the wax comprises from about 80 to about 98 percent by weight of the binder and the polymer comprises from about 2 to about 20 percent by weight of the binder.
Claim 65
Dependent Claim
23 words
The binder of claim 57 wherein the polymer is selected from the group consisting of chlorosulfonated polyethylene, ethylene-propylene terpolymers, natural rubber and neoprene.
Claim 66
Dependent Claim
12 words
The binder of claim 56 further comprises a fine powder reinforcing agent.
Claim 67
Dependent Claim
20 words
The binder of claim 59 wherein the reinforcing agent comprises less than about 3 percent by weight of the binder.
Claim 68
Dependent Claim
37 words
The binder of claim 60 wherein the wax comprises from about 80 to about 98 percent by weight of the binder and the polymer comprises from about 2 to about 20 percent by weight of the binder.
Claim 69
Dependent Claim
23 words
The binder of claim 61 wherein the polymer is selected from the group consisting of chlorosulfonated polyethylene, ethylene-propylene terpolymers, natural rubber and neoprene.
Claim 70
Dependent Claim
92 words
A binder for encapsulating critical chemicals which are to be rapidly and homogeneously dispersed in a rubber or plastic compound, said binder comprising a liquid with said rubber or plastic compound and with the other binder components, a wax having a sharp melting point in the range of about 55°-80° C, and a polymer having a molecular weight of at least about 50,000 which when combined with the other binder components produces a binder which is a non-tacky gel below about 53° C. and returns to a liquid above about 53° C.
Claim 71
Dependent Claim
92 words
A binder for encapsulating critical chemicals which are to be rapidly and homogeneously dispersed in a rubber or plastic compound, said binder comprising a liquid with said rubber or plastic compound and with the other binder components, a wax having a sharp melting point in the range of about 55°-80° C, and a polymer having a molecular weight of at least about 50,000 which when combined with the other binder components produces a binder which is a non-tacky gel below about 53° C. and returns to a liquid above about 53° C.
Claim 72
Dependent Claim
40 words
The binder of claim 63 wherein the liquid and the wax comprise from about 80 to about 98 percent by weight of the binder and the polymer comprises from about 2 to about 20 percent by weight of the binder.
Claim 73
Dependent Claim
41 words
The binder of claim 64 wherein the liquid is selected from the group consisting of rubber process and extender oils and chemical plasticizers, and the polymer is selected from the group consisting of chlorosulfonated polyethylene, ethylene-propylene terpolymers, natural rubber and neoprane.
Claim 74
Dependent Claim
19 words
The binder of claim 65 wherein the liquid is rubber process oil and the polymer is an ethylene-propylene terpolymer.
Claim 75
Dependent Claim
18 words
The binder of claim 65 wherein the liquid is rubber process oil and the polymer is neoprene rubber.
Claim 76
Dependent Claim
12 words
The binder of claim 63 further comprising a fine powder reinforcing agent.
Claim 77
Dependent Claim
20 words
The binder of claim 68 wherein the reinforcing agent comprises less than about 3 percent by weight of the binder.
Claim 78
Dependent Claim
40 words
The binder of claim 69 wherein the liquid and the wax comprise from about 80 to about 98 percent by weight of the binder and the polymer comprises from about 2 to about 20 percent by weight of the binder.
Claim 79
Dependent Claim
41 words
The binder of claim 70 wherein the liquid is selected from the group consisting of rubber process and extender oils and chemical plasticizers, and the polymer is selected from the group consisting of chlorosulfonated polyethylene, ethylene-propylene terpolymers, natural rubber and neoprene.
Claim 80
Dependent Claim
25 words
The binder of claim 71 wherein the liquid is rubber process oil, the polymer is ethylene-propylene terpolymer, and the reinforcing agent is fumed colloidal silica.
Claim 81
Dependent Claim
24 words
The binder of claim 71 wherein the liquid is rubber process oil, the polymer is chlorosulfonated polyethylene, and the reinforcing agent is magnesium oxide.
Claim 82
Dependent Claim
24 words
The binder of claim 71 wherein the liquid is rubber process oil, the polymer is chlorosulfonated polyethylene, and the reinforcing agent is fumed litharge.
