Compatibilization of polystyrene and PVC
AssigneeBorg-Warner Chemicals, Inc.
InventorJohn C. Falk
Life of this patent
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Abstract
Blends of PVC and polystyrene are made compatible by the addition of from 1 to 20 wt %, based on final composition, of a chlorinated styrene-butadiene block copolymer.
Claims3
A thermoplastic composition comprising from 99 to 80 wt % of a blend containing from 95 to 5 parts by weight polystyrene and from 5 to 95 parts by weight polyvinyl chloride and correspondingly from 1 to 20 wt % of a chlorinated styrene-butadiene block copolymer.
A method for the compatibilizing of thermoplastic blends comprising from 95 to 5 parts by weight of polystyrene and from 5 to 95 parts by weight of polyvinyl chloride consisting of incorporating therein from 1 to 20 wt %, based on final composition, of a chlorinated styrene-butadiene block copolymer.
Dependencies are inferred from the claim text.