CN103045773B

CN103045773B - Environment-friendly surface active agent for tanning

Info

Publication number: CN103045773B
Application number: CN201210586567.2A
Authority: CN
Inventors: 刘四华; 金硕; 王永峰
Original assignee: TANGPULE CHEMICAL DYE (JIAXING) CO Ltd
Current assignee: Thompler New Materials Jiaxing Co., Ltd.
Priority date: 2012-12-28
Filing date: 2012-12-28
Publication date: 2015-04-08
Anticipated expiration: 2032-12-28
Also published as: CN103045773A

Abstract

The invention relates to the fields of leather processing and materials and relates to an environment-friendly surface active agent for tanning. The surface active agent comprises the active constituents of sucrose fatty ester and alkyl glycoside, wherein the mass ratio of sucrose fatty ester to all C8-C14 fatty alcohol in alkyl glycoside is 1 : (0.25-0.4). The surface active agent prepared by compounding sucrose fatty ester and alkyl glycoside can be used for conditioning, degreasing and other procedures for tanning and is environmental-friendly, easy to degrade and simple to prepare.

Description

A kind of environment-friendly type process hides tensio-active agent

Technical field

The present invention relates to leather processing field and Material Field, be specially a kind of environment-friendly type process hides tensio-active agent and preparation method thereof.

Background technology

Degreasing is one of requisite operation in process hides processing, and degreasing Main Function is by the grease removing in epidermis face and sebiferous gland.The quality of degreasing effect, is directly connected to the effect of tanning, dyeing, stuffing etc.; The effect of degreasing is also very large to leather goods quality influence, if the effect of degreasing is bad, can cause that finished leather feel is stiff, surface oil soapy feeling is strong, coating easily comes off the defects such as slurry.

The tensio-active agent of process hides includes aniorfic surfactant, cationic surfactant, nonionic surface active agent and amphoteric surfactant.

The tensio-active agent of process hides, the body lotion environment of use is comparatively complicated, therefore requires acid and alkali-resistance, resistance to hard water and electrolyte-resistant.Meet these tensio-active agent kinds required few, quantity is single, and some tensio-active agents used for a long time, as sodium laurylsulfonate, NEPs(nonylphenol polyoxyethylene ether sulfate) etc. because the reason such as environmental pollution, difficult degradation, use day by day restricted, or be prohibited from using.

Nonionic surface active agent is given prominence to due to degreasing effect, and be suitable for PH wide ranges etc., biodegradable degree high, in process hides tensio-active agent, development rapidly.

Gentle, efficient, eco-friendly direction is the trend of leather degreased surface promoting agent development.But the surfactant product exploitation dynamics of efficient, high biochemical degradation degree is not enough at present, therefore needs to optimize compounded technology, is improved prior art, obtain the process hides tensio-active agent of environment-friendly type height biochemical degradation degree.

Summary of the invention

The object of the present invention is to provide a kind of process hides tensio-active agent and preparation method thereof of environment-friendly type height biochemical degradation degree.

A process hides tensio-active agent for environment-friendly type height biochemical degradation degree, its active ingredient comprises sucrose fatty ester, alkyl glycoside; During viscosity number >=the 150mPas(25 DEG C of described process hides tensio-active agent) (being generally 150 ~ 3000).Wherein in sucrose fatty ester and alkyl glycoside, the mass ratio of C8 ~ C14 fatty alcohol total amount is 1:0.5 ~ 0.8, and preferred 1:0.55 ~ 0.7, is more preferably 1:0.6 ~ 0.65.

Preferably, alkyl glycoside is the mixture of C8, C10, C12 and C14 alcohol, and wherein, C8, C10, C12 and C14 alcohol mass ratio is 1:0.5 ~ 2:1 ~ 3:0.2 ~ 1; Be preferably 1:1 ~ 1.5:1.2 ~ 2:0.4 ~ 0.75;

Preparation method of the present invention is, sucrose fatty ester and alkyl glycoside is mixed in proportion, adds 0.1wt% ~ 2wt% salts solution and alkylolamide adjusting viscosity value.The addition of salts solution is the 4wt% ~ 6wt% of mixing rear surface total surfactant weight, and the addition of alkylolamide is the 1.6wt% ~ 2.5wt% of mixing rear surface total surfactant weight.

