Abstract: This invention relates to an improved method for forming a grafted rubbery particle suitable for use as a reinforcing rubber in a thermoplastic resin. The grafted rubbery particles produced by the method of the present invention have a substantially continuous, generally uniform layer of polymer grafted to the rubber particle core.
Type:
Grant
Filed:
November 30, 1984
Date of Patent:
July 22, 1986
Assignee:
The Dow Chemical Company
Inventors:
Eugene R. Moore, Maxmilian J. deFreitas
Abstract: Impact-resistant transparent polymeric compositions are prepared comprising particulate diene-monovinylidene aromatic block copolymer elastomer dispersed in a matrix comprising polymerized monovinylidene aromatic and acrylate monomers. These compositions can be advantageously prepared by adding the elastomeric block copolymer to an agitated polymerization system at a point where the elastomer will become dispersed as particles immediately or nearly immediately after addition.
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