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US 11,174,330 B2Granted
Curable fluoroelastomer composition
AssigneeDuPont Polymers, Inc.
InventorsAmiya Ratan Tripathy, Peter A Morken, Christopher J. Bish
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Abstract
Fluoroelastomer compositions comprising fluoroelastomers having copolymerized units of a nitrile-containing cure site monomer are cured with certain hydrazone or oxime curatives.
Claims12
A curable composition comprising:
- A) a fluoroelastomer comprising copolymerized units of vinylidene fluoride or tetrafluoroethylene;
- and copolymerized units of a nitrile group-containing cure site monomer;
- and
- B) a hydrazone or oxime of the general formula R1(C═NY)nR2 wherein n=1 or 2, Y=OH, or NH2, R1 is aryl, alkyl, perfluoroalkyl, benzyl or heterocyclic and R2 is aryl or heterocyclic.
1 more element
A curable composition consisting of:
- A) a fluoroelastomer comprising
- copolymerized units of vinylidene fluoride or tetrafluoroethylene;
- and
- copolymerized units of a nitrile group-containing cure site monomer;
- and
- B) a hydrazone of the general formula R1(C═NNH2)nR2 wherein n=1 or 2, and R1 is aryl, alkyl, perfluoroalkyl, or heterocyclic and R2 is aryl or heterocyclic.
3 more elements
Dependencies are inferred from the claim text.