Top coating composition for leather

A top coating composition for leather comprises (a) from 20 to 60% by weight of at least one dispersed copolymer A formed from (a1) from 40 to 70% by weight of at least one ester A1 of methacrylic acid with C1-8-alkanols, (a2) from 25 to 60% by weight of at least one ester A2 of acrylic acid with C1...

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Bibliographische Detailangaben
Hauptverfasser:	SCHOPKE HOLGER, ADAMS STEFAN, SCHEIDL HELFRIED
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS THEREFOR CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING,IMPREGNATING, FINISHING CHEMISTRY COMPOSITIONS FOR TANNING HIDES LEATHER METALLURGY PELTS SKINS
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Beschreibung
Zusammenfassung:	A top coating composition for leather comprises (a) from 20 to 60% by weight of at least one dispersed copolymer A formed from (a1) from 40 to 70% by weight of at least one ester A1 of methacrylic acid with C1-8-alkanols, (a2) from 25 to 60% by weight of at least one ester A2 of acrylic acid with C1-8-alkanols, (a3) from 0 to 3.5% by weight of at least one C3-C6 alpha,beta-monoethylenically unsaturated carboxylic acid A3, (a4) from 0 to 4% by weight of at least one further auxiliary monomer A4 such as hydroxypropyl acrylate, ureidomethacrylate, acrylamide, methacrylamide, N-methylolacrylamide, N-methylolmethacrylamide, A1, A2 and optionally A3 and/or A4 adding up to a total of 100% by weight, (b) at least 40% by weight of water (B), (c) from 0 to 40% by weight of polyurethane top coating composition C for leather, A, B and optionally C adding up to a total of 100% by weight and the top coating composition being free of plasticizers and synthetic waxes.