polìmero de poli(estireno-butadieno-estireno), e, composição adesiva termorreversìvel
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 a...
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Main Authors | , , |
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Format | Patent |
Language | Portuguese |
Published |
10.07.2012
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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 20-45 %. 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: BR20030308687 |