Claim 83
Dependent Claim
124 words
A process for preparing a binder for encapsulating critical chemicals which are to be rapidly and homogeneously dispersed in a rubber or plastic compound comprising (i) heating a liquid compatible with said rubber or plastic compound and with the other binder components to a temperature in the range of about 60°-150° C under slow agitation and maintaining the temperature within this range throughout the process, (ii) adding a heat stable polymer having a molecular weight of at least about 50,000 which when mixed with the other binder components produces a binder which is a non-tacky gel below about 53° C and returns to a liquid above about 53° C., under slow agitation, and (iii) mixing the binder components until a homogeneous binder is obtained.
Claim 84
Dependent Claim
124 words
A process for preparing a binder for encapsulating critical chemicals which are to be rapidly and homogeneously dispersed in a rubber or plastic compound comprising (i) heating a liquid compatible with said rubber or plastic compound and with the other binder components to a temperature in the range of about 60°-150° C under slow agitation and maintaining the temperature within this range throughout the process, (ii) adding a heat stable polymer having a molecular weight of at least about 50,000 which when mixed with the other binder components produces a binder which is a non-tacky gel below about 53° C and returns to a liquid above about 53° C., under slow agitation, and (iii) mixing the binder components until a homogeneous binder is obtained.
Claim 85
Dependent Claim
24 words
The process of claim 75 wherein a fine powder reinforcing agent for the binder is added to the heated liquid simultaneously with the polymer.
Claim 86
Dependent Claim
140 words
A process for preparing a binder for encapsulating critical chemicals which are to be rapidly and homogeneously dispersed in a rubber or plastic compound comprising (i) heating a liquid compatible with said rubber or plastic compound and with the other binder components to a temperature in the range of about 60°-150° C under slow agitation and maintaining the temperature within this range throughout the process, (ii) adding a heat stable polymer having a molecular weight of at least about 50,000 which when mixed with the other binder components produces a binder which is a non-tacky gel below about 53° C and returns to a liquid above about 53° C., under slow agitation, (iii) adding a wax having a sharp melting point in the range of about 55°-80° C, and (iv) mixing the binder components until a homogeneous binder is obtained.
Claim 87
Dependent Claim
140 words
A process for preparing a binder for encapsulating critical chemicals which are to be rapidly and homogeneously dispersed in a rubber or plastic compound comprising (i) heating a liquid compatible with said rubber or plastic compound and with the other binder components to a temperature in the range of about 60°-150° C under slow agitation and maintaining the temperature within this range throughout the process, (ii) adding a heat stable polymer having a molecular weight of at least about 50,000 which when mixed with the other binder components produces a binder which is a non-tacky gel below about 53° C and returns to a liquid above about 53° C., under slow agitation, (iii) adding a wax having a sharp melting point in the range of about 55°-80° C, and (iv) mixing the binder components until a homogeneous binder is obtained.
Claim 88
Dependent Claim
24 words
The process of claim 77 wherein a fine powder reinforcing agent for the binder is added to the heated liquid simultaneously with the polymer.
Claim 89
Dependent Claim
123 words
A process for preparing a binder for encapsulating critical chemicals which are to be rapidly and homogeneously dispersed in a rubber or plastic compound comprising (i) heating a wax having a sharp melting point in the range of about 55°-80° C to a temperature in the range of about 60°-150° C under slow agitation and maintaining the temperature within this range throughout the process, (ii) adding a heat stable polymer having a molecular weight of at least about 50,000 which when mixed with the other binder components produces a binder which is a non-tacky gel below about 53° C and returns to a liquid above about 53° C., under slow agitation, and (iii) mixing the binder components until a homogeneous binder is obtained.
