Fabric (woven – knitted – or nonwoven textile or cloth – etc.) – Coated or impregnated woven – knit – or nonwoven fabric which... – Coating or impregnation specified as water repellent
Reexamination Certificate
2006-02-17
2008-09-16
Salvatore, Lynda (Department: 1794)
Fabric (woven, knitted, or nonwoven textile or cloth, etc.)
Coated or impregnated woven, knit, or nonwoven fabric which...
Coating or impregnation specified as water repellent
C442S085000, C442S086000, C428S151000, C428S160000, C428S423100
Reexamination Certificate
active
07425516
ABSTRACT:
This invention relates to solutions of polyurethaneureas in γ-butyrolactone or mixtures of γ-butyrolactone with toxicologically acceptable organic solvents. A process for coating substrates using these polyurethaneurea solutions, and substrates coated by said process are also provided. The substrates coated according to the invention are preferably textile products or leather, but materials such as wood or concrete can also be coated according to the invention.
REFERENCES:
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patent: 4401801 (1983-08-01), Pedain et al.
patent: 5178788 (1993-01-01), Marquis et al.
patent: 5563193 (1996-10-01), Abel et al.
patent: 5688855 (1997-11-01), Stoy et al.
Casselmann Holger
Feller Thomas
Köcher Jürgen
Kurek Gerald
Urban Jürgen
Bayer MaterialScience AG
Cheung Noland J.
Salvatore Lynda
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