US4595720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processing elastomers
Assignee: Dyneon LLC
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Filing: 1985-06-26
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Granted: 1986-06-17
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Expires: 2005-06-26
Abstract
Abstract The processing of elastomer gums, which can be natural rubber or synthetic elastomers such as copolymers of vinylidene fluoride and hexafluoropropylene, are improved by incorporating in said gum, along with conventional chemical and compounding ingredients, cyanuric acid or isocyanurate or cyanurate derivatives thereof to improve the processing of such gums, for example, to improve the extrudability thereof or the release of molded articles thereof from the mold.
Inventors
- 👤 David A. Stivers
- 👤 Richard A. Guenthner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:07
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3467; C08K5/3477; C08K5/3492; C08K5/34924
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
125 words
A composition comprising fluoroelastomer gum and as a processing aid therefor a composition comprising isocyanurate of the formula: ##STR11## where R 1 is an aliphatic radical or aryl radical, or combinations thereof, which radicals are unsubstituted or can contain hetero atoms, chlorine, or fluorine, not more than one of said radicals containing ethylenic unsaturation, and n is 0, 1, or 2, or cyanurate of the formula: ##STR12## where Z is O, S, or NR (where R is H or lower alkyl), R 2 is as defined above for R 1 , X is halogen, OH, O(M) 1/z (where M is a metal ion and z is the valence thereof), or NHR (where R is H or lower alkyl), and n is 0, 1, or 2.
Claim 2
Dependent Claim
125 words
A composition comprising fluoroelastomer gum and as a processing aid therefor a composition comprising isocyanurate of the formula: ##STR11## where R 1 is an aliphatic radical or aryl radical, or combinations thereof, which radicals are unsubstituted or can contain hetero atoms, chlorine, or fluorine, not more than one of said radicals containing ethylenic unsaturation, and n is 0, 1, or 2, or cyanurate of the formula: ##STR12## where Z is O, S, or NR (where R is H or lower alkyl), R 2 is as defined above for R 1 , X is halogen, OH, O(M) 1/z (where M is a metal ion and z is the valence thereof), or NHR (where R is H or lower alkyl), and n is 0, 1, or 2.
Claim 3
Dependent Claim
44 words
The composition according to claim 1 wherein said fluoroelastomer gum comprises copolymers of two or more of vinylidene fluoride, hexafluoropropene, chlorotrifluoroethylene, 2-chloropentafluoropropene, fluorinated methyl vinyl ether, tetrafluoroethylene, 1-hydropentafluoropropene, dichlorodifluoroethylene, trifluoroethylene, and 1,1-chlorofluoroethylene, and in addition 3-iodoperfluoropropene, 4-iodoperfluoropentene, bromotrifluoroethylene, bromodifluoroethylene, or bromotetrafluorobutene, and mixtures thereof.
Claim 4
Dependent Claim
56 words
The composition according to claim 1 wherein said fluoroelastomer gum is a copolymer of vinylidene fluoride with at least one terminally unsaturated fluoromonomer containing at least one fluorine atom substituent on each double-bonded carbon atom, each carbon atom of said fluoromonomer being substituted only with fluorine and chlorine, hydrogen, lower fluoroalkyl radical, or lower fluoroalkoxy radical.
Claim 5
Dependent Claim
18 words
The composition of claim 1 wherein said fluoroelastomer gum is a copolymer of vinylidene fluoride, hexafluoropropylene, and tetrafluoroethylene.
Claim 6
Dependent Claim
74 words
The composition of claim 1 wherein said processing aid has a structure represented by the formula ##STR13## where R is selected from the group consisting of OC 18 H 37 , N(CH 3 )SO 2 C 8 F 17 , OC 2 H 4 O(C 2 H 4 O) 6 CH 3 , (OC 2 H 4 ) 3 N(C 2 H 5 )SO 2 C 8 F 17 , Cl, OH, and ONa.
Claim 7
Dependent Claim
32 words
The composition of claim 5 wherein said gum comprises a copolymer of vinylidene fluoride, hexafluoropropene, and tetrafluoroethylene, and R in the formula for said processing aid is OC 18 H 37 .
Claim 8
Dependent Claim
44 words
The composition of claim 5 wherein said gum comprises a copolymer of vinylidene fluoride, hexafluoropropene, and tetrafluoroethylene, and R in the formula for said processing aid is (OC 2 H 4 ) 3 N(C 2 H 5 )SO 2 C 8 F 17 .
Claim 9
Dependent Claim
55 words
The composition of claim 1 wherein said processing aid has a structure represented by the formula ##STR14## where R is selected from the group consisting of H, C 2 H 5 , C 18 H 37 , CH 2 C 6 H 5 , CH 3 , and C 2 H 4 OPO(OH) 2 .
