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US 12,709,658 B2Granted
Curing agents for fluoroelastomers
AssigneeKalrez USA, LLC
InventorsMichael W. Cobb, Anilkumar Raghavanpillai, Shuhong Wang
Life of this patent
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Abstract
Provided herein are curable fluoroelastomer compounds comprising a fluoroelastomer and a curing agent. The curing agent comprises an amidocarboxylic acid and an amidine-containing molecule or a salt that is the product of a reaction between an amidocarboxylic acid and an amidine-containing molecule. Further provided are articles comprising the curable fluoroelastomer compounds or a product of curing the fluoroelastomer compounds; processes for curing the compounds; and processes for making the articles.
Claims20
A compound comprising:
- (A) one or more fluoroelastomers comprising copolymerized units of:
- (1) one or more fluorinated olefins;
- (2) one or more olefin co-monomers different from the one or more fluorinated olefins (1) and selected from the group consisting of fluorovinyl ethers, hydrocarbon olefins, and combinations of two or more fluorovinyl ethers or hydrocarbon olefins;
- and
- (3) one or more cure site monomers selected from the group consisting of nitrile-containing fluorinated olefins and nitrile-containing fluorinated vinyl ethers;
- and
- (B) a curing agent comprising an amidocarboxylic acid and an amidine-containing molecule, or an amidocarboxylic acid salt of an amidine-containing molecule.
4 more elements
A process comprising the step of:
- curing a fluoroelastomer with at least one curing agent, said curing agent comprising an amidocarboxylic acid and an amidine-containing molecule, or an amidocarboxylic acid salt of an amidine-containing molecule.
Dependencies are inferred from the claim text.