Back to results
US 2012/0259054 A1Published application
Heat resistant fluoroelastomer bushings
AssigneeE.I. du Pont de Nemours and Company
InventorSHUICHI OKUTSU
Life of this patent
Estimating the term…
Abstract
A cured fluoroelastomer sensor bushing comprises A) fluoroelastomer having at least 53 wt. % fluorine, and B) 10 to 50 parts by weight, per hundred parts by weight fluoroelastomer, of carbon black a nitrogen adsorption specific surface area of 70-150 m2/g and a dibutyl phthalate absorption of 90-180 ml/100 g.
Claims6
A cured fluoroelastomer sensor bushing comprising:
- (A) fluoroelastomer having at least 53 weight percent fluorine, said fluoroelastomer comprising copolymerized units of vinylidene fluoride and at least one copolymerizable monomer;
- (B) 10 to 50 parts by weight, per hundred parts by weight fluoroelastomer, of carbon black having a nitrogen adsorption specific surface area of 70-150 m2/g and a dibutyl phthalate absorption of 90-180 ml/100 g;
- (C) 0.8 to 2 parts by weight, per hundred parts by weight fluoroelastomer, of a polyol curative;
- and
- (D) 0.2 to 1 parts by weight, per hundred parts by weight fluoroelastomer, of a cure accelerator.
2 more elements
A cured fluoroelastomer sensor bushing comprising:
- (A) fluoroelastomer having at least 53 weight percent fluorine, said fluoroelastomer comprising copolymerized units of vinylidene fluoride and at least one copolymerizable monomer;
- (B) 10 to 50 parts by weight, per hundred parts by weight fluoroelastomer, of carbon black having a nitrogen adsorption specific surface area of 70-150 m2/g and a dibutyl phthalate absorption of 90-180 ml/100 g;
- (C) 0.2 to 2 parts by weight, per hundred parts by weight fluoroelastomer, of organic peroxide;
- and
- (D) 0.3 to 1.5 parts by weight, per hundred parts by weight fluoroelastomer, of a multifunctional coagent.
2 more elements
Dependencies are inferred from the claim text.