| abstract |
The invention relates to a pressure-sensitive adhesive. Provision is made for this pressure-sensitive adhesive to comprise n (a) a first layer of a first polyacrylate pressure-sensitive adhesive containing at least 50% by weight, based on the first polyacrylate pressure-sensitive adhesive, of an acrylic and/or methacrylic ester of the formula CH 2 ═CH(R 1 )(COOR 2 ); (b) a second layer comprising n (b1) a polyacrylate containing at least 50% by weight, based on the polyacrylate, of an acrylic and/or methacrylic ester of the formula CH 2 ═CH(R 1 )(COOR 2 , and (b2) at least 15% by weight, based on the second layer, of chalk; and n (c) a third layer of a second polyacrylate pressure-sensitive adhesive containing at least 50% by weight, based on the second polyacrylate pressure-sensitive adhesive, of an acrylic and/or methacrylic ester of the formula CH 2 ═CH(R 1 )(COOR 2 ) n nin each formula R 1 is H or CH 3 and R 2 is an alkyl chain having 1 to 20 carbon atoms. |