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Styrene-acrylate aqueous dispersoid with amphiphilic structure and preparation method thereof

An acrylate and acrylate technology, applied in the field of polymer material preparation, can solve the problems of poor dryness, high viscosity and low solid content, and achieve the effects of simple preparation process, small equipment investment and high solid content

Inactive Publication Date: 2012-12-26
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The above-mentioned traditional solution polymerization produces a resin with high gloss and high transparency, but there are generally defects such as poor dryness, low solid content (generally below 40%), and high viscosity.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1.0g of reactive emulsifier (SR-10), 38.0g of styrene, 22.0g of α-methylstyrene, 18.0g of acrylic acid, 22.0g of methyl methacrylate, 2.0g of benzoyl peroxide, lauryl sulfur Mix 1.0g of alcohol, stir evenly, and prepare combination A; then dissolve 0.5g of benzoyl peroxide in 5.0g n-butanol to prepare combination B; then add 30.0g n-butanol into the polymerization reactor and heat up To 100°C, add 10.0g combination A, react for 30 minutes, add the remaining combination A dropwise, after 4 hours drop, keep warm for 2 hours, then add combination B dropwise, keep warm for 2 hours; then suction filter, recover part of the solvent and unused Reaction of monomers; finally lower the temperature to below 40°C, add 20.2g of triethylamine to the polymerization reactor for neutralization, and disperse the reaction product with water to obtain a styrene-acrylate water dispersion with an amphiphilic structure . The properties of the obtained styrene-acrylate aqueous dispersion with...

Embodiment 2

[0033] 10.0g of reactive emulsifier (SR-10), 34.0g of styrene, 26.0g of α-methylstyrene, 12.0g of acrylic acid, 28.0g of methyl methacrylate, 2.0g of benzoyl peroxide, lauryl sulfur Mix 1.0g of alcohol, stir evenly, and prepare combination A; then dissolve 0.5g of benzoyl peroxide in 5.0g of dioxane to prepare combination B; then add 50.0g of dioxane into the polymerization reactor , heat up to 100°C, add 20.0g combination A, react for 30 minutes, add the remaining combination A dropwise, after 4 hours drop, keep warm for 2 hours, then add combination B dropwise, keep warm for 2 hours; then suction filter, recover part of the solvent and unreacted monomers; finally lower the temperature to below 40°C, add 13.5g triethylamine to the polymerization reactor for neutralization, and disperse the reaction product with water to obtain styrene-acrylate water with amphiphilic structure Dispersions. The properties of the obtained styrene-acrylate aqueous dispersion with amphiphilic str...

Embodiment 3

[0036] 1.0g of reactive emulsifier (COPS-1), 27.0g of styrene, 27.0g of α-methylstyrene, 18.0g of methacrylic acid, 25.0g of methyl methacrylate, 3.0g of hydroxyethyl acrylate, peroxide Mix 1.5g of benzoyl and 0.5g of mercaptoethanol, stir evenly, and prepare combination A; then dissolve 0.3g of benzoyl peroxide in 3.0g of n-propanol to prepare combination B; then mix 50.0g of n-propanol Put it into a polymerization reactor, raise the temperature to 90°C, add 10.0g of combination A, and after 40 minutes of reaction, add the remaining combination A dropwise. Filter to recover part of the solvent and unreacted monomers; finally lower the temperature to below 40°C, add 23.4g of ammonia water to the polymerization reactor for neutralization, and disperse the reaction product with water to obtain styrene- Aqueous acrylate dispersion. The properties of the obtained styrene-acrylate aqueous dispersion with amphiphilic structure are shown in Table 1.

[0037] The reactive emulsifier...

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PUM

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Abstract

The invention discloses a styrene-acrylate aqueous dispersoid with an amphiphilic structure and a preparation method thereof. The preparation method comprises the following steps of: mixing 1-10 parts of reactive emulsifying agent, 14-38 parts of styrene, 12-32 parts of alpha-methyl styrene, 40-60 parts of acrylate monomer, 1-2 parts of initiator and 0-1 part of chain transfer agent, and preparing into a composition A; dissolving 0.2-0.5 part of initiator in 2-5 parts of solvent, and preparing into a composition B; adding 30-50 parts of solvent into a reaction kettle, rising the temperature to 80-100 DEG C, firstly adding 10-20 parts of composition A, reacting for 20-40 minutes, then dropping the remaining amount of the composition A, and then adding the composition B; and adding 13.5-20.2 parts of amine substances into the reaction kettle for carrying out neutralization, dispersing reaction products with water and obtaining the styrene-acrylate aqueous dispersoid. The styrene-acrylate aqueous dispersoid prepared by the invention has the characteristics of high solid content, low viscosity, fast drying, excellent storage stability and the like, the process is simple, and the safety and the energy conservation are achieved.

Description

technical field [0001] The invention relates to the field of polymer material preparation, in particular to a styrene-acrylate aqueous dispersion with an amphiphilic structure and a preparation method thereof. Background technique [0002] At present, the most widely used styrene-acrylate in China is solvent-type styrene-acrylate, that is, in the presence of an organic solvent, styrene and acrylate monomers are copolymerized into a styrene-acrylate solution through solution polymerization. Then it is directly supplied to paint, ink and other manufacturers in the form of organic solution. However, this styrene-acrylate product contains a large amount of organic solvents, which are generally flammable and toxic, seriously pollute the environment, and even endanger human health. [0003] With the improvement of people's awareness of environmental protection and the gradual improvement of laws and regulations, the water-based resin is the current development trend. The common ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/03C08F220/14C08F220/06C08F220/28C08F220/18C08F212/08C08F212/12C08F2/24C08F2/38
Inventor 涂伟萍王杨勇王锋胡剑青
Owner SOUTH CHINA UNIV OF TECH
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