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Self-aroma multi-branched polymer fatliquor and preparation method thereof

A technology of polymer and fatliquoring agent, which is applied in animal husbandry, small raw hide/large raw hide/leather/fur treatment, leather impregnation, etc. It can solve the problems of application limitations, achieve enhanced bonding function, novel product structure, and avoid environmental pollution. pollution effect

Active Publication Date: 2021-09-17
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

With the improvement of people's requirements for the function and environmental performance of fatliquor, the application of traditional fragrance fatliquor is more and more restricted

Method used

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  • Self-aroma multi-branched polymer fatliquor and preparation method thereof
  • Self-aroma multi-branched polymer fatliquor and preparation method thereof
  • Self-aroma multi-branched polymer fatliquor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Esterification reaction. Add 180.22 parts of tributyl citrate, 77.13 parts of linalool and 25.73 parts of maleic anhydride into a 1000 mL three-necked flask equipped with a thermometer, a stirring device and a reflux condenser, and stir evenly. Then add 50 parts of ethylene glycol tert-butyl ether, raise the temperature to 85°C, and stir evenly. Add 2.83 parts of p-toluenesulfonic acid, control the temperature at 85±2°C, and time the reaction for 2 hours. Continue to heat up to 110°C, and stir for 1h. Lower the temperature to 85±2°C to obtain citrate linalool maleic ester.

[0037] (2) Free radical polymerization. Control the temperature at 85±2°C, fill the three-necked bottle with nitrogen, and replace it for 10 minutes. Take 0.2 parts of oil-soluble initiator azobisisobutyronitrile into the three-necked flask, and stir for 5 minutes. Take 19.85 parts of acrylic acid and drop them into the three-necked bottle at a constant speed, and the dropping time is 1.5 h...

Embodiment 2

[0040] (1) Esterification reaction. Add 275.34 parts of glyceryl stearic acid citrate, 61.7 parts of linalool and 25.73 parts of maleic anhydride into a 1000 mL three-necked flask equipped with a thermometer, a stirring device and a reflux condenser, and stir evenly. Then add 50 parts of ethylene glycol tert-butyl ether, raise the temperature to 90°C, and stir evenly. Add 3.63 parts of p-toluenesulfonic acid, control the temperature at 90±2°C, and time the reaction for 1 hour. Continue to heat up to 115°C, and stir for 3h. Lower the temperature to 90±2°C to obtain linalool maleic acid ester citrate.

[0041] (2) Free radical polymerization. Control the temperature at 90±2°C, fill the three-necked bottle with nitrogen, and replace it for 10 minutes. Take 0.37 parts of oil-soluble initiator benzoyl peroxide and add it into a three-necked flask, and stir for 5 minutes. Take 24.57 parts of acrylic acid and drop them into a three-necked flask at a constant speed for 1.5 hours....

Embodiment 3

[0044] (1) Esterification reaction. Add 221 parts of stearyl citrate, 77.13 parts of linalool and 26.96 parts of maleic anhydride into a 1000 mL three-necked flask equipped with a thermometer, a stirring device and a reflux condenser, raise the temperature to 60°C, and stir evenly. Then add 50 parts of ethylene glycol tert-butyl ether, raise the temperature to 90°C, and stir evenly. Add 4.88 parts of p-toluenesulfonic acid, control the temperature at 90±2°C, and time the reaction for 2 hours. Continue to heat up to 105°C and stir for 2h. Lower the temperature to 88±2°C to obtain linalool maleic ester of citrate.

[0045] (2) Free radical polymerization. Control the temperature at 88±2°C, fill the three-necked bottle with nitrogen, and replace it for 10 minutes. Take 0.35 parts of oil-soluble initiator, azobisisobutyronitrile, and add it into a three-necked flask, and stir for 5 minutes. Take 24.57 parts of acrylic acid and drop them into the three-necked flask at a consta...

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Abstract

The invention discloses a self-aroma multi-branched polymer fatliquor and a preparation method thereof, and the self-aroma multi-branched polymer fatliquor is prepared by taking citrate, single-chain terpene alcohol, alkenyl dianhydride, an acrylic acid monomer, an organic acid catalyst, an oil-soluble initiator and neutralizer liquid as raw materials and taking an organic solvent as a dispersing agent. The preparation method comprises esterification reaction, free radical polymerization reaction and neutralization reaction, and has the characteristics of novel preparation technical route and novel product structure. The obtained polymer fatliquor has lasting fragrance, and has good core-penetrating softness and surface moistening hand feeling. The multi-branch structure of the self-fragrance multi-branch polymer fatliquor can enhance the combination function with collagenous fibers, the absorption rate is high, the COD (Chemical Oxygen Demand) of tanning production wastewater can be effectively reduced, and the requirement of clean production is met. Meanwhile, after the leather is fatted by the self-fragrant branched polymer fatliquor, the leather keeps a fresh scent with strong permeability for a long time, and is a preferred material for fatting high-grade sofa leather, automobile cushion leather, clothing leather and bag leather.

Description

technical field [0001] The invention belongs to the field of leather production fatliquoring technology, and in particular relates to a self-scented polydendron polymer 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 fatliquor covers the surface of leather collagen fibers by winding and forming a film, reduces the friction coefficient and interfacial tension between collagen fibers, and endows the finished leather with good softness, fullness and other special properties. With the development of the tanning industry, people can no longer satisfy the traditional fatliquor with a single function, and put forward higher and higher requirements for the performance, quality and special functions of the fatli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/06C08F222/26C08F8/44C14C9/02
CPCC08F220/06C08F8/44C14C9/02C08F222/26
Inventor 陈煜坤魏延伟陈恩艳张伟强王生建辛中印
Owner 山东黎宁科技新材料有限公司
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