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US 2013/0158200 A1Published application
Polyhydroxy curable fluoroelastomer compositions
AssigneeE. I. Du Pont de Nemours and Company
InventorsDONALD F LYONS, Peter A. MORKEN
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Abstract
Disclosed herein is a curable composition comprising a polyhydroxy curable fluoroelastomer, a polyhydroxy curative, a cure accelerator and an unsaturated metal compound process aid. Such curable compositions have a lower Mooney viscosity than do similar compositions absent the process aid.
Claims15
A curable fluoroelastomer composition comprising:
- A) a polyhydroxy curable fluoroelastomer;
- B) a polyhydroxy curative;
- C) a cure accelerator;
- and
- D) an unsaturated metal compound process aid having the formula Y(4-n)MXn wherein Y is selected from alkyl, aryl, carboxylic acid, or alkyl ester groups;
- M is selected from Si, Ge, or Sn;
- X is an allyl group CR1R2CR3═CR4R5, vinyl group CR1═CR2R3, allenyl group CR1═C═CR2R3, alkynyl group C≡CR1, or propargyl group CR1R2C≡CR3;
- R1-R5 are selected independently from the group consisting of H, F, alkyl, aryl, heterocycle, or perfluoroalkyl groups;
- and n is 1,2, or 3.
6 more elements
Dependencies are inferred from the claim text.