By method of the present invention, composite sucrose fatty ester and alkylglycoside and obtained tensio-active agent can be used for the operation such as rewetting, degreasing of process hides.This tensio-active agent hydrophilic-lipophilic balance is effective, and use in process hides degreasing process, degreasing is thorough; And this tensio-active agent is environmentally friendly, easily degrades, preparation is simple.

Embodiment

Embodiment 1

1) first synthetic fat acetoacetic ester:

CH ₃(CH ₂) ₁₆COOH+CH ₃CH ₂OH→CH ₃(CH ₂) ₁₆COOC ₂H ₅

2) carry out transesterify with sucrose and fatty-acid ethyl ester again, generate sucrose fatty ester

CH ₃(CH ₂) ₁₆COOC ₂H ₅+C ₁₂H ₂₂O ₁₁→C ₃₀H ₅₆O ₁₂

The structural formula of sucrose fatty ester is:

3) by synthesized sucrose fatty ester 25kg and 30kg industry alkylglycoside APG-0814(wherein C8, C10, C12 and C14 alcohol total content is 50%, mass ratio is 1:1.5:1.8:0.7) mixing, add 2.8kg0.2wt%NaCl solution and 1.2kg lauric acid amide of ethanol (alkylolamide 6501) again, mixture viscosity is adjusted to >=150mpas.

Embodiment 2

Step 1) and 2) with embodiment 1;

3) by synthesized sucrose fatty ester 25kg and 32kg industry alkylglycoside APG-0814(wherein C8, C10, C12 and C14 alcohol total content is 50%, mass ratio is 1:1:1.5:0.5) mixing, then add 3kg0.3%Na ₂sO ₄solution and 1.5kg oleic acid diethyl amide, be adjusted to>=150mpas by mixture viscosity.

Embodiment 3

Step 1) and 2) with embodiment 1;

3) by synthesized sucrose fatty ester 24kg and 30kg industry alkylglycoside APG-0814(wherein C8, C10, C12 and C14 alcohol total content is 50%, mass ratio is 1:1.25:2:0.75) mixing, add 2.9kg0.2%NaCl solution and 1.1kg Stearic acid diethanolamine salt again, mixture viscosity is adjusted to >=150mpas.

Embodiment 4

Example 1 ~ 3 product detects, and its hydrophile-lipophile balance value is 9 ~ 18.

For the addition of the degreasing process of process hides processing 2% time, residual oil quality mark is less than 2%, and can improve rewetting effect.

Above-mentioned tensio-active agent is when the independent degreasing for process hides processing, and addition is 2% time, and the biochemical degradation degree of 30 days reaches more than 90%, and the biochemical degradation degree of 90 days reaches more than 95%.

Claims

1. the application of tensio-active agent in process hides, is characterized in that, described tensio-active agent is prepared by the following method:

Sucrose fatty ester and alkyl glycoside are mixed in proportion, adding concentration is 0.1% ~ 2% salts solution and alkylolamide, is viscosity number >=150mPas at 25 DEG C by viscosity adjustment; Wherein in sucrose fatty ester and alkyl glycoside, the mass ratio of C8 ~ C14 fatty alcohol total amount is 1:0.5 ~ 0.8; Described alkyl glycoside is the mixture of C8, C10, C12 and C14 alcohol; Wherein, C8, C10, C12 and C14 alcohol mass ratio is 1:0.5 ~ 2:1 ~ 3:0.2 ~ 1;

The addition of salts solution is the 4wt% ~ 6wt% of mixing rear surface total surfactant weight, and the addition of alkylolamide is the 1.6wt% ~ 2.5wt% of mixing rear surface total surfactant weight; Described salt is sodium salt or sylvite;

Described alkylolamide is the condenses of lauric acid, cocinic acid, laurostearic acid, TETRADECONIC ACID, stearic acid or oleic acid and Monoethanolamine MEA BASF or diethanolamine.

2. application according to claim 1, is characterized in that, in sucrose fatty ester and alkyl glycoside, the mass ratio of C8 ~ C14 fatty alcohol total amount is 1:0.55 ~ 0.7.

3. application according to claim 1, is characterized in that, in sucrose fatty ester and alkyl glycoside, the mass ratio of C8 ~ C14 fatty alcohol total amount is 1:0.6 ~ 0.65.

4. application according to claim 1, is characterized in that, C8, C10, C12 and C14 alcohol mass ratio is 1:0.1 ~ 1.5:1.2 ~ 2:0.4 ~ 0.75.