ADHESIVE COMPOSITION FOR REMOVABLE PRESSURE SENSITIVE ADHESIVE LABEL

摘要

Disclosed is a hot-melt pressure-sensitive adhesive (HMPSA) composition comprising: a) 25 to 50% of a blend of styrene block copolymers consisting of 20 to 90% of one or more SBS (styrene/butadiene/styrene) triblock copolymers and 10 to 80% of one or more SB (styrene/butadiene) diblock copolymers, the overall content of styrene units of said blend being between 15 and 40%; b) 45 to 75% of one or more compatible tackifying resins having a softening temperature of between 80 and 150°C; and c) 0.5 to 5.5% of one or more fatty acids, the hydrocarbon chain of which comprises 10 to 22 carbon atoms, in acid form or in the form of a salt of an alkali or alkaline-earth metal.