A kind of novel cationic polymer leather fatliquoring agent and preparation method thereof

A technology of cationic polymer and leather fatliquoring agent, which is applied in leather impregnation, small raw hide/big raw hide/leather/fur treatment, small raw hide/large raw hide/leather skin/fur chemical treatment, etc., which can solve the problem of low dyeing rate , poor absorbency and other problems, to achieve the effect of increasing the absorption rate, reducing the content, and improving the hand feeling

Inactive Publication Date: 2015-11-18
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Common polymer fatliquoring agents are usually obtained by free radical copolymerization of long-chain alkyl (meth)acrylates and carboxyl-containing hydrophilic monomers (such as methacrylic acid, acrylic acid), and are anionic. During use, it will compete with other anionic materials such as anionic fatliquors and anionic dyes, resulting in problems such as low dyeing rate and poor absorbency.

Method used

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  • A kind of novel cationic polymer leather fatliquoring agent and preparation method thereof
  • A kind of novel cationic polymer leather fatliquoring agent and preparation method thereof
  • A kind of novel cationic polymer leather fatliquoring agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) 103.7g of diethylenetriamine and 0.7g of p-toluenesulfonic acid are loaded into a reactor with a water separator, 146.14g of adipic acid are added, stirred evenly, and N 2 , the temperature was raised to 160°C, and the reaction was held for 120 minutes. A bright yellow viscous liquid polydiethylenetriamine adipate (intermediate I) was obtained.

[0033] (2) Cool down the temperature of the product obtained in step 1 to 80°C, add 65g of 1-bromohexadecane into the reactor, and react at 80°C for 120min to obtain intermediate II.

[0034] (3) Cool the intermediate II obtained in step 2 to 30°C, take 100 g of acetone, and add it to the reaction kettle at one time under strong stirring. After stirring for 30 minutes, add 30 g of dimethyl sulfate and react at 50° C. for 180 minutes. After the reaction was completed, the solvent was removed under reduced pressure, the vacuum degree was 10 mmHg, and the temperature was lowered to below 40°C. Add deionized water to adjust ...

Embodiment 2

[0036] (1) 146.24g triethylenetetramine, 2.0g p-toluenesulfonic acid are packed into the reactor with water separator, 146.14g adipic acid, stir evenly, pass into N 2 , the temperature was raised to 150°C, and the reaction was held for 180 minutes. A bright yellow viscous liquid polyamide resin (intermediate I) was obtained.

[0037] (2) Cool down the temperature of the product obtained in step 1 to 70°C, add 380g of 1-bromohexadecane into the reaction kettle, and react at 70°C for 150min to obtain intermediate II.

[0038] (3) Cool the intermediate II obtained in step 2 to 30° C., take 130 g of butanone, and add it to the reactor at one time under strong stirring. After stirring for 60 minutes, 190 g of dimethyl sulfate was added and reacted at 70° C. for 300 minutes. After the reaction was completed, the solvent was removed under reduced pressure, the vacuum degree was 15 mmHg, and the temperature was lowered to below 40°C. Add deionized water to adjust the solid content of...

Embodiment 3

[0040] (1) 103.7g of diethylenetriamine and 1.0g of p-toluenesulfonic acid are loaded into a reactor with a water separator, 146.14g of adipic acid are added, stirred evenly, and N 2 , heated up to 150°C. Insulation reaction 150min. A bright yellow viscous liquid polyamide resin (intermediate I) was obtained.

[0041] (2) Lower the temperature of intermediate I obtained in step 1 to 80°C, take 155g of pentadecylsulfonyl chloride into the reaction kettle, and react at 80°C for 150min to obtain intermediate II.

[0042] (3) Lower the temperature of intermediate II obtained in step 2 to 30°C, and add 150 g of isopropanol into the reactor at one time under vigorous stirring. After stirring for 45 minutes, 185 g of benzyl chloride was added and reacted at 70° C. for 200 minutes. After the reaction was completed, the solvent was removed under reduced pressure, the vacuum degree was 20mmHg, and the temperature was lowered to below 40°C. Add deionized water to adjust the solid con...

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Abstract

The invention belongs to the technical field of leather chemical engineering and relates to a novel cationic polymer leather fat-liquoring agent and a preparation method thereof. The preparation method of the novel cationic polymer leather fat-liquoring agent comprises the following steps of 1, preparing an intermediate I, 2, preparing an intermediate II, and 3, preparing the novel cationic polymer leather fat-liquoring agent. The novel cationic polymer leather fat-liquoring agent is a yellow viscous liquid, has a pH value of 3.0-5.0, and effective substance content of 20-30wt%. The novel cationic polymer leather fat-liquoring agent aqueous emulsion having a ratio of 1: 9 does not layer in 24h and does not produce oil slick. The novel cationic polymer leather fat-liquoring agent has good standing stability and does not go bad at a room temperature in 6 months. The novel cationic polymer leather fat-liquoring agent has excellent dilution-resistant stability, alkali-resistant stability, acid-resistant stability and chromium salt-resistant stability.

Description

(1) Technical field [0001] The invention belongs to the technical field of leather chemical industry, and in particular relates to a novel cationic polymer leather fatliquoring agent and a preparation method thereof. (2) Background technology [0002] Leather fatliquor is one of the indispensable leather chemical materials in modern leather production. The function of the fatliquoring agent is that it can lubricate the collagen fibers of the leather and improve the softness of the finished leather. According to the charge performance of the fatliquoring agent, the fatliquoring agent can be divided into: anionic fatliquoring agent, cationic fatliquoring agent, amphoteric fatliquoring agent and nonionic fatliquoring agent. Among them, cationic fatliquor has unique application properties because of its positive charge on the surface active ingredients: 1. It is used in the pre-oiling process before chrome tanning, which can promote the penetration and uniform distribution of c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C14C9/02C08G69/48C08G69/26
Inventor 靳丽强魏延伟王玉路祝德义
Owner QILU UNIV OF TECH
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