Pressure-Sensitive Adhesive Mass
AssigneeTesa SE
InventorsMarc Husemann, Thorsten Krawinkel, Daniel Klier
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Abstract
The present invention relates to the use of an adhesive mass at least containing an acid-anhydride-modified vinyl aromatic block copolymer, a metal chelate, and an adhesive resin for bonding optical components, particularly optical films, wherein the adhesive mass has a transmittance greater than 86% and a haze less than 5%.
Claims9
The use of an adhesive at least comprising an acid anhydride-modified vinylaromatic block copolymer, a metal chelate, and a tackifier resin, for the bonding of optical components, more particularly optical films,
- the adhesive having a transmittance of greater than 86% and a haze of less than 5%.
The use as claimed in any of the preceding claims, characterized in that the metal of the metal chelate is selected from main groups 2, 3, 4, and 5 of the Periodic Table and also the transition metals,
- preferably in that the metal of the metal chelate is aluminum.
The use as claimed in any of the preceding claims, characterized in that the acid anhydride-modified vinylaromatic block copolymer is a block copolymer formed of vinylaromatic (A blocks) and those formed by polymerization of 1,3-dienes (B blocks).
The use as claimed in any of the preceding claims, characterized in that the adhesive has a fraction of at least 20%, preferably of at least 30%, more preferably of at least 35% by weight of vinylaromatic block copolymer, and/or in that the same has a fraction of not more than 70%, preferably of not more than 60%, more preferably of not more than 55% by weight of vinylaromatic block copolymer.
The use as claimed in any of the preceding claims, characterized in that the fraction of acid anhydride is between 0.5% and 4% by weight, based on the overall block copolymer.
The use as claimed in any of the preceding claims, characterized in that the adhesive has a pH in the range from pH 6 to pH 8.
The use as claimed in any of the preceding claims, characterized in that the optical component is electrically conductive.
Dependencies are inferred from the claim text.