发明名称 |
RETANNING PROCESS |
摘要 |
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 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. |
申请公布号 |
CA1309561(C) |
申请公布日期 |
1992.11.03 |
申请号 |
CA19880556991 |
申请日期 |
1988.01.21 |
申请人 |
CHEMISCHE FABRIK STOCKHAUSEN GMBH |
发明人 |
KAUSSEN, MANFRED;STOCKHAUSEN, DOLF;HARTAN, HANS-GEORG;LANDSCHEIDT, ALFONS |
分类号 |
C08F220/06;C08F220/60;C14C3/22;C14C3/28 |
主分类号 |
C08F220/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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