THERMOPLASTIC VULCANIZATES OF OLEFIN RUBBER AND POLYOLEFIN RESIN

摘要

The invention provides compositions comprising blends of polyolefin resin and monoolefin copolymer rubber characterized by the rubber being fully cured, but the blends nevertheless being processable as thermoplastic and having improved physical properties as compared to uncured or partially cured blends; the blends comprise from about 35-95 parts by weight of resin and between 75-5 parts by weight rubber. The invention also provides a method for preparing the compositions. The improved products are all processable in an internal mixer to products which upon transferring at temperatures above the softening or crystallizing points of the resin phases to the rotating mills of a rubber mill, form continuous sheets.