| http://www.w3.org/ns/prov#value | - Patent US4408019 - Block copolymers of ethylene and propylene - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More ??Sign inAdvanced Patent SearchPatentsThermoplastic elastomeric block copolymers having the general formula (AB)n A, wherein each A is a crystalline polypropylene block, each B is a random ethylene-propylene copolymer block and n is an integer from 1 to about 12 exhib
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