Method for encapsulating an electronic arrangement

摘要

The present invention relates to a method for encapsulating an electronic arrangement against permeants, in which a pressure-sensitive adhesive composition based on vinylaromatic block copolymers is provided, and in which the pressure-sensitive adhesive composition is applied onto and/or around the regions of the electronic arrangement which are to be encapsulated.

主权项

1. Method for encapsulating an electronic arrangement against permeants, the method comprising:
providing a pressure-sensitive adhesive composition comprised of vinylaromatic block copolymers and at least one resin having a softening point of 100° C. or more, wherein the pressure-sensitive adhesive composition exhibits a combination of adhesive and cohesive properties such that the pressure-sensitive adhesive composition constantly exhibits permanent tack and flexibility, wherein the block copolymers contain polymer blocks formed by vinylaromatics, wherein the block copolymers contain polymer blocks formed by polymerization of 1,3-dienes that are partially, selectively or fully hydrogenated polymer blocks, wherein the at least one resin is a hydrogenated hydrocarbon resin having a degree of hydrogenation of at least 90%, a DACP value of more than 30° C. and a MMAP value of more than 50° C., and further wherein the pressure-sensitive adhesive composition has a WVTR of less than 100 g/m2·d; and applying the pressure-sensitive adhesive composition onto and/or around regions of the electronic arrangement that are to be encapsulated.