Composite structure with one or several polyurethane layers,...

Details Composite structure with one or several polyurethane layers,... Composite structure with one or several polyurethane layers,...

2007-07-10

2007-07-10

Yao, Sam Chuan (Department: 1733)

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

C156S079000, C156S289000, C156S331400, C156S331700

Reexamination Certificate

active

10928013

ABSTRACT:
A composite structure is disclosed. The structure includes one or several polyurethane layers, a support layer, in particular a textile support layer, as well as an optional adhesive layer placed between these layers. The composite structure is characterized in that at least one of the polyurethane layers contains a polyurethane having the formula (I)wherein O—R1—O— is the radical of a polyole with primary and/or secondary hydroxyl functional end groups, R1and R2independently represent an organic radical which includes aliphatic, cyclo-aliphatic, aromatic and/or heterocyclic groups, and n is an integer number between 1 and 50,000. Also disclosed is a method of manufacturing the composite structure and its use as imitation leather.

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patent: 19921 143 (1999-05-01), None

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