Solvent-base self-adhesive resin and its preparation

Abstract

Abstract PURPOSE:To obtain the title resin which gives a coating film having excellent adhesiveness, weatherability, heat resistance, etc., and is suitable for, e.g., a self-adhesive tape, by combining two kinds of specified polymer block chains having different glass transition points. CONSTITUTION:An initiator having one or more dithiocarbamate groups of the formula (wherein R<1> and R<2> are each H or 1-10C alkyl) (e.g., n-butyl-N,N- dimethyldithiocarbamate) is used to polymerize a radical-polymerizable monovinyl monomer (e.g., ethyl acrylate or butyl acrylate), thus forming a non-rigid polymer block chain B having a glass transition point of 0 deg.C or lower. This polymer is then used as an initiator for polymerization of a radical- polymerizable monovinyl monomer (e.g., acrylic acid or styrene) to form a rigid polymer block chain A having a glass transition point of 30 deg.C or higher, thus giving an objective solvent-base self-adhesive resin.

Inventors

• 👤 Shunichi Himori

Bibliographic Details