C - Chemistry – Metallurgy – 14 – C
Patent
C - Chemistry, Metallurgy
14
C
117/201, 400/502
C14C 11/00 (2006.01) B32B 27/10 (2006.01) C08L 33/08 (2006.01) D06M 15/285 (2006.01) D06M 15/29 (2006.01) C08L 61/20 (2006.01) C08L 63/00 (2006.01)
Patent
CA 1119736
Abstract of the Disclosure The subject of the invention is a process for coating porous webs, wherein an aqueous, spreadable composition which has a pH value of 3 to 6 and contains at least (A) an emulsion copolymer comprising (a) an alkyl acrylate, (b) acrylonitrile, (c) an ethylenically unsaturated aliphatic carboxylic acid and/or the unsubstituted or methylated N-methylolamide of these carboxylic acids and (d) optionally another copolymer- isable unsaturated compound which is free from acid groups, (B) an organic solvent which is insoluble to at most slightly soluble in water and has boiling point between 50 and 160°C and a molecular weight of 50 to 160, and (C), if desired, a polyfunctional crosslinking aminoplast precondensate or epoxide, is applied to the web, dried and then cured, the web also being impregnated if desired, either before or after coating, but prior to curing, with an agent for imparting hydrophobic and/or oleophobic properties, and dried. The coatings are stable to drycleaning.
288110
Ciba Specialty Chemicals Holding Inc.
Fetherstonhaugh & Co.
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