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Method for preparing lecithoid retanning agent with lipide being added

A technology of retanning agent and phospholipid, which is applied in the field of preparation of phospholipid fatliquoring retanning agent, can solve the problems of no moisturizing effect, lack of moisturizing feeling of leather, and inconspicuous fatliquoring effect, etc., and achieve good emulsion stability and moisturizing feeling The effect of strengthening and increasing elasticity

Inactive Publication Date: 2005-01-12
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these types of fatliquoring retanning agents have obvious retanning effect, but because the lipophilic group is a simple long-chain alkyl group, the fatliquoring effect is not obvious, and there is no moisturizing effect, and the leather after retanning lacks moisture.

Method used

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  • Method for preparing lecithoid retanning agent with lipide being added

Examples

Experimental program
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Effect test

Embodiment 1

[0006] Example 1: First, 4 moles of acrylic acid and 6 moles of maleic anhydride are dissolved in 200% of its own mass in toluene as a mixed single solution, and 1% of its monomer mass in benzoyl peroxide is dissolved in 10 times its own mass in toluene As the initiator solution, add the initiator solution dropwise to the mixed monomer solution under stirring at 100°C, and the dropping time is controlled at 30 minutes. After 8 minutes after the dropwise addition, add 0.1% mercaptoacetic acid of the monomer mass, and keep warm React for 30 minutes to obtain acrylic acid-maleic anhydride copolymer; then heat the concentrated soybean lecithin containing more than 70% of phospholipid to 70°C, add dropwise 10% of concentrated phospholipid mass percentage concentration of 16% peracetic acid, add dropwise 40 minutes, oxidation reaction for 30 minutes, vacuum dehydration after the reaction to obtain milky white slurry hydroxylated phospholipids; finally, heat 100 parts of hydroxylated ...

Embodiment 2

[0008] Embodiment 2: at first 2 moles of acrylic acid and 8 moles of maleic anhydride are dissolved with 200% of its own mass in toluene as a mixed monomer solution, and 6% of its own mass of benzoyl peroxide is dissolved with 10 times of its own mass in toluene Dissolve as the initiator solution, add the initiator solution dropwise to the mixed monomer solution under stirring at 50°C, the dropping time is controlled at 60 minutes, after 15 minutes after the dropwise addition, add 0.5% mercaptoacetic acid of the monomer mass, Heat preservation reaction for 90 minutes to obtain acrylic acid-maleic anhydride copolymer; then heat the concentrated soybean lecithin containing more than 70% phospholipid to 65°C, add dropwise the peracetic acid with a mass percentage concentration of 7% of the concentrated lecithin mass is 16%, drop Add 20 minutes, oxidize for 40 minutes, remove water in vacuum after the reaction is over to obtain milky white slurry-like hydroxylated phospholipids; fi...

Embodiment 3

[0009] Embodiment 3: first 3 moles of acrylic acid and 9 moles of maleic anhydride are dissolved with 200% of its own mass in toluene as a mixed monomer solution, and 3% of its own mass of benzoyl peroxide is dissolved with 10 times its own mass of toluene Dissolve as the initiator solution, add the initiator solution dropwise to the mixed monomer solution under stirring at 80°C, the dropping time is controlled at 45 minutes, after 12 minutes after the dropwise addition, add 0.2% mercaptoacetic acid of the monomer mass, Insulation reaction for 82 minutes to obtain acrylic acid-maleic anhydride copolymer; then the concentrated soybean lecithin containing more than 70% of phospholipids was heated to 50°C, and the concentration of 5% of the concentrated lecithin mass was added dropwise with peracetic acid having a concentration of 16%. Add 35 minutes, oxidize for 60 minutes, remove water in vacuum after the reaction is over to obtain milky white slurry-like hydroxylated phospholip...

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Abstract

A preparation method for phosphatide oiling retaining agent takes maleic anhydride and acrylic acid as the raw materials to synthesize an acrylic-maleic anhydride low polymer, acetic acid peroxide is used to oxidize and concentrate bean phosphatide to prepare phosphatide hydroxide, then the acrylic acid-maleic anhydride polymer is condensated with the phosphatide hydroxide to prepare the phosphatide oiling retanning agent.

Description

technical field [0001] The invention relates to a preparation method of a retanning agent for tanning, in particular to a preparation method of a phospholipid fatliquoring retanning agent. Background technique [0002] Retanning is an important process in tanning production, known as the "Golden Touch" of tanning. In order to give the leather a plump, soft and elastic feel, it is necessary to use a retanning agent with good fatliquoring effect during retanning. The method that the retanning agent that prepares at present has fatliquoring effect generally adopts at home and abroad is, with acrylate high-carbon alcohol ester or maleic acid high-carbon alcohol ester and vinyl monomer copolymerization (Wei Deqing, Liu Xiangjun, Liu Zonghui etc. FRT complex Research on tanning and fatliquoring agents. China Leather, 1998, 27(1): 9-11; Lu Liang. Development of maleic anhydride amphiphilic retanning and fatliquoring agents. Leather Chemical Industry, 1998, 15(6): 16-18 ), or copo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C3/22
Inventor 王鸿儒楼建新
Owner SHAANXI UNIV OF SCI & TECH
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