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Amphoteric retanning fatliquor 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, simplified solution, and convenient operation

Active Publication Date: 2018-08-07
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 retanning process, thereby reducing the retanning and fatliquoring agent. The retanning and fatliquoring agent are combined to simplify the retanning process The advantage

Method used

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  • Amphoteric retanning fatliquor and preparation method thereof
  • Amphoteric retanning fatliquor and preparation method thereof
  • Amphoteric retanning fatliquor and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0035] This embodiment relates to an amphoteric retanning and fatliquoring agent and a preparation method thereof, and its preparation specifically includes the following steps:

[0036] 1) Synthesis of maleic anhydride monoamide with maleic anhydride and C12-18 carbon amine:

[0037]

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

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

[0040]

[0041] Among them, R is an alkyl group of C12~C18, and R' is

[0042] 3) Compounding the synthesized ternary polymer and vegetable oil-modified phosphate according to a certain ratio (1:9-9:1) to obtain retanning type fatliquor with different properties.

[0043] The preferred ratio is compounded under the condition of 4:6, and the obtained retanning and fatliquoring agent has good retanning and filling effects. In particular, the retanning and fatliquoring process can be simplified without adding othe...

Embodiment 2

[0050] This embodiment relates to a kind of amphoteric retanning and fatliquor and its preparation method, and its preparation method is the same as embodiment 1, the difference is:

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

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

[0053] In step 3), the natural vegetable oil soybean lecithin is 320g, ethylene glycol is 896g, alcoholysis under the condition of pH: 3.5; 2 SO 3 Wash the aqueous solution twice, adjust the pH to 6.5 with ammonia water, then centrifuge to remove the lower layer of oil, then adjust the final pH to 6.5 with 20wt% NaOH solution, and then separate the upper layer by centrifuging waste liquid, and use 5-8wt % solubility sodium chloride solution after washing, add 0.1wt% antifungal agent and 0.1wt% rose essence to obtain vegetable oil modified phosphate ester;

[0054] In step 4), the mass rat...

Embodiment 3

[0056] This embodiment relates to a kind of amphoteric retanning and fatliquor and its preparation method, and its preparation method is the same as embodiment 1, the difference is:

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

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

[0059] In step 3), the natural vegetable oil soybean lecithin is 320g, ethylene glycol is 902g, alcoholysis under the condition of pH: 4.5; 2 SO 3 Wash the aqueous solution twice, adjust the pH to 7.0 with ammonia water, then centrifuge to remove the lower layer of oil, then adjust the final pH to 7.5 with 30wt% NaOH solution, and then separate the upper layer from the centrifuged waste liquid, and use 5 to 8 wt% of the lower layer to % solubility sodium chloride solution after washing, add 3.0wt% antifungal agent and 1.0wt% rose essence to obtain vegetable oil modified phosphate;

[0060...

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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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Patent Type & Authority Patents(China)
IPC IPC(8): C14C3/22C14C3/12C14C9/02C08F220/34C08F222/38C08F220/06
CPCC08F220/34C14C3/12C14C3/22C14C9/02C08F222/38C08F220/06
Inventor 张建维刘四华孙治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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