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A kind of amino retanning and fatliquoring agent and preparation method thereof

A retanning, fatliquoring and amino technology, applied in the chemical field, can solve problems such as few researches, and achieve the effects of high absorption efficiency, good softness and surface feel, and good retanning and filling performance

Inactive Publication Date: 2021-04-16
山东黎宁科技新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few studies on amino resin-based amino retanning and fatliquoring agents

Method used

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  • A kind of amino retanning and fatliquoring agent and preparation method thereof
  • A kind of amino retanning and fatliquoring agent and preparation method thereof
  • A kind of amino retanning and fatliquoring agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] a. Esterification reaction. Add 120 parts of Guerbet alcohol and 76 parts of adipic acid into a 1000 mL reactor I equipped with a thermometer, a stirring device and a reflux condenser, raise the temperature to 180°C, and stir evenly. Then add 3 parts of p-toluenesulfonic acid, under the condition of negative pressure of -0.04MPa, react by timing for 6 hours to obtain Guerbet alcohol adipate. b. Amidation reaction. Lower the temperature of the reactor I to 100°C, add 72 parts of melamine in three batches, and control the temperature of the reactor to 100-120°C. After adding melamine, add 5 parts of sodium fluoride, stir evenly, raise the temperature to 130°C and react for 0.5 hours. Continue to heat up to 180°C, and keep the temperature for 2 hours. c. Preparation of sodium hydroxymethanesulfonate solution. Add 63 parts of sodium metabisulfite and 85 parts of deionized water into the 1000 mL reaction kettle II equipped with a thermometer and a stirring device, and st...

Embodiment 2

[0038]a. Esterification reaction. Add 120 parts of Guerbet alcohol and 62 parts of succinic acid into a 1000 mL reactor I equipped with a thermometer, a stirring device and a reflux condenser, raise the temperature to 160°C, and stir evenly. Then add 3.6 parts of p-toluenesulfonic acid, under the condition of -0.04MPa negative pressure, timed reaction for 6 hours to obtain Guerbet alcohol succinate. b. Amidation reaction. Lower the temperature of the reactor I to 100°C, add 72 parts of melamine in three batches, and control the temperature of the reactor to 100-120°C. After adding melamine, add 5 parts of sodium fluoride, stir evenly, raise the temperature to 130°C and react for 0.5 hours. Continue to heat up to 160°C, and keep the temperature for 3 hours. c. Preparation of sodium hydroxymethanesulfonate solution. Add 63 parts of sodium metabisulfite and 85 parts of deionized water into the 1000 mL reaction kettle II equipped with a thermometer and a stirring device, and s...

Embodiment 3

[0040] a. Esterification reaction. Add 120 parts of Guerbet alcohol and 68 parts of adipic acid into a 1000 mL reactor I equipped with a thermometer, a stirring device and a reflux condenser, raise the temperature to 160°C, and stir evenly. Then add 2.8 parts of p-toluenesulfonic acid, under the condition of negative pressure of -0.04MPa, react by timing for 6 hours to obtain Guerbet alcohol adipate. b. Amidation reaction. Cool the reactor I to 100°C, add 45 parts of dicyandiamide in three batches, and control the temperature of the reactor to 100-120°C. After adding dicyandiamide, add 4.5 parts of sodium fluoride, stir evenly, raise the temperature to 130°C and react for 0.5 hours. Continue to heat up to 180° C., and keep the temperature for 3 hours. c. Preparation of sodium hydroxymethanesulfonate solution. Add 58 parts of sodium metabisulfite and 78 parts of deionized water into the 1000mL reaction kettle II equipped with a thermometer and a stirring device, and stir ev...

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Abstract

The present invention provides an amino retanning and fatliquoring agent and a preparation method thereof. The amino retanning and fatliquoring agent of the present invention uses Guerbet alcohol, polybasic fatty acids, polybasic organic amines, sodium metabisulfite, formaldehyde, etc. as main raw materials. The amino retanning and fatliquoring agent prepared by esterification reaction, amidation reaction and condensation reaction can endow leather with better softness and surface feel, and has better fatliquoring performance and The finished leather has good firmness and fullness, and has very good retanning and filling performance; moreover, the amino retanning fatliquoring agent has good combination with chrome tanned leather fibers, high absorption efficiency, and meets the requirements of clean production.

Description

technical field [0001] The invention belongs to the field of chemistry, and in particular relates to an amino retanning and fatliquoring agent and a preparation method thereof. Background technique [0002] The tanning process is mainly composed of batches, soaking, liming, dehairing, reliming, fleshing, deliming, softening, pickling, chrome tanning, neutralization, retanning, fatliquoring, dyeing, finishing and other processes. Among them, the retanning and fatliquoring process endows the leather with fullness, elasticity, full grain, softness, special hand feeling, hydrophobicity and other special properties, which can significantly increase the added value of leather products. Traditional retanning agents mainly include phenolic resins, naphthylaldehyde resins, amino resins, aldehyde tanning agents and acrylic resins. Traditional fatliquor mainly includes modified vegetable oil, modified animal oil, mineral oil, synthetic fatliquor and compound fatliquor. With the deepe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C14C3/18C08G12/40
CPCC08G12/40C14C3/18
Inventor 魏延伟陈煜坤徐纪福
Owner 山东黎宁科技新材料有限公司
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