Impact modified styrenic polymers with improved environmental stress crack resistance properties

    公开(公告)号:US10550260B2

    公开(公告)日:2020-02-04

    申请号:US15558293

    申请日:2016-03-17

    Abstract: Polymer blends comprising components A), B) and C): A) 80 to 96% by weight of an impact modified styrenic polymer A), B) 1 to 7% by weight of a polymer blend B) comprising B1) 25 to 75% by weight of polyisobutylene and B2) 25 to 75% by weight of a polyolefin, C) 3 to 13% by weight of an elastomeric block copolymer C) of structure (A-(B/A))n-A, where A is a vinylaromatic block, (B/A) is a random copolymer block of vinylaromatic monomer and diene, and n is 1 to 10, exhibit improved environmental stress crack resistance properties in presence of hydrofluoro olefins.

    Blends of styrene butadiene copolymers with poly(lactic acid)

    公开(公告)号:US09850377B2

    公开(公告)日:2017-12-26

    申请号:US15035692

    申请日:2014-11-11

    CPC classification number: C08L67/04 C08F297/046 C08L53/02

    Abstract: The present invention relates to a polymer blend comprising 75-99.5% (w/w) of at least one polylactic acid) (PLA) and 0.5-25% (w/w) of at least one styrene butadiene copolymer containing at least 50% (w/w) styrene. The present invention further relates to the use of such polymer blend for producing products and to the resulting products. Moreover, an object of the present invention is the use of a styrene butadiene block copolymer having a dendrimer structure comprising 50-85% (w/w) styrene as an additive of polymer blends comprising at least 50% (w/w) of PLA and a method of producing the polymer blend according to the invention.

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