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Amphiprotic amphiphilic leather retanning fatting agent and preparation method thereof

A retanning, fatliquoring and leather technology, applied in leather dipping, small raw hide/big raw hide/leather/fur treatment, small raw hide/large raw hide/leather skin/fur chemical treatment, etc., can solve discoloration and poor copolymerization ability , poor fatliquoring performance and other problems, to achieve the effects of enhanced absorption, firm combination, excellent and durable softness

Active Publication Date: 2013-06-05
四川德赛尔新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this synthetic route, although the use of organic solvents is avoided, due to the poor copolymerization ability of maleic acid monoester or maleic acid monoamide, a blend is often obtained, and its fatliquoring performance is poor
In addition, the currently reported polymer retanning and fatliquoring agents are all anionic materials, which tend to compete with anionic dyes during use, resulting in "fading" phenomenon

Method used

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  • Amphiprotic amphiphilic leather retanning fatting agent and preparation method thereof
  • Amphiprotic amphiphilic leather retanning fatting agent and preparation method thereof
  • Amphiprotic amphiphilic leather retanning fatting agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] ⑴ First, take 1-bromohexadecane and diallylamine respectively according to the molar ratio of 1:1, raise the temperature to 80°C, mix well, keep warm for 8 hours, remove unreacted substances by distillation under reduced pressure, and vacuum degree is 0.05 MPa, obtain N-hexadecyl diallylamine;

[0027] (2) Cool N-hexadecyl diallylamine to 40°C, add deionized water, the mass ratio of deionized water to N-hexadecyl diallylamine is 2:1, add formic acid to adjust the solution The pH is 2~3, obtains N-hexadecyl diallylamine formate solution;

[0028] (3) Add diallylamine to deionized water, the mass ratio of diallylamine to deionized water is 1:1, add formic acid to adjust the pH of the solution to 2-3, and obtain formate of diallylamine solution;

[0029] ⑷ Dissolve acrylic acid, N-hexadecyl diallylamine formate, and diallylamine formate in deionized water according to the mass ratio of 100:50:15. 4 times the mass, heat up to 80°C, mix well, add 1.5% ammonium persulfate ...

Embodiment 2

[0031] ⑴ First, take 1-bromododecane and diallylamine respectively according to the molar ratio of 1:1, raise the temperature to 80°C, mix well, keep warm for 10 hours, remove unreacted substances by distillation under reduced pressure, and the vacuum degree is 0.05 MPa, obtain N-dodecyl diallylamine;

[0032] (2) Cool N-dodecyl diallylamine to 40°C, add deionized water, the mass ratio of deionized water to N-dodecyl diallyl amine is 2:1, add acetic acid to adjust the solution The pH is 2~3, obtains N- dodecyl diallyl amine acetate solution;

[0033] (3) Add diallylamine to deionized water, the mass ratio of diallylamine to deionized water is 1:1, add acetic acid to adjust the pH of the solution to 2-3, and obtain acetate of diallylamine solution.

[0034] ⑷ Dissolve methacrylic acid, N-dodecyl diallylamine acetate, and diallylamine acetate in deionized water according to the mass ratio of 100:50:10, and the quality of deionized water is one 4 times the total mass of the mo...

Embodiment 3

[0036] ⑴ First, take 1-bromooctane and diallylamine respectively according to the molar ratio of 1:1.05, raise the temperature to 80°C, mix well, keep it warm for 8 hours, and distill under reduced pressure to remove unreacted substances, the vacuum degree is 0.05MPa , to obtain N-octyldiallylamine;

[0037] (2) Cool N-octyldiallylamine to 40°C, add deionized water, the mass ratio of deionized water to N-octyldiallylamine is 1:1, add formic acid to adjust the pH of the solution 2 to 3 to obtain N-octylalkyldiallylamine formate solution;

[0038] (3) Add diallylamine to deionized water, the mass ratio of diallylamine to deionized water is 1:1, add formic acid to adjust the pH of the solution to 2-3, and obtain formate of diallylamine solution.

[0039] (4) Dissolve methacrylic acid, N-octyl diallylamine formate, and diallylamine formate in deionized water according to the mass ratio of 100:80:20, and the quality of deionized water is unit 5 times the total mass of the monome...

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PUM

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Abstract

The invention discloses amphiprotic amphiphilic leather retanning fatting agent and a preparation method of the amphiprotic amphiphilic leather retanning fatting agent. The constituent of the amphiprotic amphiphilic leather retanning fatting agent is (methyl) crylic acid-N-alkyl diene propyl amine-diallylamine terpolymer. According to the preparation method of the amphiprotic amphiphilic leather retanning fatting agent, N-alkyl diene propyl amine is firstly prepared, then the N-alkyl diene propyl amine, diallylamine, and (methyl) crylic acid are adopted for a free radical copolymerization reaction under the acidic condition to obtain an aqueous dispersoid containing the (methyl) crylic acid-N-alkyl diene propyl amine-diallylamine terpolymer, the solid content of a product is adjusted to 15-20% with water, and the amphiprotic amphiphilic leather retanning fatting agent is obtained. The molecular structure of the amphiprotic amphiphilic leather retanning fatting agent contains carboxyl of negative ions and tertiary amino of positive ions, and the polymer can display different electrical properties under different conditions of potential of hydrogen (PH), meanwhile the polymer contains alkyl of a long chain, and functions of lubrication fibers can be achieved. The polymer has the function of retanning, fatting and dyeing assistance at the same time, physical and mechanical properties of processed crust leather, such as tensile strength, fullness, softness and elasticity, are all improved, the surface of the processed crust leather is strong in lubrication feel and comfortable in hand feel, and the leather has a good waterproof performance.

Description

technical field [0001] The invention belongs to the technical field of leather chemical industry, and in particular relates to an amphoteric amphiphilic polymer leather retanning and fatliquoring agent and a preparation method thereof. Background technique [0002] Polymer retanning and fatliquor is a polymer that has affinity for two different phase structures (such as water phase and oil phase) in the same polymer. Polymer retanning and fatliquoring agents have outstanding application characteristics in tanning production. For example, they have the properties of retanning and fatliquoring at the same time, which can shorten the time of leather treatment, reduce the BOD and COD values ​​of tanning wastewater, and have the ability to disperse oil. It can promote the penetration and combination of fatliquoring agent, firmly bond with leather, and will not migrate to the leather surface to form "white frost", so that crust leather has excellent long-lasting softness, solvent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C3/22C14C9/04C08F220/06C08F226/04C08F226/02
Inventor 丁学斌靳丽强彭元华
Owner 四川德赛尔新材料科技有限公司
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