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US 2014/0155532 A1Published application
Cured perfluoroelastomer article
AssigneeE. I. Du Pont de Nemours and Company
InventorSHUHONG WANG
Life of this patent
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Abstract
Cured perfluoroelastomers that contain high levels (i.e. greater than 50 phr) BaSO4 exhibit good thermal sealing performance such as reduced sticking and reduced tendency for splitting.
Claims4
A cured perfluoroelastomer article comprising
- A) a perfluoroelastomer comprising copolymerized units of i) 15 to 60 mole percent perfluoro(alkyl vinyl ether), ii) 0.1 to 5 mole percent of a cure site monomer and the remaining copolymerized units being of iii) tetrafluoroethylene so that total mole percent is 100;
- and
- B) greater than 50 parts by weight, per hundred parts by weight perfluoroelastomer, of BaSO4.
Dependencies are inferred from the claim text.