Composition of fluoroelastomer and diorganosulfuroxide

Claim 2

A curable fluoroelastomer composition consisting essentially of elastomeric co-polymer of vinylidene fluoride and terminally ethylenically unsaturated fluorinated comonomer, and for each hundred parts of said co-polymer: a. 0.2 to 5 parts diorganosulfur oxide, which contains two like or unlike aliphatic, cycloaliphatic or aromatic groups which are unsubstituted or substituted only with halogen; b. 0.1 to 5 parts quaternary phosphonium or ammonium compound; c. a total of 3 to 40 parts consisting of 0 to 25 parts acid acceptor, and 0 to 25 parts optional base; and d. 0.2 to 5 parts aromatic hydroxy or amino compound.

Claim 3

A curable fluoroelastomer composition according to claim 1 wherein the elastomeric copolymer comprises vinylidene fluoride and perfluoropropene.

Claim 4

A curable fluoroelastomer composition according to claim 1 wherein the diorganosulfur oxide is a diorganosulfoxide.

Claim 5

A curable fluoroelastomer composition according to claim 1 wherein the diorganosulfur oxide is diorganosulfone.

Claim 6

A curable fluoroelastomer composition according to claim 1 wherein the acid acceptor is magnesium oxide and the optional base is calcium hydroxide.

Claim 7

A curable fluoroelastomer composition according to claim 1 wherein the aromatic hydroxy compound is 2,2-bis-(p-hydroxyphenyl)hexafluoropropane.

Claim 8

A curable fluoroelastomer composition according to claim 1 wherein the diorganosulfur oxide is tetramethylene sulfone.

Claim 9

A curable fluoroelastomer composition according to claim 1 wherein the diorganosulfur oxide is tetramethylene sulfoxide.

Claim 10

A curable fluoroelastomer composition according to claim 1 wherein the diorganosulfur oxide is dimethylsulfone.

Claim 11

A curable fluoroelastomer composition according to claim 1 wherein the diorganosulfur oxide is dimethylsulfoxide.

Claim 12

A curable fluoroelastomer composition according to claim 1 wherein the diorganosulfur oxide is bis(p-chlorophenyl)sulfone.

Claim 13

A curable fluoroelastomer composition consisting essentially of elastomeric co-polymer of vinylidene fluoride and terminally ethylenically unsaturated fluorinated comonomer, and for each hundred parts of said copolymer: a. 0.2 to 5 parts diorganosulfur oxide, which contains two like or unlike aliphatic, cycloaliphatic or aromatic groups which are unsubstituted or can be substituted only with halogen, aliphatic hydroxyl, nitro, and cyano substituents; b. 0.1 to 5 parts quaternary phosphonium or ammonium compound; c. a total of 3 to 40 parts consisting of 0 to 25 parts acid acceptor, and 0 to 25 parts optional base; and d. 0.2 to 5 parts aromatic hydroxy or amino compound.

Claim 14

A curable fluoroelastomer composition consisting essentially of elastomeric co-polymer of vinylidene fluoride and terminally ethylenically unsaturated fluorinated comonomer, and for each hundred parts of said copolymer: a. 0.2 to 5 parts diorganosulfur oxide, which contains two like or unlike aliphatic, cycloaliphatic or aromatic groups which are unsubstituted or can be substituted only with halogen, aliphatic hydroxyl, nitro, and cyano substituents; b. 0.1 to 5 parts quaternary phosphonium or ammonium compound; c. a total of 3 to 40 parts consisting of 0 to 25 parts acid acceptor, and 0 to 25 parts optional base; and d. 0.2 to 5 parts aromatic hydroxy or amino compound.

Claim 15

A curable fluoroelastomer composition consisting essentially of elastomeric co-polymer of vinylidene and perfluoropropene, or co-polymer of vinylidene fluoride, perfluoropropene, and tetrafluoroethylene, and for each 100 parts of said copolymer: (a) 0.2 to 5 parts bis(p-chlorophenyl)sulfone; (b) 0.1 to 5 parts triphenyl benzyl phosphonium chloride; (c) a total of 3 to 40 parts consisting of 0 to 25 parts magnesium oxide, and 0 to 25 parts calcium hydroxide; and (d) 0.2 to 5 parts 2,2-bis(p-hydroxyphenyl)hexafluoropropane.

