| 摘要 |
PURPOSE: A manufacturing method of a leather fatliquor by esterification and oxidation of fatty acid and monomer is provided, which is characterized by being stabilized about salt, acid, alkali and so on, having excellent softness, improving filling of a leather in accordance with molecular weight of alkyl group(R), improving light fastness in accordance with a kind of alkyl group(R), and not having a smell of natural oil. CONSTITUTION: The leather fatliquor is obtained by a process containing the steps of: (i) adding 3mol of ethyleneoxide to fatty acid(soybean oil, palm oil and cottonseed oil), followed by adding 3mol of propylene oxide to the fatty acid; (ii) adding 3mol of ethyleneoxide to C14-C18 of saturated fatty acid(lauric acid, palmitic acid and stearic acid), followed by adding 3mol of propylene oxide to the saturated fatty acid; or (iii) adding 3mol of ethyleneoxide to C14-C18 of unsaturated fatty acid(oleic acid, linoleic acid and linolenic acid), followed by adding 3mol of propylene oxide to the unsaturated fatty acid; making esterification of 1mol anhydrous maleic acid to 2mol fatty acid of the (i), (ii) and (iii); making oxidation; and then making sulphitation.
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