POLY (STYRENE-BUTADIENE-STYRENE) POLYMERS HAVING A HIGH VINYL CONTENT IN THE BUTADIENE BLOCK AND HOT MELT ADHESIVE COMPOSITIONS COMPRISING SAID POLYMERS
The present invention concerns a poly(styrene-butadiene-styrene) polymer having a high vinyl content in the butadiene block comprising in combination a polystyrene content (PSC) within a range of 15-20 % by weight, a coupling efficiency (CE) of 50-80%, a step I molecular weight (MW) between 9,000 an...
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Main Authors | , , |
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Format | Patent |
Language | English French German |
Published |
22.12.2004
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Edition | 7 |
Subjects | |
Online Access | Get full text |
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Summary: | The present invention concerns a poly(styrene-butadiene-styrene) polymer having a high vinyl content in the butadiene block comprising in combination a polystyrene content (PSC) within a range of 15-20 % by weight, a coupling efficiency (CE) of 50-80%, a step I molecular weight (MW) between 9,000 and 10,000 kg/mol, and a vinyl content between 2045%. Hot melt adhesive compositions are also described comprising said SBS polymer together with a tackifying resin, a plasticizer and an anti-oxidant. |
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Bibliography: | Application Number: EP20030724933 |