Pressure-sensitive adhesive compositon

Abstract

Abstract PURPOSE:To provide the titled composition having excellent tack (initial tackiness) and heat-resistance (cohesivity) and containing a polymer obtained by polymerizing a vinyl monomer in the presence of a rubber component and a specific amount of a vinyl monomer containing a hydrolyzable group. CONSTITUTION:A rubber component such as natural rubber, SBR, etc. is dissolved in a solvent, and a radical polymerization initiator is added to the solution. A vinyl monomer composition obtained by mixing a vinyl monomer [preferably (meth)acrylate of a 1-20C alcohol] with 0.1-50mol% (preferably 1- 20mol%) other vinyl monomer having hydrolyzable Si-containing group (preferably the number of Si atoms is 1-10, e.g. the compound of formula I , II, etc.) is added to the above solution at a weight ratio (rubber component/vinyl monomer) of 30/1-1/30, and the mixture is polymerized under heating. The obtained polymer is used as a component of the objective composition.

Inventors

• 👤 Toshibumi Hirose
• 👤 広瀬　俊文
• 👤 Katsuhiko Isayama
• 👤 諌山　克彦

Bibliographic Details