Blends containing polystyrene-polyisoprene-polystyrene block copolymers and articles thereof
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United States of America Patent
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Oct 25, 1994
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app pub date -
Dec 17, 1993
filing date -
Aug 11, 1989
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Abstract
Blends of low styrene content polystyrene-polyisoprene-polystyrene block copolymer and high styrene content polystyrene-polyisoprene-polystyrene block copolymer can be used with tackifier resins, plasticizer oil and antioxidants to formulate pressure sensitive adhesives of improved cohesive strength vis-a-vis adhesives formed from the low styrene content polystyrene-polyisoprene-polystyrene block copolymer while maintaining good balance between tack, bonding characteristics and heat resistance.
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