Cohesively failing hot melt pressure sensitive adhesive

Details Cohesively failing hot melt pressure sensitive adhesive Cohesively failing hot melt pressure sensitive adhesive

1996-07-03

1998-04-21

Szekely, Peter A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524274, 524474, 524485, 524486, 524490, 524491, 524505, 524484, 525 98, 525 99, C08L 9304, C08L 5300, C08K 501

Patent

active

057418403

ABSTRACT:
A hot melt pressure sensitive adhesive comprising a) from about 15% to about 30% by weight of a linear styrene-ethylene/butylene-styrene copolymer having a styrene content from about 15% to about 35% by weight and a coupling efficiency of less than about 75%; b) from about 20% to about 50% by weight of a tackifying resin selected from the group consisting of those tackifying resins having a softening point of less than about 100.degree. C.; c) from about 30% to about 50% by weight of a plasticizing oil; and d) up to about 15% of a compatible polymer wherein the total polymer content does not exceed 30% by weight of the adhesive wherein the hot melt pressure sensitive adhesive fails cohesively during use.

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