Claim 90
Dependent Claim
123 words
A process for preparing a binder for encapsulating critical chemicals which are to be rapidly and homogeneously dispersed in a rubber or plastic compound comprising (i) heating a wax having a sharp melting point in the range of about 55°-80° C to a temperature in the range of about 60°-150° C under slow agitation and maintaining the temperature within this range throughout the process, (ii) adding a heat stable polymer having a molecular weight of at least about 50,000 which when mixed with the other binder components produces a binder which is a non-tacky gel below about 53° C and returns to a liquid above about 53° C., under slow agitation, and (iii) mixing the binder components until a homogeneous binder is obtained.
Claim 91
Dependent Claim
27 words
The process of claim 79 wherein a fine powder reinforcing agent for the binder is added to the heated liquid prior to or simultaneously with the polymer.
Claim 92
Dependent Claim
108 words
A process for preparing a binder for encapsulating critical chemicals which are to be rapidly and homogeneously dispersed in a rubber or plastic compound comprising (i) preparing an emulsion of a liquid compatible with said rubber or plastic compound and with the other binder components, (ii) adding to the emulsion a latex of a heat sensitive polymer having a molecular weight of at least about 50,000 which when mixed with the other binder components and coagulated produces a binder which is a non-tacky gel below about 53° C and returns to a liquid above about 53° C., and (iii) coagulating the mixture of the emulsion and the latex.
Claim 93
Dependent Claim
108 words
A process for preparing a binder for encapsulating critical chemicals which are to be rapidly and homogeneously dispersed in a rubber or plastic compound comprising (i) preparing an emulsion of a liquid compatible with said rubber or plastic compound and with the other binder components, (ii) adding to the emulsion a latex of a heat sensitive polymer having a molecular weight of at least about 50,000 which when mixed with the other binder components and coagulated produces a binder which is a non-tacky gel below about 53° C and returns to a liquid above about 53° C., and (iii) coagulating the mixture of the emulsion and the latex.
Claim 94
Dependent Claim
15 words
The process of claim 81 wherein the coagulated mixture is washed with water and dried.
Claim 95
Dependent Claim
134 words
A process for preparing a binder for encapsulating critical chemicals which are to be rapidly and homogeneously dispersed in a rubber or plastic compound comprising (i) preparing an emulsion of a liquid compatible with said rubber or plastic compound and with the other binder components, (ii) preparing an emulsion of a wax having a sharp melting point in the range of about 55°-80° C, (iii) mixing the emulsions, (iv) adding to a mixture of the emulsions a latex of a heat sensitive polymer having a molecular weight of at least about 50,000 which when mixed with the other binder components and coagulated produces a binder which is a non-tacky gel below about 50° C and returns to a liquid above about 53° C., and (v) coagulating the mixture of the emulsions and the latex.
Claim 96
Dependent Claim
134 words
A process for preparing a binder for encapsulating critical chemicals which are to be rapidly and homogeneously dispersed in a rubber or plastic compound comprising (i) preparing an emulsion of a liquid compatible with said rubber or plastic compound and with the other binder components, (ii) preparing an emulsion of a wax having a sharp melting point in the range of about 55°-80° C, (iii) mixing the emulsions, (iv) adding to a mixture of the emulsions a latex of a heat sensitive polymer having a molecular weight of at least about 50,000 which when mixed with the other binder components and coagulated produces a binder which is a non-tacky gel below about 50° C and returns to a liquid above about 53° C., and (v) coagulating the mixture of the emulsions and the latex.
Claim 97
Dependent Claim
15 words
The process of claim 83 wherein the coagulated mixture is washed with water and dried.
Claim 98
Dependent Claim
155 words
A process for encapsulating critical chemicals, which are to be rapidly and homogeneously dispersed in a rubber or plastic compound, with a binder which comprises at least one component selected from (a) liquids compatible with said rubber or plastic compound and with the other binder components, and (b) waxes having a sharp melting point in the range of about 55°-80° C, and a polymer having a molecular weight of at least about 50,000 which when combined with the other binder components produces a binder which is a non-tacky gel below about 53° C and returns to a liquid above about 53° C., said process comprising (i) introducing a critical chemical in solid fine particulate form into a high-speed mixer and mixing until the chemical is substantially free of lumps, (ii) heating the binder until it is a liquid, and (iii) injecting the heated binder into the mixer and mixing until a uniform product is obtained.
