Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1988-11-14
1991-09-03
Marquis, Melvyn I.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525 63, 525 67, 525 68, 525 72, 525100, 525104, 525105, 525421, 525439, 525440, 525445, 525464, 525474, 525479, C08L 5108
Patent
active
050455958
ABSTRACT:
A multi-stage polyorganosiloxane/polyvinyl-based graft polymer is provided by the co-homopolymerization of a silicone polymer and a polyvinyl polymer (e.g. polystyrene) and the subsequent graft polymerization of one or more stages of additional vinyl-type polymers. When the isolated multi-stage graft polymers are combined with thermoplastic resins and are molded, impact strength, weld line strength and thermal stability are markedly improved with no tendency to delaminate.
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D. Graiver et al., Rubber Chem. Tech., 56(5), 918(1983).
Dean, Jr. Ralph
General Electric Company
Marquis Melvyn I.
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