Thermoplastic fluoroelastomers produced by graft copolymerization

U.S. Patent Number: 5385981

Abstract: Thermoplastic fluoroelastomer graft polymers formed from a fluorine-containing graft polymer formed from a rubber like (Tg<0.degree. C.), uncrosslinked fluorine-containing copolymer containing double bonds as the graft base onto which is grafted a fluorine-containing monomer that gives an at least partly crystalline polymer are produced from the rubber-like uncrosslinked copolymer by radical polymerization in solution, suspension or emulsion under elevated pressure at about -15.degree. to +120.degree. C., and grafting thereon a monomer which forms an at least partly crystalline polymer the grafting onto the rubber-like copolymer taking place by radical solution, suspension or emulsion graft polymerization under elevated pressure at about -15.degree. to +120.degree. C.

Inventors: Kruger; Ralf (Bergisch Gladbach, DE), Harrison; David B. (Cologne, DE), Morbitzer; Leo (Cologne, DE)

Assignee: Bayer Aktiengesellschaft (Leverkusen, DE)

Application Number: 08/095,458

Issued: 1995-01-31

Expired: 2007-01-31

Classes: 525/276 ; 525/281

Field of search: 525/276,281

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