Claim 99
Dependent Claim
155 words
A process for encapsulating critical chemicals, which are to be rapidly and homogeneously dispersed in a rubber or plastic compound, with a binder which comprises at least one component selected from (a) liquids compatible with said rubber or plastic compound and with the other binder components, and (b) waxes having a sharp melting point in the range of about 55°-80° C, and a polymer having a molecular weight of at least about 50,000 which when combined with the other binder components produces a binder which is a non-tacky gel below about 53° C and returns to a liquid above about 53° C., said process comprising (i) introducing a critical chemical in solid fine particulate form into a high-speed mixer and mixing until the chemical is substantially free of lumps, (ii) heating the binder until it is a liquid, and (iii) injecting the heated binder into the mixer and mixing until a uniform product is obtained.
Claim 100
Dependent Claim
17 words
The process of claim 85 wherein the product is subsequently formed into a non-blocking, uniformly shaped mass.
Claim 101
Dependent Claim
185 words
A composition of matter useful for rapidly and homogeneously dispersing a critical chemical in a rubber or plastic compound, said composition comprising from about 60 to about 95 percent by weight of a critical chemical and from about 5 to about 40 percent by weight of a binder, said binder comprising at least one component selected from (a) liquids compatible with said rubber or plastic compound and with the other binder components, and (b) waxes having a sharp melting point in the range of about 55°-80° C, and a polymer having a molecular weight of at least about 50,000 which when combined with the other binder components produces a binder which is a non-tacky gel below about 53° C. and returns to a liquid above about 53° C., said composition prepared by the process comprising (i) introducing a critical chemical in solid fine particulate form into a high-speed mixer and mixing until the chemical is substantially free of lumps, (ii) heating the binder until it is a liquid, and (iii) injecting the heated binder into the mixer and mixing until a uniform product is obtained.
Claim 102
Dependent Claim
185 words
A composition of matter useful for rapidly and homogeneously dispersing a critical chemical in a rubber or plastic compound, said composition comprising from about 60 to about 95 percent by weight of a critical chemical and from about 5 to about 40 percent by weight of a binder, said binder comprising at least one component selected from (a) liquids compatible with said rubber or plastic compound and with the other binder components, and (b) waxes having a sharp melting point in the range of about 55°-80° C, and a polymer having a molecular weight of at least about 50,000 which when combined with the other binder components produces a binder which is a non-tacky gel below about 53° C. and returns to a liquid above about 53° C., said composition prepared by the process comprising (i) introducing a critical chemical in solid fine particulate form into a high-speed mixer and mixing until the chemical is substantially free of lumps, (ii) heating the binder until it is a liquid, and (iii) injecting the heated binder into the mixer and mixing until a uniform product is obtained.
Claim 103
Dependent Claim
21 words
The composition of claim 87 wherein the polymer comprises from about 2 to about 20 percent by weight of the binder.
Claim 104
Dependent Claim
41 words
The composition of claim 88 wherein the liquid is selected from the group consisting of rubber process and extender oils and chemical plasticizers, and the polymer is selected from the group consisting of chlorosulfonated polyethylene, ethylene-propylene terpolymers, natural rubber and neoprene.
Claim 105
Dependent Claim
18 words
The composition of claim 87 wherein the binder further comprises a fine powder reinforcing agent for the binder.
Claim 106
Dependent Claim
20 words
The composition of claim 90 wherein the reinforcing agent comprises less than about 3 percent by weight of the binder.
Claim 107
Dependent Claim
21 words
The composition of claim 91 wherein the polymer comprises from about 2 to about 20 percent by weight of the binder.
Claim 108
Dependent Claim
41 words
The composition of claim 92 wherein the liquid is selected from the group consisting of rubber process and extender oils and chemical plasticizers, and the polymer is selected from the group consisting of chlorosulfonated polyethylene, ethylene-propylene terpolymers, natural rubber and neoprene.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-05-29 | 1981-11-28 | 1982-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-29 | 1985-11-28 | 1986-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-29 | 1989-11-28 | 1990-05-30 | $7700.00 | Window Closed / Lapsed |