Preparation method for composite type phosphate ester leather fat-liquoring agent of polyurethane containing nonionic structures

A compound phosphate ester, non-ionic technology, applied in leather impregnation, small raw hide/large raw hide/leather/fur treatment, small raw hide/large raw hide/leather hide/fur chemical treatment, etc., to improve emulsifying ability and permeability , Low freezing point, good emulsifying effect

Inactive Publication Date: 2016-01-20
CHENGDU ORGANIC CHEM CO LTD CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the problems existing in the existing phosphate ester fatliquor, the purpose of this invention is to provide a kind of preparation method of the composite phosphate ester leather fatliquor containing non-ionic structure polyurethane. P2O5 is effectively dispersed, and then compounded with synthetic polyurethane containing non-ionic structure and high-carbon alcohols to obtain it.

Method used

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  • Preparation method for composite type phosphate ester leather fat-liquoring agent of polyurethane containing nonionic structures
  • Preparation method for composite type phosphate ester leather fat-liquoring agent of polyurethane containing nonionic structures
  • Preparation method for composite type phosphate ester leather fat-liquoring agent of polyurethane containing nonionic structures

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Experimental program
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Effect test

Embodiment 1

[0034] Synthesis of polyurethane containing non-ionic structure:

[0035]Under the conditions of 120°C and a vacuum of 0.09MPa, the polyoxypropylene ether and the polyoxyethylene monomethyl ether with a number average molecular weight of 1000 and 750 were respectively subjected to vacuum distillation to remove moisture; Add 50g of the above-mentioned dehydrated polyoxypropylene ether and 0.03g of dibutyltin dilaurate (DBTDL), raise the temperature to 80°C, and stir for 30 minutes; add 11.1g of isophorone diisocyanate (IPDI ), react for 2h; add 37.5g of polyoxyethylene monomethyl ether to the reaction vessel, and react for 2h at the above temperature to obtain polyurethane containing non-ionic structure.

[0036] Synthesis of composite phosphate fatliquoring agent containing non-ionic structure polyurethane:

[0037] Distill the polyoxypropylene ether (PPG) with a number average molecular weight of 1000 under reduced pressure at 120°C and a vacuum of 0.09MPa to remove water; a...

Embodiment 2

[0039] Synthesis of polyurethane containing non-ionic structure:

[0040] Under the conditions of 120°C and a vacuum of 0.09MPa, the polyoxypropylene ether and the polyoxyethylene monomethyl ether with a number average molecular weight of 2000 and 1000 were respectively subjected to vacuum distillation to remove moisture; Add 100g of the above-mentioned dehydrated polyoxypropylene ether and 0.03g of dibutyltin dilaurate (DBTDL), raise the temperature to 80°C, and stir for 30 minutes; add 11.1g of isophorone diisocyanate (IPDI ), react for 2h; add 50g of polyoxyethylene monomethyl ether to the reaction vessel, and react for 2h at the above temperature to obtain polyurethane containing non-ionic structure.

[0041] Synthesis of composite phosphate fatliquoring agent containing non-ionic structure polyurethane:

[0042] Distill the polyoxypropylene ether (PPG) with a number average molecular weight of 2000 under reduced pressure at 120°C and a vacuum of 0.09MPa to remove water; ...

Embodiment 3

[0044] Synthesis of polyurethane containing non-ionic structure:

[0045] Under the conditions of 120°C and a vacuum of 0.09MPa, the polyoxypropylene ether and the polyoxyethylene monomethyl ether with a number average molecular weight of 1000 and 500 were respectively subjected to vacuum distillation to remove moisture; Add 40g of the above-mentioned dehydrated polyoxypropylene ether and 0.03g of dibutyltin dilaurate (DBTDL), raise the temperature to 80°C, and stir for 30 minutes; dropwise add 8.9g of isophorone diisocyanate (IPDI ), react for 2h; add 20g of polyoxyethylene monomethyl ether to the reaction vessel, and react for 2h at the above temperature to obtain polyurethane containing non-ionic structure.

[0046] Synthesis of composite phosphate fatliquoring agent containing non-ionic structure polyurethane:

[0047] Distill the polyoxypropylene ether (PPG) with a number average molecular weight of 1000 under reduced pressure at 120°C and a vacuum of 0.09MPa to remove w...

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Abstract

The invention provides a preparation method for a composite type phosphate ester leather fat-liquoring agent of polyurethane containing nonionic structures. P2O5 is effectively dispersed through low-melting-point polyoxypropylene ether at first and then is subjected to compound esterification with the composite polyurethane containing the nonionic structures and high alcohols, and the composite type phosphate ester leather fat-liquoring agent is obtained. The preparation method has the advantages that polyurethane phosphate ester which serves as both a nonionic surfactant and an anionic surfactant is adopted as an emulsifier of the fat-liquoring agent, so that the emulsifying capacity and the permeability of the fat-liquoring agent are improved; meanwhile, the characteristic that a PO bond in the phosphate ester can be subjected to complexation with active groups on leather fibers is used, so that the stability and the combining capacity with chrome tanning leather collagen fibers of emulsion of the fat-liquoring agent are improved.

Description

technical field [0001] The invention relates to the technical field of leather fatliquor industry, in particular to a composite phosphate fatliquor containing non-ionic polyurethane and a preparation method thereof. Background technique [0002] Fatliquor is one of the most important chemical products in the leather production process. The leather treated with fatliquoring materials has a certain effect of lubricating the leather fiber due to the absorption of oil, preventing the hardening and cracking of the leather caused by dehydration, giving It guarantees the excellent physical and mechanical properties of leather such as elasticity, toughness, extensibility and softness. There are three main methods of fatliquing: direct fatliquoring, dipping fatliquoring and emulsion fatliquoring, among which emulsion fatliquoring is the most important method in actual production. [0003] The fatliquor emulsion is mainly composed of neutral oil and emulsifier. The initial fatliquor ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C9/02
Inventor 金勇樊宝珠漆锐程新峰
Owner CHENGDU ORGANIC CHEM CO LTD CHINESE ACAD OF SCI
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