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Publication numberUST900008 I4
Publication typeGrant
Publication dateJul 18, 1972
Filing dateAug 11, 1971
Priority dateAug 21, 1970
Also published asDE2041550A1
Publication numberUS T900008 I4, US T900008I4, US-I4-T900008, UST900008 I4, UST900008I4
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Defensive publication
US T900008 I4
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Dec. 16, 1969, 869 0.6. 687. The abstracts of Defensive Publication applications are identified by distinctly numbered series and are arranged chronologically. The heading of each abstract indicates the number of pages of specification, including claims and sheets of drawings contained in the application as originally filed. The files of these applications are available to the public-tor inspection and reproduction may be purchased for 30 cents a sheet.

Defensive Publication applications have not been examined as to the merits of alleged invention. The I'gtent Oflice makes no assertion as to the novelty of the disclosed subject matter;

PUBLISHED JULY 18, 1972 T900,008 PROCESS FOR TREATING SHEET MATERIALS WITH ANIONIC AQUEOUS POLYURETHANE DISPERSIONS Gerhard Ball, Cologne, Wolfgang Keberle and Karlheinz Kowalewski, Leverkusen, and Bruno Zorn, Cologne, Germany, assignors to Farbenfabriken Bayer Aktiengesellschaft, Leverkusen, Germany Filed Aug. 11, 1971, Ser. No. 170,961 Claims priority, application Germany, Aug. 21, 1970, P 20 41 550.3 Int. Cl. (308d 9/10; (108g 37/32 US. Cl. 260-214 VA No Drawing. 15 Pages Specification Heat cured coatings are provided for leather and microporous polyurethane or polyvinyl material. The coatings are prepared from aqueous mixtures of trito hexamethylol melamine with 1) dispersions of anionic polyurethanes, with (2) mixtures of dispersions of anionic polyurethanes with vinyl latexes, or with (3) dispersions of graft copolymers of ethylenic monomers with the anionic polyurethanes. The anionic polyurethanes are preferably emulsifier-free aqueous dispersions of polyurethanes having 0.1 to 3% by weight of sulfonate and/or carboxylate groups introduced by combining an alkali salt of taurine, methyltaurine, 6-arninocaproic acid, glycine, sulfanilic acid, diaminobenzoic acid, ornithine or lysine, or addition products of sultones with diamines, with isocyanate group-containing prepolymers prior to or simultaneously with dispersion in Water. The graft copolymers are prepared by introducing monomers into the anionic polyurethane dispersion under free-radical polymerization conditions. Monomers include the free acids, esters and amides of such unsaturated acids as acrylates and maleates, their methylol amides, and the nitrile monomers, vinyl esters, ethers, ketones, and amides, hydrocarbons as styrenes, mono and diolefins, etc. Anionic or nonionic emulsifiers other than the anionic polyurethane may optionally be used. Acid catalyst and modifiers such as pigments, dyes and stabilizers, etc. may be included.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
WO1981002894A1 *Apr 9, 1981Oct 15, 1981Textron IncPolymer compositions and manufacture
U.S. Classification524/100, 525/455, 428/473, 428/315.5, 525/456, 525/157
International ClassificationC08G18/83, C08G18/08, C09D175/04, C14C11/00, D06M15/564, D06N3/14, C08F283/00
Cooperative ClassificationC09D175/04, C08G18/0819, C08F283/006, D06M15/564, C08G18/833, D06N3/14, C14C11/006
European ClassificationC09D175/04, D06M15/564, C14C11/00B2, C08G18/83C, D06N3/14, C08F283/00B, C08G18/08B6