C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
117/195, 400/301
C09D 5/02 (2006.01) C08G 18/08 (2006.01) C08G 18/10 (2006.01) C08G 18/12 (2006.01) C08G 18/28 (2006.01) C08G 18/50 (2006.01) C08G 18/72 (2006.01) C08G 18/78 (2006.01) C08G 18/80 (2006.01) C08G 18/84 (2006.01) C08J 5/18 (2006.01)
Patent
CA 1249391
STABLE, AQUEOUS DISPERSIONS OF POLYURETHANE-UREAS AND COATINGS AND FILMS THEREFROM ABSTRACT OF THE DISCLOSURE The present invention relates to a stable, aqueous dispersion of polyurethane-ureas wherein said polyure- thane-ureas contain i) about 2 to 200 milliequivalents per 100 grams of polyurethane-urea of chemically incorporated anionic groups, and ii) up to about 15% by weight, based on the weight of the polyurethane-urea, of lateral and/or terminal hydrophilic chains containing ethylene oxide units, wherein the counterions of the anionic groups are a mixture of volatile and non-volatile cations in an equivalent ratio of about 1:10 to 10:1. The present invention is also directed to the coatings and films prepared from these dispersions.
450683
Beatty Michael C.
Henning Wolfgang
Markusch Peter H.
Meckel Walter
Nachtkamp Klaus
Aktiengesellschaft Bayer
Mobay Chemical Corporation
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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