Composition of fluoroelastomer and diorganosulfuroxide
AssigneeMinnesota Mining and Manufacturing Company
InventorRobert E. Kolb
Life of this patent
Estimating the term…
Abstract
A diorgano sulfur oxide is included in a curable vinylidene fluoride elastomer formulation to provide desirable curing characteristics.
Claims15
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.
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.
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.
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.sub.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.
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.sub.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.
Dependencies are inferred from the claim text.