Claim 16

A curable fluoroelastomer composition consisting essentially of elastomeric co-polymer of vinylidene and perfluoropropene, or co-polymer of vinylidene fluoride, perfluoropropene, and tetrafluoroethylene, and for each 100 parts of said copolymer: (a) 0.2 to 5 parts bis(p-chlorophenyl)sulfone; (b) 0.1 to 5 parts triphenyl benzyl phosphonium chloride; (c) a total of 3 to 40 parts consisting of 0 to 25 parts magnesium oxide, and 0 to 25 parts calcium hydroxide; and (d) 0.2 to 5 parts 2,2-bis(p-hydroxyphenyl)hexafluoropropane.

Claim 17

A curable fluoroelastomer composition comprising an elastomeric copolymer of vinylidene fluoride and at least one terminally unsaturated fluoromonoolefin containing at least one fluorine atom substituent on each double-bonded carbon atom, each carbon atom of said fluoromonoolefin being substituted only with fluorine, chlorine, hydrogen or a lower fluoroalkyl or fluoroalkoxy radical, at least 10% of the chain carbon atoms of said copolymer being --CH 2 -- groups, and for each 100 parts of said copolymer: a. 0.2 to 5 parts diorganosulfur oxide, which contains two like or unlike aliphatic, cycloaliphatic or aromatic groups which are unsubstituted or substituted only with halogen; b. 0.1 to 5 parts quaternary phosphonium or ammonium compound; c. a total of 3 to 40 parts consisting of 0 to 25 parts acid acceptor, and 0 to 25 parts optional base; and d. 0.2 to 5 parts aromatic hydroxy or amino compound.

Claim 18

A curable fluoroelastomer composition comprising an elastomeric copolymer of vinylidene fluoride and at least one terminally unsaturated fluoromonoolefin containing at least one fluorine atom substituent on each double-bonded carbon atom, each carbon atom of said fluoromonoolefin being substituted only with fluorine, chlorine, hydrogen or a lower fluoroalkyl or fluoroalkoxy radical, at least 10% of the chain carbon atoms of said copolymer being --CH 2 -- groups, and for each 100 parts of said copolymer: a. 0.2 to 5 parts diorganosulfur oxide, which contains two like or unlike aliphatic, cycloaliphatic or aromatic groups which are unsubstituted or substituted only with halogen; b. 0.1 to 5 parts quaternary phosphonium or ammonium compound; c. a total of 3 to 40 parts consisting of 0 to 25 parts acid acceptor, and 0 to 25 parts optional base; and d. 0.2 to 5 parts aromatic hydroxy or amino compound.

Claim 19

A curable fluoroelastomer composition comprising an elastomeric copolymer of vinylidene fluoride and at least one terminally unsaturated fluoromonoolefin containing at least one fluorine atom substituent on each double-bonded carbon atom, each carbon atom of said fluoromonoolefin being substituted only with fluorine, chlorine, hydrogen or a lower fluoroalkyl or fluoroalkoxy radical, at least 10% of the chain carbon atoms of said copolymer being --CH 2 -- groups, and for each 100 parts of said copolymer: a. 0.2 to 5 parts diorganosulfur oxide, which contains two like or unlike aliphatic, cycloaliphatic or aromatic groups which are unsubstituted or can be substituted only with halogen, aliphatic hydroxyl, nitro, and cyano substituents; b. 0.1 to 5 parts quaternary phosphonium or ammonium compound; a total of 3 to 40 parts consisting of 0 to 25 parts acid acceptor, and 0 to 25 parts optional base; and d. 0.2 to 5 parts aromatic hydroxy or amino compound.

Claim 20

A curable fluoroelastomer composition comprising an elastomeric copolymer of vinylidene fluoride and at least one terminally unsaturated fluoromonoolefin containing at least one fluorine atom substituent on each double-bonded carbon atom, each carbon atom of said fluoromonoolefin being substituted only with fluorine, chlorine, hydrogen or a lower fluoroalkyl or fluoroalkoxy radical, at least 10% of the chain carbon atoms of said copolymer being --CH 2 -- groups, and for each 100 parts of said copolymer: a. 0.2 to 5 parts diorganosulfur oxide, which contains two like or unlike aliphatic, cycloaliphatic or aromatic groups which are unsubstituted or can be substituted only with halogen, aliphatic hydroxyl, nitro, and cyano substituents; b. 0.1 to 5 parts quaternary phosphonium or ammonium compound; a total of 3 to 40 parts consisting of 0 to 25 parts acid acceptor, and 0 to 25 parts optional base; and d. 0.2 to 5 parts aromatic hydroxy or amino compound.