Pressure-sensitive adhesive and surface protecting material

C - Chemistry – Metallurgy – 09 – J

Patent

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Details

C09J 123/20 (2006.01) C08K 5/05 (2006.01) C08K 5/09 (2006.01) C08K 5/14 (2006.01) C09J 123/22 (2006.01) C09J 123/26 (2006.01)

Patent

CA 2267130

A pressure-sensitive adhesive comprising 100 parts by weight of an isobutylene polymer having been masticated in an organic solvent with a radical generator and 0.001 to 5 parts by weight of at least one release control agent selected from the group consisting of an alcohol having a molecular weight of 90 to 300 and an oxygen atom content of 8.5% or more or a derivative thereof and a carboxylic acid having a molecular weight of 70 to 400 and an oxygen atom content of 11% or more or a derivative thereof; and a surface protecting material having a pressure-sensitive adhesive layer comprising the adhesive. The adhesive has well-balanced characteristics in initial adhesion, retention of initial adhesion, and weather resistance.

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