Claim 10
Dependent Claim
40 words
The composition of claim 8 wherein said gum comprises a copolymer of vinylidene fluoride, hexafluoropropene, and tetrafluoroethylene, and in the formula for said processing aid one R is H and the other two R's are C 2 H 5 .
Claim 11
Dependent Claim
40 words
The composition of claim 8 wherein said gum comprises a copolymer of vinylidene fluoride, hexafluoropropene, and tetrafluoroethylene, and in the formula for said processing aid one R is H and the other two R's are C 18 H 37 .
Claim 12
Dependent Claim
43 words
The composition of claim 8 wherein said gum comprises a copolymer of vinylidene fluoride, hexafluoropropene, bromotrifluoroethylene or bromodifluoroethylene, and tetrafluoroethylene, and in the formula for said processing aid one R is H and the other two R's are C 2 H 5 .
Claim 13
Dependent Claim
17 words
The composition of claim 1 wherein said processing aid has a structure represented by the formula: ##STR15##
Claim 14
Dependent Claim
136 words
In the processing of an fluoroelastomer gum, the improvement comprising incorporating in said gum as a processing aid therefor a composition comprising cyanuric acid or isocyanurate of the formula: ##STR16## where R 1 is an aliphatic radical or aryl radical, or combinations thereof, which radicals are unsubstituted or can contain hetero atoms, chlorine, or fluorine, not more than one of said radicals containing ethylenic unsaturation, and n is 0, 1, or 2, or cyanurate of the formula: ##STR17## where Z is O, S, or NR (where R is H or lower alkyl), R 2 is as defined above for R 1 , X is halogen, OH, O(M) 1/z (where M is a metal ion and z is the valence thereof), or NHR (where R is H or lower alkyl), and n is 0, 1, or 2.
Claim 15
Dependent Claim
136 words
In the processing of an fluoroelastomer gum, the improvement comprising incorporating in said gum as a processing aid therefor a composition comprising cyanuric acid or isocyanurate of the formula: ##STR16## where R 1 is an aliphatic radical or aryl radical, or combinations thereof, which radicals are unsubstituted or can contain hetero atoms, chlorine, or fluorine, not more than one of said radicals containing ethylenic unsaturation, and n is 0, 1, or 2, or cyanurate of the formula: ##STR17## where Z is O, S, or NR (where R is H or lower alkyl), R 2 is as defined above for R 1 , X is halogen, OH, O(M) 1/z (where M is a metal ion and z is the valence thereof), or NHR (where R is H or lower alkyl), and n is 0, 1, or 2.
Claim 16
Dependent Claim
32 words
The composition according to claim 1 wherein said fluoroelastomer gum comprises copolymers of two or more of vinylidene fluoride, hexafluoropropene, chlorotrifluoroethylene, 2-chloropentafluoropropene, fluorinated methyl vinyl ether, tetrafluoroethylene, 1-hydropentafluoropropene, dichlorodifluoroethylene, trifluoroethylene, and 1,1-chlorofluoroethylene.
Claim 17
Dependent Claim
46 words
The composition according to claim 1 wherein said fluoroelastomer gum is a copolymer of vinylidene fluoride with at least one terminally unsaturated fluoromonomer containing at least one fluorine atom substituent on each double-bonded carbon atom, each carbon atom of said fluoromonomer being substituted only with fluorine.
Claim 18
Dependent Claim
17 words
The composition of claim 1 wherein said fluoroelastomer gum is a copolymer of vinylidene fluoride and hexafluoropropylene.
Claim 19
Dependent Claim
31 words
The composition of claim 5 wherein said gum comprises a copolymer of vinylidene fluoride and hexafluoropropene, and R in the formula for said processing aid is OC 18 H 37 .
Claim 20
Dependent Claim
43 words
The composition of claim 5 wherein said gum comprises a copolymer of vinylidene fluoride and hexafluoropropene, and R in the formula for said processing aid is (OC 2 H 4 ) 3 N(C 2 H 5 )SO 2 C 8 F 17 .
Claim 21
Dependent Claim
39 words
The composition of claim 8 wherein said gum comprises a copolymer of vinylidene fluoride and hexafluoropropene, and in the formula for said processing aid one R is H and the other two R's are C 2 H 5 .
Claim 22
Dependent Claim
39 words
The composition of claim 8 wherein said gum comprises a copolymer of vinylidene fluoride and hexafluoropropene, and in the formula for said processing aid one R is H and the other two R's are C 18 H 37 .
Claim 23
Dependent Claim
42 words
The composition of claim 8 wherein said gum comprises a copolymer of vinylidene fluoride, hexafluoropropene, and bromotrifluoroethylene or bromodifluoroethylene, and in the formula for said processing aid one R is H and the other two R's are C 2 H 5 .
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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) | 1989-06-16 | 1989-12-16 | 1990-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-16 | 1993-12-16 | 1994-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-16 | 1997-12-16 | 1998-06-17 | $7700.00 | Window Closed / Lapsed |