Preparation method of nano titanium dioxide modified polyacrylate coating agent with core-shell structure

A nano-titanium dioxide and polyacrylate technology is applied in the field of leather chemicals to overcome poor stability, improve discoloration and aging, and achieve remarkable effects.

Inactive Publication Date: 2018-05-18
绍兴博凯科技信息咨询有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide the preparation method of nano-titanium dioxide modified polyacrylate coating agent with core-shell structure, to solve the deficiencies in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The preparation method of nano-titanium dioxide modified polyacrylate coating agent with core-shell structure comprises the following steps (each raw material is in parts by weight):

[0030] (1) First, add 9 parts of aluminum-zirconium coupling agent and 5 parts of nano-titanium dioxide to 60 parts of deionized water, stir at 58-62°C, and reflux for 30 minutes to make a nano-particle modified by aluminum-zirconium coupling agent. Titanium dioxide dispersion;

[0031] (2), add 50 parts of deionized water, 3 parts of dioctyl sulfosuccinate sodium salt, 3 parts of disodium fatty alcohol polyoxyethylene ether sulfosuccinate monoester, 2 parts of polyethylene oxide Alkyl sorbitol monofatty acid ester, 1 part of fatty alcohol polyoxyethylene ether AEO-7, 3 parts of ethyl acrylate, 2 parts of propyl acrylate, 10 parts of butyl acrylate, 2 parts of hydroxypropyl acrylate, 4 parts of methyl Methyl acrylate, 5 parts of propyl methacrylate and the nano-titanium dioxide dispersio...

Embodiment 2

[0037] The preparation method of nano-titanium dioxide modified polyacrylate coating agent with core-shell structure comprises the following steps (each raw material is in parts by weight):

[0038] (1) First, add 10 parts of aluminum-zirconium coupling agent and 6 parts of nano-titanium dioxide to 60 parts of deionized water, stir at 58-62 ° C, and reflux for 30 minutes to make nano-particles modified by aluminum-zirconium coupling agent. Titanium dioxide dispersion;

[0039](2), add 50 parts of deionized water, 4 parts of dioctyl sulfosuccinate sodium salt, 2 parts of disodium fatty alcohol polyoxyethylene ether sulfosuccinate monoester, 3 parts of polyethylene oxide into the reaction kettle Alkyl sorbitol monofatty acid ester, 2 parts fatty alcohol polyoxyethylene ether AEO-7, 3 parts propyl acrylate, 11 parts butyl acrylate, 2 parts octadecyl acrylate, 2 parts hydroxypropyl acrylate, 8 parts methyl Methyl methacrylate, 4 parts of propyl methacrylate and the nano-titanium ...

Embodiment 3

[0045] The preparation method of nano-titanium dioxide modified polyacrylate coating agent with core-shell structure comprises the following steps (each raw material is in parts by weight):

[0046] (1) First, add 10 parts of aluminum-zirconium coupling agent and 7 parts of nano-titanium dioxide to 60 parts of deionized water, stir at 58-62°C, and reflux for 30 minutes to make nano-particles modified by aluminum-zirconium coupling agent. Titanium dioxide dispersion;

[0047] (2), add 50 parts of deionized water, 5 parts of dioctyl sulfosuccinate sodium salt, 3 parts of disodium fatty alcohol polyoxyethylene ether sulfosuccinate monoester, 2 parts of polyethylene oxide Alkyl sorbitol monofatty acid ester, 3 parts of fatty alcohol polyoxyethylene ether AEO-7, 4 parts of ethyl acrylate, 4 parts of propyl acrylate, 12 parts of butyl acrylate, 3 parts of octadecyl acrylate, 2 parts of hydroxy acrylate Propyl ester, 4 parts of methyl methacrylate, 5 parts of propyl methacrylate and...

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PUM

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Abstract

The invention relates to a preparation method of a nano titanium dioxide modified polyacrylate coating agent with a core-shell structure. Firstly, an aluminum zirconium coupling agent and nano titanium dioxide are added to deionized water, and the mixture is stirred for a refluxing reaction for 30 min; deionized water, an emulsifier, an acrylate monomer and a nano titanium dioxide dispersion liquid are added to a reaction kettle, and the mixture is heated to 55-58 DEG C and stirred at a high speed to form an emulsified liquid; deionized water, the acrylate monomer and an emulsifier are added to an emulsification kettle and stirred at a high speed to form a pre-emulsified liquid; an initiator is dissolved in deionized water, and an initiator solution is prepared; after the temperature of the reaction kettle is increased to 65-68 DEG C, the initiator solution is added, and a thermal insulation reaction is performed for 1 h; the pre-emulsified liquid, crosslinking monomers and the remaining initiator water solution are dropwise added within 2 h, the mixture is subjected to a thermal insulation reaction at the temperature of 80 DEG C for 1 h after the pre-emulsified liquid, crosslinking monomers and the remaining initiator water solution are dropwise added, and cooling and filtration are performed.

Description

technical field [0001] The invention relates to a preparation method of a nano-titanium dioxide-modified polyacrylate finishing agent with a core-shell structure, and belongs to the field of leather chemicals. Background technique [0002] The purpose of leather finishing is to make the color of the leather uniform, improve and modify the defects on the leather surface, make the surface of the finished leather bright and beautiful, and enhance the durability of the leather. Polyacrylate emulsion and its coating film have better weather resistance, transparency, natural drying performance, and good gloss (not easy to turn yellow); especially have excellent adhesion, and occupy an important position in leather finishing agents, but their own The inherent disadvantages: poor water resistance, poor moisture permeability, low hardness of the coating film, "cold and brittle hot sticky", poor flexibility, etc., which greatly limit its application. [0003] Nano-titanium dioxide no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D151/00C09D7/62C08F220/18C08F220/20C08F220/14C08F265/04C08F222/14C08F2/44C08F2/26
CPCC08F2/26C08F2/44C08F220/18C08F220/1804C08F265/04C08K9/04C08K2003/2241C09D151/003C08F222/102C08F220/1803C08F220/1818C08F220/20C08F220/14
Inventor 缪百君
Owner 绍兴博凯科技信息咨询有限公司
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