Method for preparing polymer retanning fat-liquoring agent and retanning fat-liquoring agent

A technology of retanning, fatliquoring and polymer, which is applied in animal husbandry, chemical treatment and application of small raw hide/big raw hide/leather skin/fur, and can solve problems such as poor fatliquoring performance

Inactive Publication Date: 2010-09-15
甘肃宏良皮业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The retanning and filling properties of the copolymer of long-chain fatty alcohol maleic acid monoester and methacrylic acid are good

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027]Take C8 long-chain fatty alcohol and maleic anhydride at a molar ratio of 1:1.05, raise the temperature of C8 long-chain fatty alcohol to 70°C, add maleic anhydride, mix well, then raise the temperature to 90°C, keep warm for 5 hours, and synthesize C8 Long-chain fatty alcohol maleic acid monoester; the synthesized C8 long-chain fatty alcohol maleic acid monoester is cooled to 60°C, and deionized water is added, and the quality of deionized water and the C8 long-chain fatty alcohol maleic acid monoester The ratio is 1:1, stirring for 10 minutes, and then dripping ammonia water into the C8 long-chain fatty alcohol maleic acid monoester added with deionized water within 25-30 minutes, so that the C8 long-chain fatty alcohol maleic acid monoester added with deionized water The pH value of acid monoester is 7.0, obtains C8 long-chain fatty alcohol maleic acid monoester salt; By mass ratio 1: 1, get water and methacrylic acid respectively, dilute methacrylic acid with water, t...

Embodiment 2

[0029] Take C18 long-chain fatty alcohol and maleic anhydride at a molar ratio of 1:1.1, raise the temperature of C18 long-chain fatty alcohol to 75°C, add maleic anhydride, mix well, then raise the temperature to 110°C, keep warm for 2 hours, and synthesize C18 long-chain fatty alcohol maleic acid monoester; cool the synthesized C18 long-chain fatty alcohol maleic acid monoester to 65°C, add deionized water, the quality of deionized water and C18 long-chain fatty alcohol maleic acid monoester The ratio is 2:1, stirred for 20min, then, the mass fraction is 30% sodium hydroxide aqueous solution dropwise in 25~30min in the C18 long-chain fatty alcohol maleic acid monoester that adds deionized water, makes adding deionized The pH value of the C18 long-chain fatty alcohol maleic acid monoester of water is 7.5, and obtains the C18 long-chain fatty alcohol maleic acid monoester salt; by mass ratio 2: 1, take water and methacrylic acid respectively, dilute methacrylic acid with water ...

Embodiment 3

[0031] According to the molar ratio of 1:1.075, take C13 long-chain fatty alcohol and maleic anhydride respectively, raise the temperature of C13 long-chain fatty alcohol to 72.5°C, add maleic anhydride, mix evenly, then raise the temperature to 100°C, keep warm for 3.5h, and synthesize C13 long-chain fatty alcohol maleic acid monoester; cool the synthesized C13 long-chain fatty alcohol maleic acid monoester to 62.5°C, add deionized water, the quality of deionized water and C13 long-chain fatty alcohol maleic acid monoester Ratio 1.5: 1, stirred for 15min, then, the mass fraction is 30% potassium hydroxide aqueous solution dropwise in the long-chain fatty alcohol maleic acid monoester that adds deionized water in 25~30min, makes the addition of deionized water The pH value of C13 long-chain fatty alcohol maleic acid monoester is 7.25, obtains C13 long-chain fatty alcohol maleic acid monoester salt; By mass ratio 1.5: 1, get water and methacrylic acid respectively, dilute methac...

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PUM

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Abstract

The invention discloses a method for preparing a polymer retanning fat-liquoring agent and the retanning fat-liquoring agent. The preparation method comprises the following steps of: preparing long-chain fatty alcohol maleic acid monoester by adopting C8-C18 long-chain fatty alcohol and maleic anhydride, preparing the long-chain fatty alcohol maleic acid monoester into long-chain fatty alcohol maleic acid monoester salt, and then dripping methacrylic acid octadecyl ester, aqueous solution of sodium methacrylate and aqueous solution of initiator into the long-chain fatty alcohol maleic acid monoester salt to perform aqueous emulsion copolymerization to form the polymer retanning fat-liquoring agent. The polymer retanning fat-liquoring agent contains terpolymer of the methacrylic acid octadecyl ester, the long-chain fatty alcohol maleic acid monoester and the methacrylic acid. The preparation method saves an organic solvent during synthesizing the retanning fat-liquoring agent so as to reduce environmental pollution, and meanwhile overcomes the defect of insufficient fat-liquoring performance of a long-chain fatty alcohol maleic acid monoester and methacrylic acid copolymer by introducing oleophilic methacrylic acid octadecyl ester monomer into the polymer.

Description

technical field [0001] The invention belongs to the technical field of leather chemical industry, and relates to a preparation method of a polymer retanning and fatliquoring agent. The invention also relates to a retanning and fatliquoring agent prepared by the method. Octalkyl ester-long-chain fatty alcohol monomaleic acid ester-methacrylic acid terpolymer. Background technique [0002] Polymer retanning and fatliquoring agent has multiple functions such as retanning, fatliquoring, waterproof and high binding (washing resistance, low fogging value), as a high-grade leather chemical material used in leather production, it can shorten the tanning process, Reduce the amount of leather chemical materials and reduce the pollution of tanning wastewater to the environment. Polymer retanning fatliquoring agent is a polymer compound with amphiphilic structure, which consists of long chain alkyl groups containing double bonds as lipophilic monomers (such as octadecyl methacrylate an...

Claims

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Application Information

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IPC IPC(8): C08F220/06C08F222/16C08F220/18C08F2/22C14C3/22C14C9/00
Inventor 李臣
Owner 甘肃宏良皮业股份有限公司
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