Silicone emulsion for surface smooth treatment of synthetic leather and artificial leather and preparation method thereof

A silicone emulsion, surface smooth technology, applied in fiber treatment, textile and papermaking, improved hand fiber, etc., can solve the problems of demulsification, poor leather adhesion, oil spots on the finished leather surface, etc., to achieve stability Good, good printability and strong adhesion

Active Publication Date: 2021-09-24
ZHEJIANG SUNLIGHT MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] (1) The particle size of hydroxyl and methyl silicone oil emulsion is large, and the printing property is poor;
[0004] (2) The existing hydroxy silicone oil, methyl silicone oil and amino silicone oil will cause demulsification due to the extrusion of the blade and the roller during the printing process, causing oil spots to appear on the final finished leather surface;
[0005] (3) The adhesion of hydroxyl silicone oil and methyl silicone oil emulsion to leather is poor, and the hand feel is weak

Method used

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  • Silicone emulsion for surface smooth treatment of synthetic leather and artificial leather and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Carboxylic silicone oil crude oil preparation:

[0029] Mix and polycondense octamethylcyclotetrasiloxane, hexamethyldisiloxane, carboxysilane coupling agent and acidic cation exchange resin in a container, the mass ratios are 4000:15:250:1 respectively, the polycondensation reaction The temperature was 120°C and the reaction time was 4 hours. After distillation under reduced pressure, the desired carboxyl silicone oil crude oil was obtained. In this embodiment, the general formula of the carboxysilane coupling agent used is Si-PEG-COOH, specifically (OMe)3Si(CH2)2NHCONH(CH2)2(EO)mCOOH, wherein m≥3.

[0030] Carboxylic silicone oil emulsion preparation:

[0031] Put the prepared carboxy silicone oil crude oil, fatty alcohol polyoxyethylene ether and water into the container, and the mass ratio is 32:4:64 respectively, and carry out mechanical stirring and emulsification at room temperature, the stirring speed is 1000r / min, and the stirring time is 1 hour. A transpare...

Embodiment 2

[0036] Carboxylic silicone oil crude oil preparation:

[0037] Mix and polycondense octamethylcyclotetrasiloxane, hexamethyldisiloxane, carboxysilane coupling agent and acidic cation exchange resin in a container, the mass ratios are 3500:20:250:1 respectively, the polycondensation reaction The temperature was 120°C and the reaction time was 4 hours. After distillation under reduced pressure, the desired carboxyl silicone oil crude oil was obtained. In this embodiment, the general formula of the carboxysilane coupling agent used is Si-PEG-COOH, specifically (OMe)3Si(CH2)2NHCONH(CH2)2(EO)mCOOH, wherein m≥3.

[0038] Carboxylic silicone oil emulsion preparation:

[0039] Add the prepared carboxy silicone oil crude oil, fatty alcohol polyoxyethylene ether and water into the container, and the mass ratio is 33:3:64 respectively, and carry out mechanical stirring and emulsification at room temperature, the stirring speed is 1000r / min, and the stirring time is 1 hour. A transpare...

Embodiment 3

[0044] Carboxylic silicone oil crude oil preparation:

[0045] Mix and polycondense octamethylcyclotetrasiloxane, hexamethylsiloxane, carboxysilane coupling agent and acidic cation exchange resin in a container, the mass ratios are 4500:10:150:1 respectively, the reaction temperature of polycondensation The temperature was 120°C, and the reaction time was 4 hours. After distillation under reduced pressure, the desired carboxyl silicone oil crude oil is obtained. In this embodiment, the general formula of the carboxysilane coupling agent used is Si-PEG-COOH, specifically (OEt)3Si(CH2)2NHCONH(CH2)2(EO)mCOOH, wherein m≥3.

[0046] Carboxylic silicone oil emulsion preparation:

[0047] Put the prepared carboxy silicone oil crude oil, fatty alcohol polyoxyethylene ether and water into the container, the mass ratios are 35:7:58 respectively, carry out mechanical stirring and emulsification at room temperature, the stirring speed is 1000r / min, and the stirring time is 1 hour. A tr...

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Abstract

The invention discloses a silicone emulsion used for the smooth treatment of the surface of synthetic leather and artificial leather and a preparation method thereof. The silicone emulsion comprises the following components in mass ratio: carboxyl silicone oil crude oil: emulsifier: water is 30-35 : 2-8: 50-65; Wherein, the carboxyl silicone oil crude oil is formed by polycondensation reaction from a dimethylsiloxane mixed ring body, a capping agent, a carboxyl silane coupling agent and a catalyst. The water-based organic silicon emulsion prepared by the invention and applied to the surface of synthetic leather and artificial leather has good adhesion to the surface of artificial leather and a high degree of hand feeling retention after kneading; and the preparation process is simple, and the obtained emulsion has a fine particle size and is not bleached during the printing process. Oil, good stability.

Description

technical field [0001] The invention relates to an organic silicon emulsion and a preparation method thereof, in particular to an organic silicon emulsion used for smoothing the surface of synthetic leather and artificial leather and a preparation method thereof. Background technique [0002] At present, hydroxy silicone oil, methyl silicone oil and amino silicone oil emulsion are mostly used as surface treatment agents for slippery treatment, but their main defects are: [0003] (1) The particle size of hydroxyl and methyl silicone oil emulsion is large, and the printing property is poor; [0004] (2) The existing hydroxy silicone oil, methyl silicone oil and amino silicone oil will cause demulsification due to the extrusion of the blade and the roller during the printing process, causing oil spots to appear on the final finished leather surface; [0005] (3) The adhesion of hydroxy silicone oil and methyl silicone oil emulsion to leather is poor, and the hand feeling rete...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/03C08G77/14D06M15/643C08L83/06
CPCC08J3/03C08G77/46C08G77/14D06M15/647D06M15/6433C08J2383/12D06M2200/50
Inventor 方伟毛增华赵叶军
Owner ZHEJIANG SUNLIGHT MATERIAL TECH CO LTD
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