ABSTRACT
The strength and stiffness of the block copolymer depend on the chemical nature of the segments and the mutual interaction. Block copolymers having the same styrene content, about the same block molecular weight, but different types of midblock display different. The chemical composition of the whole pressure-sensitive construction-polymer carrier and macromolecular adhesive. The main part of pressure-sensitive adhesive (PSA) formulation is based on the principle. PSAs based on natural or synthetic elastomers are tackified formulations multicomponent systems. The development of soft and elastic polymer coatings opened up new directions in the synthesis of elastomers. Particular needs exist for PSAs with good aging characteristics, with broader specific adhesion, higher cohesion and heat resistance, adherend independent removability, and reduced plasticizer-induced performance losses when used on flexible polyvinyl chloride face stock materials or special substrates. Blending with tackifier emulsions allows the development of products with specific adhesive performance characteristics, although adhesion on polyolefin substrates offers potential for improvement.
