Reactive polyurethane hotmelts with large PSA range

Details Reactive polyurethane hotmelts with large PSA range Reactive polyurethane hotmelts with large PSA range

2007-09-11

2007-09-11

Niland, Patrick (Department: 1714)

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...

C524S589000, C528S044000, C156S060000, C156S307100, C156S307300, C156S320000, C156S327000, C156S330900, C156S331100, C156S331700

Reexamination Certificate

active

10641550

ABSTRACT:
Reactive polyurethane hotmelts comprising crystallizing polyesterpolyols based on fumaric acid and 1,6-hexanediol. These hotmelts exhibit good pressure-sensitive adhesive (PSA) properties over a very broad temperature range. The reactive polyurethane hotmelts are prepared by mixing a polyol mixture containing at least on crystallizing polyesterpolyol with an excess of polyisocyanates.

REFERENCES:
patent: 4839438 (1989-06-01), Evers et al.
patent: 4999407 (1991-03-01), Gilch et al.
patent: 5019638 (1991-05-01), Müller et al.
patent: 5166302 (1992-11-01), Werner et al.
patent: 6093270 (2000-07-01), Ferencz et al.
patent: 6191212 (2001-02-01), Kube
patent: 2003/0022973 (2003-01-01), Hung et al.
Adhesives Age, Nov. 1987, pp. 32-35, “Shaping Reactive Hot Melts Using LMW Copolyesters” by H. F. Huber and H. Muller.

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