Fluorine-containing elastomer and its composition

Details Fluorine-containing elastomer and its composition Fluorine-containing elastomer and its composition

2007-12-25

2007-12-25

Eyler, Yvonne (Department: 1621)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S255000

Reexamination Certificate

active

10674009

ABSTRACT:
A fluorine-containing elastomer having a copolymer composition, which comprises 50-85% by mole of (a) vinylidene fluoride, 0-25% by mole of (b) tetrafluoroethylene, 7-20% by mole of (c) perfluoro(methyl vinyl ether), 3-15% by mole of (d) CF2═CFO[CF2CF(CF3)O]nCF3and 0.1-2% by mole of (e) RfX, where Rf is an unsaturated fluorohydrocarbon group having 2-8 carbon atoms and X is a bromine or iodine atom, can give curing products with distinguished low-temperature characteristics and solvent resistance without deteriorating the distinguished moldability and compression set characteristics proper to the fluorine-containing elastomer, and a fluorine-containing elastomer composition, which comprises 100 parts by weight of the present fluorine-containing elastomer, 0.1-10 parts by weight of an organic peroxide, 0.1-10 parts by weight of a polyfunctional unsaturated compound and not less than 2 parts by weight of an acid acceptor can give curing products with distinguished low-temperature characteristics and fuel oil resistance.

REFERENCES:
patent: 4035565 (1977-07-01), Apotheker et al.
patent: 5969066 (1999-10-01), Enokida et al.
patent: 6734254 (2004-05-01), Worm et al.
patent: 58-4728 (1978-01-01), None
patent: 5-13961 (1986-10-01), None

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