Amphoteric retanning fatting agent and preparation method thereof

A retanning and fatliquoring and amphoteric technology, which is applied in the field of amphoteric retanning and fatliquoring agents and their preparation, can solve problems such as reduction, and achieve the effects of mild production process, high exhaustion rate, and shortened retanning and fatliquoring process

Active Publication Date: 2017-03-29
汤普勒新材料嘉兴有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the retanning and fatliquoring agent focuses on the fatliquoring function, which leads to the need to add a certain amount of retanning agent in the retanni

Method used

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  • Amphoteric retanning fatting agent and preparation method thereof
  • Amphoteric retanning fatting agent and preparation method thereof
  • Amphoteric retanning fatting agent and preparation method thereof

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0034] Example 1

[0035] This embodiment relates to an amphoteric retanning fatliquor and a preparation method thereof. The preparation specifically includes the following steps:

[0036] 1) Synthesize maleic anhydride monoamide with maleic anhydride and C12~18 carbon amine:

[0037]

[0038] Wherein, R is a C12 to C18 alkyl group.

[0039] 2) Maleic anhydride monoamide, acrylic acid and methacrylic acid trimethylaminoethyl chloride are copolymerized to form a terpolymer.

[0040]

[0041] Where R is a C12~C18 alkyl group, and R’ is

[0042] 3) The synthetic terpolymer and vegetable oil modified phosphate are compounded according to a certain ratio (1:9-9:1) to obtain retanning type fatliquors with different properties.

[0043] The preferred ratio is 4:6 for compounding. The obtained retanning fatliquor has good retanning and filling effects. In particular, it can simplify the retanning and fatliquing process without adding other retanning agents or adding The fatting agent material c...

Example Embodiment

[0049] Example 2

[0050] This embodiment relates to an amphoteric retanning fatliquor and a preparation method thereof. The preparation method is the same as that of Example 1, except that:

[0051] In step 1), maleic anhydride is 40g, and C12 amine is 40g;

[0052] In step 2), 100g of maleic anhydride monoamide, 120g of trimethylaminoethyl methacrylate monomer, and 50g of acrylic acid;

[0053] In step 3), the natural vegetable oil soy phospholipid is 320g, the ethylene glycol is 896g, and the alcoholysis is carried out under pH: 3.5; the prepared vegetable oil modified phospholipid pre-products are respectively 15wt% Na 2 SO 3 Wash the aqueous solution twice, adjust the pH to 6.5 with ammonia, remove the oil from the lower layer by centrifugation, adjust the end-point pH to 6.5 with 20wt% NaOH solution, separate the upper layer again by centrifugal waste, and use 5-8wt for the lower layer After washing with% soluble sodium chloride solution, add 0.1wt% anti-mold agent and 0.1wt% r...

Example Embodiment

[0055] Example 3

[0056] This embodiment relates to an amphoteric retanning fatliquor and a preparation method thereof. The preparation method is the same as that of Example 1, except that:

[0057] In step 1), maleic anhydride is 40g, and C18 amine is 50g;

[0058] In step 2), 100 g of maleic anhydride monoamide, 200 g of trimethylaminoethyl methacrylate monomer, and 80 g of acrylic acid;

[0059] In step 3), the natural vegetable oil soybean phospholipid is 320g, the ethylene glycol is 902g, and the alcoholysis is carried out at pH: 4.5; the prepared vegetable oil modified phospholipid pre-products are respectively 20wt% Na 2 SO 3 Wash the aqueous solution twice, adjust the pH to 7.0 with ammonia, remove the oil from the lower layer by centrifugation, adjust the end-point pH to 7.5 with 30wt% NaOH solution, separate the upper layer again by centrifugal waste, and use 5-8wt for the lower layer After washing with% soluble sodium chloride solution, add 3.0wt% anti-mold agent and 1.0w...

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Abstract

The invention discloses an amphoteric retanning fatting agent and a preparation method thereof. The preparation method of the amphoteric retanning fatting agent comprises the steps that maleic anhydride, maleic anhydride monoamide, acrylic acid and tri-methylamino ethyl methacrylate serve as raw materials, wherein maleic anhydride monoamide is generated through a reaction of amine C12, amine C13, amine C14, amine C15, amine C16, amine C17 and amine C18; terpolymer is synthesized; and then, terpolymer is compounded with vegetable-oil-modified phosphate ester, so that the amphoteric retanning fatting agent is generated. The retanning fatting agent has the double functions of retanning and fatting; technological time can be shortened; and in addition, due to the amphoteric structure of the retanning fatting agent, bleaching cannot occur, and besides, other chemical materials can be assisted in permeation and absorption.

Description

technical field [0001] The invention relates to the field of leather chemical materials, in particular to an amphoteric retanning and fatliquoring agent and a preparation method thereof. Background technique [0002] Since the retanning and fatliquoring agent can combine the retanning and fatliquoring processes into one, it is helpful to shorten the production cycle when used in tanning production. In addition, because more groups are introduced, its bonding points are more and the bonding degree is lower. High, also helps to reduce the BOD and COD value of wastewater, so more and more attention has been paid to the research on retanning and fatliquoring agents, and it has become a hot spot in the industry. [0003] The combination of the retanning and fatliquoring process has a positive contribution to environmental protection compared with the traditional production process: [0004] 1. Can save about 20% of the total water consumption [0005] 2. Compared with the tradi...

Claims

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Application Information

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IPC IPC(8): C14C3/22C14C3/12C14C9/02C08F220/34C08F222/38C08F220/06
CPCC14C3/12C14C3/22C14C9/02C08F220/34C08F222/38C08F220/06
Inventor 张建维刘四华孙志国金硕王永峰胡明晓
Owner 汤普勒新材料嘉兴有限公司
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