C - Chemistry – Metallurgy – 14 – C
Patent
C - Chemistry, Metallurgy
14
C
8/72
C14C 3/22 (2006.01) C08F 220/06 (2006.01) C08F 220/60 (2006.01) C14C 3/28 (2006.01)
Patent
CA 1309561
Abstract The present invention relates to a process to improve the organoleptic behaviour and the physical characteristics of leather by the use of aqueous solutions of copolymers of 90 to 20%-wt acrylic acid or methyacrylic acid, as well as 10 to 80%- wt of a monomer of the formula Image wherein R1 is hydrogen or methyl; R2 and R3, which are equal or different, are methyl or ethyl; x stands for an optionally branched alkylene radical with 1 to 5 carbon atoms; the amine nitrogen is optionally neutralized or quaternized; and the molecular weight of the copolymer, measured at a pH of 8.0, is less than 100,000. The concentration of the copolymer in the aqueous solution is 0.02 to 10%-wt. relative to the shaved weight of the leather.
556991
Hartan Hans-Georg
Kaußen Manfred
Landscheidt Alfons
Stockhausen Dolf
Borden Ladner Gervais Llp
Chemische Fabrik Stockhausen Gmbh
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