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Light protective type finishing wax for leather surface and preparation method thereof

A leather and finishing technology, applied in the direction of coating, wax coating, etc., can solve the problems of short shelf life, high production cost, poor emulsion stability, etc., and achieve the effect of improving surface tension, good emulsification, and good stability

Inactive Publication Date: 2019-02-01
WENZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the emulsifying waxes currently produced use anionic surfactants or nonionic surfactants or fatty acid soaps as emulsifiers under alkaline conditions. The disadvantages of this method are: the amount of emulsifier is large and the emulsion is stable. The emulsified wax is generally processed by colloid mill to improve stability, and the production process is complicated, the technology is too difficult to master, and the production cost is too high
In the prior art, the Chinese patent application number CN201610294694.3 is a high-stability wax emulsion for leather product finishing agent and its preparation method. Well, the shelf life is one year; but the one-year shelf life is still short, which limits the development of emulsified wax. At the same time, the wax emulsion will delaminate or precipitate at a speed of 3500r / min, and it is still not stable enough

Method used

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  • Light protective type finishing wax for leather surface and preparation method thereof
  • Light protective type finishing wax for leather surface and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1: a kind of leather surface gloss-retaining type finishing wax, comprises the following material composition of parts by weight:

[0033] 30 parts carnauba wax;

[0034] 0 parts of rice bran wax;

[0035] 2 parts of lipophilic emulsifier;

[0036] 8 parts of hydrophilic emulsifier;

[0037] 0.6 parts of co-emulsifier;

[0038] 80 parts of deionized water;

[0039] 1.2 parts of wetting agent;

[0040] Regulator 0.3 parts;

[0041] 1.5 parts of stabilizer;

[0042] The lipophilic emulsifier is a mixture of fatty alcohol polyoxyethylene (3) ether and sorbitan monooleate, and its mass ratio is 1:1; the hydrophilic emulsifier is fatty alcohol polyoxyethylene (25) A mixture of ether and polyoxyethylene sorbitan monooleate, the mass of which is 1:7.

[0043] The co-emulsifier is oleic acid.

[0044] The regulator is triethanolamine.

[0045] The stabilizer is (1R,2R)-(-)-N-(p-toluenesulfonyl)-1,2-diphenylethylenediamine, trimethylsilyl 2-(fluorosulfonyl)d...

Embodiment 2

[0052] Embodiment 2: a kind of leather surface gloss-retaining type finishing wax, comprises the following material composition of parts by weight:

[0053] 40 parts carnauba wax;

[0054] 0 parts of rice bran wax;

[0055] 3 parts of lipophilic emulsifier;

[0056] 9 parts of hydrophilic emulsifier;

[0057] 0.8 parts of co-emulsifier;

[0058] 90 parts of deionized water;

[0059] 1.6 parts of wetting agent;

[0060] Regulator 0.4 parts;

[0061] 2 parts of stabilizer;

[0062] The lipophilic emulsifier is a mixture of fatty alcohol polyoxyethylene (3) ether and sorbitan monooleate, and its mass ratio is 1:1; the hydrophilic emulsifier is fatty alcohol polyoxyethylene (25) A mixture of ether and polyoxyethylene sorbitan monooleate, the mass of which is 1:7.

[0063] The co-emulsifier is oleic acid.

[0064] The regulator is triethanolamine.

[0065] The stabilizer is (1R,2R)-(-)-N-(p-toluenesulfonyl)-1,2-diphenylethylenediamine, trimethylsilyl 2-(fluorosulfonyl)di ...

Embodiment 3

[0072] Embodiment three: a kind of leather surface gloss-retaining type finishing wax, comprises the following material composition of parts by weight:

[0073] 25 parts carnauba wax;

[0074] 2 parts rice bran wax;

[0075] 1.5 parts of lipophilic emulsifier;

[0076] 6 parts of hydrophilic emulsifier;

[0077] 0.5 parts of co-emulsifier;

[0078] 75 parts of deionized water;

[0079] 1 part of wetting agent;

[0080] Regulator 0.2 parts;

[0081] 1 part of stabilizer;

[0082] The lipophilic emulsifier is a mixture of fatty alcohol polyoxyethylene (3) ether and sorbitan monooleate, and its mass ratio is 1:1; the hydrophilic emulsifier is fatty alcohol polyoxyethylene (25) A mixture of ether and polyoxyethylene sorbitan monooleate, the mass of which is 1:7.

[0083] The co-emulsifier is oleic acid.

[0084] The regulator is triethanolamine.

[0085] The stabilizer is (1R,2R)-(-)-N-(p-toluenesulfonyl)-1,2-diphenylethylenediamine, trimethylsilyl 2-(fluorosulfonyl)di ...

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Abstract

The invention discloses a light protective type finishing wax for leather surface and a preparation method thereof; the finishing wax is prepared with Brazil palm wax and rice bran wax as raw materials by a water-in-wax emulsification method; at the same time, a lipophilic emulsifier, a hydrophilic emulsifier, a co-emulsifier, deionized water, a wetting agent, a regulator and a stabilizer are added; as the key, the lipophilic emulsifier and the hydrophilic emulsifier are simultaneously chosen on the selection of the emulsifiers, wherein the hydrophilic emulsifier is a mixture of fatty alcoholpolyoxyethylene (3) ether and sorbitol monooleate, while the hydrophilic emulsifier is selected from a mixture of fatty alcohol polyoxyethylene (25) ether and polyoxyethylene sorbitol monooleate. Thefinally prepared emulsified wax can be placed at room temperature of 25 DEG C for 2 years without stratification or precipitation, can resist low temperature and high temperature, acid and alkali, andhas high stability and long shelf life. The finishing wax can be used as a leather surface finishing auxiliary agent.

Description

technical field [0001] The invention relates to the technical field of leather surface finishing, in particular to a leather surface gloss-preserving finishing wax and a preparation method thereof. Background technique [0002] Emulsifying wax is a kind of homogeneous fluid containing wax and water made under the action of external mechanical force by dispersing various waxes including petroleum wax evenly in water, with the help of directional adsorption of emulsifier. In the production process, water is used as a solvent to replace conventional organic solvents, which reduces the harm to the environment, and at the same time greatly reduces the cost of wax products and expands its application fields; emulsified wax is used in leather surface finishing, water-based paint, It is widely used in fields such as wood-based panels and metal protection. [0003] Most of the emulsifying waxes currently produced use anionic surfactants or nonionic surfactants or fatty acid soaps as...

Claims

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Application Information

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IPC IPC(8): C09D191/06C09D7/65C09D7/63
CPCC08L2205/025C09D7/63C09D7/65C09D191/06C08L91/06C08L71/02C08K5/09C08K5/17
Inventor 柴玉叶蒋君芝杨瑾柴玉枝
Owner WENZHOU UNIVERSITY
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