Additive composition and method for increasing the upper service

Details Additive composition and method for increasing the upper service Additive composition and method for increasing the upper service

1996-09-17

1998-08-04

Jagannathan, Vasu

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...

524504, 524505, 525 67, 525 70, 525 71, 525 89, 525 94, 525148, C08L 4500, C08L 7112

Patent

active

057894744

ABSTRACT:
The specification discloses an additive composition for use in preparing adhesive formulations, particularly hot melt adhesive formulations based on A-B-A block copolymers which exhibit increased upper service temperatures. The additive composition comprises a preblend of of an A-block compatible reinforcing resin having a number average molecular weight ranging from about 2,000 to about 10,000 Daltons and a polydispersity index of less than about 4.0 and a B-block compatible resin. The A-block compatible reinforcing resin/B-block resin preblend enables introduction of more A-block reinforcing resin into the composition thereby increasing the overall upper service temperature of the adhesive formulation.

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