Ineos Styrolution Group Gmbh

Michael Hamilton

Norbert Niessner

Konrad Knoll

Thomas W Cochran

Eike Jahnke

Michiel Verswyvel

Andrea Colombo

Bernd Elbert

The present invention relates to a polymer composition comprising at least one block copolymer and a specific amount of at least one oil component. The block copolymer, which is the polymeric matrix of the inventive composition, is built up from at least one vinyl aromatic monomer Mand at least one conjugated diene monomer M, in particular the block copolymer is a styrene butadiene block copolymer (SBC).

Polymer composition comprising at least one vinyl aromatic diene block copolymer and specific amounts of oil

Polymer blend comprising 95 to 100% of a component A) and 0 to 5% of additives, where A) is consisting of polymers A1) to A4): A1) 50 to 75% of a star shaped block copolymer A1 which comprises at least 2 terminal vinylaromatic hard blocks S and diene soft blocks B, where the proportion of the hard blocks S is from 65 to 90%, and Mn of block S is 35000 to 200000; A2) 5 to 15% of block copolymer A2 which comprises 2 terminal vinylaromatic hard blocks S1 and S2 and random copolymer blocks (B/S) consisting of 20 to 60% vinylaromatic monomers, and 80 to 40% dienes where the proportion of blocks S1 and S2 is 40 to 60%; and Mn of blocks S1 is 35000 to 200000, and Mn of blocks S2 is 5000 to 30000 and the molar S1/S2 ratio is 1:0.5 to 1:10; A3) 3 to 10% of an block copolymer A3 built up from vinylaromatic hard blocks S and from random soft blocks B/S consisting of 60 to 30% vinylaromatic monomers and 40 to 70% dienes, where the diene content is less than 50% and the proportion of the soft phase is at least 60%; and A4) 10 to 35% polystyrene A4; whereby the ratio of A1) to A2) to A3) is from 7 : [1.2 to 1.9] : [0.5 to 12], have particular mechanical properties.

Blends of styrene-butadiene copolymers

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.

Blends of styrene butadiene copolymers with poly(lactic acid)

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Brownstown, MI, United States of America

Michael Hamilton