TEMPERATURE SENSITIVE ADHESIVE AND TEMPERATURE SENSITIVE ADHESIVE TAPE

摘要

PROBLEM TO BE SOLVED: To provide a temperature sensitive adhesive and a temperature sensitive adhesive tape which can be used in at least two different steps of different atmosphere temperatures above and below the melting point of the temperature sensitive adhesive. SOLUTION: The temperature sensitive adhesive includes a polymer blend of a side-chain crystalline polymer (A) composed of a polymer of 40-100 pts.wt. of a (meth)acrylate having a≥14C linear alkyl group and 0-60 pts.wt. of a monomer copolymerizable with the (meth)acrylate; and a side-chain crystalline polymer (B) composed of a polymer of 40-100 pts.wt. of a (meth)acrylate selected from the (meth)acrylate used for the side-chain crystalline polymer (A) and having a linear alkyl group which has the carbon number which is different from that of the (meth)acrylate used for the side-chain crystalline polymer (A) by four or more and 0-60 pts.wt. of a monomer copolymerizable with the (meth)acrylate used for the side-chain crystalline polymer (B). The temperature sensitive adhesive tape has an adhesive layer containing the temperature sensitive adhesive on one side or both sides of a base film. COPYRIGHT: (C)2011,JPO&INPIT