The B. F. Goodrich Company

Frank H Howard

Changkiu K Riew

Eugene H Rowe

Improved molding composition comprising (1) polyvinyl chloride, which is blended with a dehydrochlorinating agent such as a stannous salt; (2) a free-radically polymerizable monomer and/or macromer, wherein the monomer contains at least one terminal CH.sub.2 .dbd.C&lt; group per molecule and the macromer contains at least one double bond in the polymeric backbone; (3) an ionically polymerizable monomer and/or macromer containing the oxirane group ##STR1## with an optional curing agent; (4) a heterofunctional monomer containing at least one oxirane group and at least one CH.sub.2 .dbd.C&lt; group per molecule; and (5) a free radical initiator results in an improvement in thermo-mechanical properties.

Molding compositions of polyvinyl chloride and polymerizable plasticizers

Unsaturated polyester resins are rendered less brittle without deteriorating other properties thereof by mixing therewith 0.1 to 20 parts of a vinyl terminated reactive liquid polymer per 100 parts of the polyester resin.

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Akron, OH, United States of America

Frank H Howard