US4595720A — Processing elastomers

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 .

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

Processing elastomers

Abstract

Inventors

Bibliographic Details

Claims Analysis

References Cited (Backward Citations)

USPTO Annuity & Maintenance Windows

Assigned Categories & Tags

Assign Category Tag