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A kind of amphoteric polymer additive, preparation method and application thereof

A technology of amphoteric polymers and additives, which is applied in the field of leather processing, can solve the problems of unfavorable anion material absorption, environmental pollution, waste of resources, etc., and achieve the effects of strong market competition, environmental pollution saving, and low price

Active Publication Date: 2021-02-05
JIAXING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, it is not conducive to the absorption of chrome-free tanned leather bases to subsequent anionic materials, resulting in waste of resources and pollution to the environment

Method used

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  • A kind of amphoteric polymer additive, preparation method and application thereof
  • A kind of amphoteric polymer additive, preparation method and application thereof
  • A kind of amphoteric polymer additive, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Amphoteric polymer 1 was prepared as follows:

[0043] S1: Mix 45Kg of acrylic acid and 30Kg of distilled water, and neutralize with 60Kg of 30wt% sodium hydroxide solution;

[0044] S2: Add 50Kg of acryloyloxyethyl dimethyl benzyl ammonium chloride into the mixed solution of S1, and stir evenly;

[0045] S3: prepare 8Kg of 20wt% ammonium persulfate solution;

[0046] S4: Add the S3 solution dropwise to a reaction kettle with a stirrer, a thermometer and a reflux condenser containing 100Kg of bottom water, and stir and react for 2 hours at a temperature of 80° C.;

[0047] S5: Cool down to 40-50°C, and get the product after discharge. Product appearance: light yellow transparent viscous liquid; pH: 5; yield: 80%, see product infrared spectrum figure 1 .

Embodiment 2

[0049] Amphoteric polymer 2 was prepared as follows:

[0050] S1: Mix 50Kg of acrylic acid, 22Kg of sodium propylene sulfonate and 30Kg of distilled water, and neutralize with 80Kg of 30wt% sodium hydroxide solution;

[0051] S2: Add 270Kg of (meth)acryloyloxyethyltrimethylammonium chloride into the mixed solution of S1, and stir evenly;

[0052] S3: prepare 16Kg of 20wt% ammonium persulfate solution;

[0053]S4: dropwise add in the reaction kettle that has stirrer, thermometer and reflux condenser that contains bottom water 530Kg, stir reaction 4 hours at temperature 90 ℃;

[0054] S5: Cool down to 40-50°C, and get ready after discharging. Product appearance: light yellow transparent viscous liquid; pH: 6; yield: 90%, see product infrared spectrum figure 2 .

Embodiment 3

[0056] Amphoteric polymer 3 was prepared as follows:

[0057] S1: Mix 55Kg of methacrylic acid and 30Kg of distilled water, and neutralize with 80Kg of 30wt% sodium hydroxide solution;

[0058] S2: Add 80Kg of acryloyloxyethyl dimethyl benzyl ammonium chloride into the mixed solution of S1, and stir evenly;

[0059] S3: prepare 10Kg of 20wt% ammonium persulfate solution;

[0060] S4: Add the S3 solution dropwise to a reaction kettle with a stirrer, a thermometer and a reflux condenser containing 150Kg of bottom water, and stir and react for 3 hours at a temperature of 90° C.;

[0061] S5: Cool down to 40-50°C, and get ready after discharging. Product appearance: pale yellow transparent viscous liquid; pH: 5.4; yield: 82%.

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Abstract

The invention discloses an amphoteric polymer, which can be used as an auxiliary agent in the dyeing, retanning and fatliquing of chrome-free tanned leather. The amphoteric polymer consists of acrylic monomers, quaternary ammonium salts It consists of monomers or acrylic monomers, quaternary ammonium salt monomers, and sulfonic acid monomers, and provides a synthesis method for amphoteric polymers. The raw material of the compound has a wide range of sources and a relatively low price, and has a strong market competitive advantage. The amphoteric polymer auxiliary agent provided by the present invention is used in the dyeing and retanning of chrome-free tanned leather such as vegetable tanned leather, synthetic tanned leather, vegetable-aluminum combined tanned leather, vegetable-aldehyde combined tanned leather, etc. And fatliquoring, it can obviously help to improve the absorption rate of anionic dyes, retanning agents and fatliquor for this kind of leather base, and the absorption rate can reach more than 90%. Like this, can save and avoid the environmental pollution that may cause.

Description

technical field [0001] The invention belongs to the field of leather processing, and relates to an amphoteric polymer auxiliary agent, a preparation method and an application thereof, in particular to an amphoteric polymer auxiliary agent used in chrome-free tanned leather and a preparation method thereof. Background technique [0002] Amphoteric polymer materials are widely used in water treatment, petroleum drilling, papermaking, mineral processing, liquid transportation and other fields (Shao Dingbo, Ma Xiping. Synthesis performance and application analysis of a kind of amphoteric polymer[J]. Drilling and Production Technology, 1998, 21(6):66-69. Yang Kaiji, Su Wenqiang, Chen Jinghuan, et al.Research Progress on the Preparation and Application of Amphoteric Papermaking Auxiliaries[J]. Chinese Journal of Papermaking, 2007,22(2):119-122. Cheng Jianhua, Chen Shengying .Synthesis and Characterization of Amphoteric Polymer Flocculation Decolorizer PAM / AMPS / DMDAAC[J].Industrial...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/06C08F220/34C08F228/02C08F212/14C08F226/02C14C3/06C14C3/08C14C15/00C14C3/28C14C9/02
CPCC08F220/06C14C3/06C14C3/08C14C3/28C14C9/02C14C15/00C08F220/34C08F228/02C08F212/14C08F226/02
Inventor 罗建勋冯彦娟
Owner JIAXING UNIV