US4485198A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Monomer-plasticized elastomers and process for producing same
Assignee: Sw Industries Inc
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Filing: 1982-09-23
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Granted: 1984-11-27
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Expires: 2002-09-23
Abstract
Abstract Elastomers are plasticized with a polymerizable monomer, in homogeneous admixture therewith, by adding the monomer to a latex of the elastomer, free of polymerization initiator, followed by coagulation of the monomer and polymer solids. The coagulated solids recovered from the latex may be compounded with a polymerization initiator for the monomer and a vulcanizing agent for the polymer and, optionally, an inorganic filler, and shaped into the desired product form. Polymerization of the polymer and vulcanization of the elastomeric polymer are initiated after shaping.
Inventors
- 👤 Parviz Hamed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:35
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/20; C08J3/205; C08J3/21; C08F; C08F291/00; C08F291/02; C08J2321/00; C08J2321/02
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
120 words
A method for producing a non-crosslinked vulcanizable elastomeric composition comprising: providing 100 parts by weight, solids basis, of a latex of an elastomeric polymer; adding to and admixing with said latex 0.5-200 parts by weight of a polymerizable monomer; coagulating the solids in said latex including said monomer and said elastomeric polymer, said admixing and coagulating being effected in the absence of a polymerization initiator for the monomer with substantially no polymerization of said monomer and substantially no crosslinking of or grafting onto said elastomeric polymer; and separating said coagulated solids from the liquid phase as the elastomeric composition in the form of a homogeneous admixture of said polymer and said monomer free of any polymerization initiator for the monomer.
Claim 2
Independent Claim
120 words
A method for producing a non-crosslinked vulcanizable elastomeric composition comprising: providing 100 parts by weight, solids basis, of a latex of an elastomeric polymer; adding to and admixing with said latex 0.5-200 parts by weight of a polymerizable monomer; coagulating the solids in said latex including said monomer and said elastomeric polymer, said admixing and coagulating being effected in the absence of a polymerization initiator for the monomer with substantially no polymerization of said monomer and substantially no crosslinking of or grafting onto said elastomeric polymer; and separating said coagulated solids from the liquid phase as the elastomeric composition in the form of a homogeneous admixture of said polymer and said monomer free of any polymerization initiator for the monomer.
Claim 3
Dependent Claim
21 words
The process of claim 1 wherein the weight ratio of monomer to polymer is within the range of 2:5 to 1:2.
Claim 4
Dependent Claim
25 words
The process of claim 1 or 2 wherein said polymeric elastomer is a copolymer of butadiene and acrylonitrile and said monomer is a polyfunctional monomer.
Claim 5
Dependent Claim
19 words
The process of claim 1 or 2 wherein said polymeric elastomer is a carboxylated copolymer of butadiene and acrylonitrile.
Claim 6
Dependent Claim
18 words
The process of claim 3 wherein said polyfunctional monomer is an acrylic or methacrylic ester of a polyol.
Claim 7
Dependent Claim
18 words
The process of claim 4 wherein said polyfunctional monomer is an acrylic or methacrylic ester of a polyol.
Claim 8
Dependent Claim
102 words
A monomer-plasticized, non-crosslinked, elastomer composition in the form of a homogeneous admixture consisting essentially of an elastomeric polymer and a polymerizable monomer, free of filler, and produced by adding and admixing 5.0-200 parts by weight of said polymerizable monomer and 100 parts by weight, solids basis, of a latex of said elastomeric polymer, coagulating said latex and separating the coagulated solids to recover same as said elastomeric composition, said admixing and coagulating being effected in the absence of a polymerization initiator for the monomer with substantially no polymerization of said monomer and substantially no crosslinking of or grafting onto said elastomeric polymer.
Claim 9
Dependent Claim
102 words
A monomer-plasticized, non-crosslinked, elastomer composition in the form of a homogeneous admixture consisting essentially of an elastomeric polymer and a polymerizable monomer, free of filler, and produced by adding and admixing 5.0-200 parts by weight of said polymerizable monomer and 100 parts by weight, solids basis, of a latex of said elastomeric polymer, coagulating said latex and separating the coagulated solids to recover same as said elastomeric composition, said admixing and coagulating being effected in the absence of a polymerization initiator for the monomer with substantially no polymerization of said monomer and substantially no crosslinking of or grafting onto said elastomeric polymer.
Claim 10
Dependent Claim
24 words
The elastomer composition of claim 7 wherein the weight ratio of said monomer to said polymer is within the range of 2:5 to 1:2.
Claim 11
Dependent Claim
16 words
The elastomeric composition of claim 7 wherein said polymer is a copolymer of butadiene and acrylonitrile.
Claim 12
Dependent Claim
17 words
The elastomeric composition of claim 7 wherein said polymer is a carboxylated copolymer of butadiene and acrylonitrile.
Claim 13
Dependent Claim
21 words
The elastomeric composition of claim 9 or 10 wherein said monomer is an acrylic or methacrylic acid ester of a polyol.
Claim 14
Dependent Claim
89 words
A non-crosslinked elastomeric composition in the form of a homogeneous admixture consisting essentially of an elastomeric polymer and a polymerizable monomer, free of filler, and produced by admixing 0.5-200 parts by weight of said polymerizable monomer and 100 parts by weight, solids basis, of a latex of said elastomeric polymer, coagulating said latex and separating the coagulated solids to recover same as said elastomeric composition, said admixing and coagulating being effected with substantially no polymerization of said monomer and substantially no crosslinking of or grafting onto said elastomeric polymer.
Claim 15
Dependent Claim
89 words
A non-crosslinked elastomeric composition in the form of a homogeneous admixture consisting essentially of an elastomeric polymer and a polymerizable monomer, free of filler, and produced by admixing 0.5-200 parts by weight of said polymerizable monomer and 100 parts by weight, solids basis, of a latex of said elastomeric polymer, coagulating said latex and separating the coagulated solids to recover same as said elastomeric composition, said admixing and coagulating being effected with substantially no polymerization of said monomer and substantially no crosslinking of or grafting onto said elastomeric polymer.
Claim 16
Dependent Claim
13 words
The method of claim 1 wherein said polymerizable monomer is a polyfunctional monomer.
Claim 17
Dependent Claim
13 words
The method of claim 1 wherein said polymerizable monomer is a trifunctional monomer.
Claim 18
Dependent Claim
13 words
The composition of claim 7 wherein said polymerizable monomer is a polyfunctional monomer.
Claim 19
Dependent Claim
13 words
The composition of claim 15 wherein said polyfunctional monomer is a trifunctional monomer.
Claim 20
Dependent Claim
18 words
The process of claim 1 wherein said elastomeric polymer is of butadiene and acrylonitrile having terminal carboxyl groups.
Claim 21
Dependent Claim
26 words
A method according to claim 1 wherein at least 5 parts by weight of said monomer are added to said latex, thereby plasticizing the elastomeric composition.
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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) | 1987-11-27 | 1988-05-28 | 1988-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-27 | 1992-05-28 | 1992-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-27 | 1996-05-28 | 1996-11-27 | $7700.00 | Window Closed / Lapsed |