Stock material or miscellaneous articles – Composite – Of polyamidoester
Reexamination Certificate
2005-02-08
2005-02-08
Seidleck, James J. (Department: 1711)
Stock material or miscellaneous articles
Composite
Of polyamidoester
C428S423300, C428S424600, C428S424800, C428S904000
Reexamination Certificate
active
06852418
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.
REFERENCES:
patent: 3816168 (1974-06-01), Lewis et al.
patent: 3943075 (1976-03-01), Fishbein et al.
patent: 4190694 (1980-02-01), Muck et al.
patent: 5156900 (1992-10-01), Nishimura
patent: 199 21 143 (1999-05-01), None
Oertel, Gunter. Polyurethane Handbook, 2nded. Hanser Publishers, New York: 1994, pp. 55-65.
Kruse Hans-Hinrich
Zürbig Claus
Benecke-Kaliko AG
Bissett Melanie
Darby & Darby
Seidleck James J.
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