ADHESIVE COMPOSITION COMPRISING BLOCK COPOLYMER WITH POLYVINYL AROMATIC ENDBLOCK AND POLY(VINYL AROMATIC/BUTADIENE) COPOLYMER BLOCK AND SIS BLOCK COPOLYMER, ARTICLES, AND METHODS
A pressure sensitive adhesive composition is described comprising a first block copolymer comprising polyvinyl aromatic end block and poly(vinyl aromatic/butadiene) copolymer block; at least 20 wt. % of a second polystyrene-polyisoprene-poly styrene block copolymer; and solid tackifying resin. The t...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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Zusammenfassung: | A pressure sensitive adhesive composition is described comprising a first block copolymer comprising polyvinyl aromatic end block and poly(vinyl aromatic/butadiene) copolymer block; at least 20 wt. % of a second polystyrene-polyisoprene-poly styrene block copolymer; and solid tackifying resin. The total amount of block copolymer typically ranges from 40-65 wt. % and plasticizing oil and liquid tackifying resin are present in a total amount of less than 20 wt.-% based on the total weight of organic components of the pressure sensitive adhesive composition. Also describe are adhesive articles and methods. |
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