Pressure-sensitive adhesive composition

Abstract

Abstract PURPOSE: To prepare the titled composition having excellently balanced tackiness, adhesivity, and cohesive strength, and suitable for adhesive cellophane tape, protective tape, etc., by compounding a rubber such as natural rubber, synthetic rubber, etc. to a specific hydrogenated resin used as a tackifier resin. CONSTITUTION: The objective composition is prepared by compounding (A) a hydrogenated resin having a softening point of 50W160°C and obtained by hydrogenating a resin prepared by the thermal copolymerization at 220W320°C of a mixture containing 10W70% of dicyclopentadiene which is a fraction obtained by distilling out vinyl norbornene from a reaction mixture containing said compound as a main product and obtained by the Diels-Alder reaction of 1,3-butadiene and cyclopentadiene, and 30W80% of tetrahydroindene and/or vinyl cyclohexane, and (B) a rubber selected from natural rubber and a synthetic rubber (e.g. styrenebutadiene copolymer rubber). The preferable amount of the component (A) is 30W150pts.wt. per 100pts.wt. of the component (B). COPYRIGHT: (C)1982,JPO&Japio

Inventors

• 👤 Shozo Tsuchiya
• 👤 Akio Oshima
• 👤 Hideo Hayashi

Bibliographic Details