US Patent 7585916 Block copolymer compositions

Patent 7585916 was granted and assigned to Kraton (polymer) on September, 2009 by the United States Patent and Trademark Office.

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Patent Inventor Names

Carl L. Willis0

Dale L. Handlin, Jr.0

Kathryn J. Wright0

Norio Masuko0

Robert C. Bening0

Tomomi Nishi0

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Patent abstract

The present invention relates to novel compositions comprising (a) anionic block copolymers of mono alkenyl arenes and conjugated dienes where one of the blocks is a controlled distribution copolymer of a conjugated diene and mono alkenyl arene having a specific arrangement of the monomers in the copolymer block, and (b) tailored softening modifiers have a particular structure that results in a surprising improvement in properties for the composition. Also included are processes for the manufacturing such novel compositions and various end-uses and applications for such compositions.

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Official Website

https://pdfpiw.uspto.gov/.piw?Docid=075859160

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