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Preparation method of composite phosphate leather fatliquor without carbon-carbon unsaturated double bonds

A compound phosphate ester and leather fatliquor technology, which is applied in leather impregnation, small raw hide/big raw hide/leather/fur treatment, small raw hide/large raw hide/leather skin/fur chemical treatment, etc., to improve lubrication and improve Lightfast effect

Inactive Publication Date: 2015-10-28
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 existing problems of phosphate ester fatliquor, the purpose of this invention is to provide a kind of compound type phosphate ester leather fatliquor without carbon-carbon unsaturated double bond and its preparation method. Oxypropylene ether can effectively disperse P2O5, and then compound esterification with higher carbon alcohols

Method used

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  • Preparation method of composite phosphate leather fatliquor without carbon-carbon unsaturated double bonds
  • Preparation method of composite phosphate leather fatliquor without carbon-carbon unsaturated double bonds

Examples

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Effect test

Embodiment 1

[0026] 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; add the above-mentioned water to a four-necked bottle with a stirrer and a thermometer 23.5g of polyoxypropylene ether, under high-speed stirring, adopt the step-by-step feeding method, add 5g P2O5 to PPG in four times, each interval is 15min, after all the P2O5 is added, continue to stir and disperse for 30min; Add 11.4g of cetyl alcohol to the reaction vessel, raise the temperature to 60°C, and react for 4h; cool down to 50°C, add 1.3g of distilled water to the reaction vessel, and hydrolyze for 2h; weigh 3g of sodium hydroxide, add 27g of distilled water to prepare a mass concentration of 10% sodium hydroxide solution, cool down to 50°C, take 22g of the prepared lye and add it to the reaction container, adjust the pH of the reactant to about 7, and then continue to stir for 30min; add 39.9% dropwise to the rea...

Embodiment 2

[0028] 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; 47.0g of polyoxypropylene ether, under high-speed stirring, adopt the step-by-step feeding method, add 5g P2O5 to PPG in four times, each interval is 15min, after all the P2O5 is added, continue to stir and disperse for 30min; Add 12.7g of stearyl alcohol to the mixture, raise the temperature to 60°C, and react for 4h; cool down to 50°C, add 1.3g of distilled water to the reaction vessel, and hydrolyze for 2h; weigh 3g of sodium hydroxide, add 27g of distilled water to prepare a mass concentration of 10% sodium hydroxide solution, cool down to 50°C, take 22g of the prepared lye and add it to the reaction container, adjust the pH of the reactant to about 7, and then continue to stir for 30 minutes; add 43.1 drops to the reaction container under high-speed stirring g of distilled water, and continue to stir for 30...

Embodiment 3

[0030]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; add the above-mentioned water to a four-necked bottle with a stirrer and a thermometer 35.2g of polyoxypropylene ether, under high-speed stirring, adopt the step-by-step feeding method, add 5g P2O5 to PPG in four times, each interval is 15min, after all the P2O5 is added, continue to stir and disperse for 30min; Add 9.5g of stearyl alcohol to the reaction vessel, raise the temperature to 60°C, and react for 4h; cool down to 50°C, add 1.3g of distilled water to the reaction vessel, and hydrolyze for 2h; weigh 3g of sodium hydroxide, add 27g of distilled water to prepare a mass concentration of 10% sodium hydroxide solution, lower the temperature to 50°C, take 22g of the prepared lye and add it to the reaction container, adjust the pH of the reactant to about 7, and then continue to stir for 30 minutes; add 21.3 dro...

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Abstract

The invention relates to a preparation method of composite phosphate leather fatliquor without carbon-carbon unsaturated double bonds. The preparation method is characterized in that a phosphorylated hydroxyl substrate of the composite phosphate fatliquor is composed of polyoxypropylene ether and high alcohol. The polyoxypropylene ether is in a liquid state at normal temperature. P2O5 can be effectively dispersed, various defects caused when the P2O5 absorbs moisture and cakes during a phosphorylation reaction are prevented, and adding of organic solvents is eradicated. The fatliquor composited mainly through the polyoxypropylene ether is low in solidifying point and can well permeate into leather fibers. The fatliquor is combined with the high alcohol, a good fatliquoring effect is achieved, the oil spill phenomenon can be effectively avoided, and meanwhile leather can have a certain waterproof effect. Because the hydroxyl substrate used by the composite phosphate leather fatliquor does not contain the carbon-carbon unsaturated double bonds, it is guaranteed that the obtained composite phosphate fatliquor has good stability, oxidation resistance and light resistance.

Description

technical field [0001] The invention relates to the field of leather industry fatliquor, in particular to a preparation method of a composite phosphate ester leather fatliquor without carbon-carbon unsaturated double bonds. Background technique [0002] Fatliquor is one of the important leather chemicals in the process of tanning. It can not only lubricate the leather fiber, prevent the hardening and cracking of the leather due to dehydration, but also make the leather have certain elasticity, toughness, extensibility and softness. Excellent physical and mechanical properties. Leather fatliquors are mainly composed of neutral oils and emulsifiers. Initially, the synthetic method of fatliquoring agent is mainly formed by emulsifying neutral oil with external surfactant. The external emulsification system fatliquoring agent formed in this way has poor stability and application performance. At present, most of the fatliquor is a leather fatliquoring agent of a self-emulsifyin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C9/02
CPCC14C9/02
Inventor 金勇樊宝珠彭绍军孙同兵
Owner CHENGDU ORGANIC CHEM CO LTD CHINESE ACAD OF SCI
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