Adhesive strapping tape

C - Chemistry – Metallurgy – 09 – J

Patent

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Details

C09J 7/02 (2006.01) C09J 153/02 (2006.01)

Patent

CA 2725990

The invention relates to an adhesive tape comprising a film carrier onto which an adhesive mass is applied on at least one side thereof, the adhesi-ve mass consisting of at least one block copolymer P1 comprising one or more terminal blocks consisting of vinyl aromatics and at least one block consisting of conjugated dienes, wherein the terminal double bonds, obtained by linkage in the 1,2 position, are hydrated to more than 80%, while the double bonds in the main chain, obtained by linkage in the 1,4 position, are hy-drated to less than 30%, and at least one block copoly-mer P2 comprising one ore more terminal blocks con-sisting of vinyl aromatics and at least one block consis-ting of conjugated dienes, wherein at least 95% of the double bonds are hydrated.

L'invention concerne une bande adhésive comportant un support composé d'une pellicule sur laquelle une masse adhésive est appliquée au moins unilatéralement. La masse adhésive est constituée d'au moins un copolymère séquencé (P1) dont au moins un bloc terminal est composé de vinylaromates et au moins un bloc est composé de diènes conjuguées, et les doubles liaisons terminales obtenues par combinaison 1,2 sont hydrogénées à plus de 80 % tandis que les doubles liaisons de la chaîne principale obtenues par combinaison 1,4 sont hydrogénées à moins de 30 %; et d'au moins un copolymère séquencé (P2) dont au moins un bloc terminal est composé de vinylaromates et au moins un bloc est composé de diènes conjuguées, et au moins 95 % des doubles liaisons sont hydrogénées.

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