Water-based polyacrylate emulsion and preparation method thereof

A technology of polyacrylate emulsion and ethyl acrylate, which is applied in the direction of coating, etc., can solve the problems of affecting the normal progress of polymerization reaction, increasing compounding and application function problems, insufficient mechanical and calcium particle stability, etc.

Active Publication Date: 2017-06-13
HANGZHOU TRANSFAR FINE CHEM CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still some problems in the actual application process, especially compared with similar foreign products, there is still a considerable gap, such as low solid content, insufficient mechanical and calcium particle stability, poor water and wet rubbing resistance, etc.
[0003] At present, energy saving, emission reduction and green environmental protection are required for development, and high-solid multifunctional water-based polyacrylate resin conforms to this trend, which can reduce energy consumption, storage and transportation and simplify the production process, which requires the product to be multi-functional and compatible Good, adaptable to a variety of processes, easy to adjust a variety of properties; when the solid content of the emulsion is ≥ 55% in conventional emulsion polymerization, the viscosity of the emulsion system will be high, which not only seriously affects the next step of practical application and performance adjustment, but also may Affect the normal progress of the polymerization reaction; the viscosity of the emulsion system can be reduced by reducing the emulsifier and increasing the particle size in the emulsion polymerization, but the side effects are that the chemical, mechanical and storage stability of the emulsion deteriorates, and the compounding and application function problems increase, resulting in many problems such as poor film-forming properties and bonding fastness
[0004] After literature search, it is found that there are many patents and research papers on the preparation of polyacrylate emulsions, but there are few literatures on large particle size, low viscosity, high solid aqueous polyacrylate emulsions that meet various stability and application requirements. There are reports

Method used

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  • Water-based polyacrylate emulsion and preparation method thereof
  • Water-based polyacrylate emulsion and preparation method thereof
  • Water-based polyacrylate emulsion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Lotion composition:

[0024]

[0025]

[0026] Preparation method: after dissolving 98% alkyl alcohol polyoxyethylene ammonium sulfate and dibutyl sulfosuccinate sodium salt, isomeric alcohol polyoxyethylene ether (8-12EO) in 60% deionized water, under stirring Add butyl acrylate, ethyl acrylate, styrene, methyl methacrylate, acrylonitrile, acrylic acid, N-methylol acrylamide, sodium allyloxy hydroxypropyl sulfonate, stir and emulsify for 10-20 minutes, then Emulsify and disperse with a high-shear dispersing emulsifier for 10 minutes to obtain a uniform and stable pre-emulsion.

[0027] Add sodium bicarbonate and a small amount of remaining compound emulsifier, and most of the remaining deionized water into a four-necked flask equipped with a stirrer, a reflux condenser, a dropping funnel, and a thermometer, and stir, then take 2.5% of the pre-emulsion Add to the reaction bottle; heat and stir, add redox initiator hydrosulfite, ferrous sulfate and 15% ammonium pe...

Embodiment 2

[0029] Lotion composition:

[0030]

[0031] Preparation method: After dissolving sodium alkyl diphenyl ether disulfonate and isomeric secondary alcohol polyoxyethylene ether (8-12EO) in 1 / 2 deionized water, add isooctyl acrylate, ethyl acrylate, Styrene, methyl methacrylate, acrylonitrile, itaconic acid, acrylamide, hydroxypropyl methacrylate, hydroxypropyl methacrylate, stirred and emulsified for 15 minutes, and then emulsified and dispersed by a high-shear dispersing emulsifier for 12 minutes , to obtain a uniform and stable pre-emulsion.

[0032] Sodium bicarbonate and most of the remaining deionized water are added to a four-necked flask equipped with a stirrer, a reflux condenser, a dropping funnel, and a thermometer and stirred, then 2% pre-emulsion is added to the reaction flask; heated and stirred, Add redox initiator hydrosulfite, ferrous sulfate and 15% ammonium persulfate at a temperature of 25-30°C to initiate a polymerization reaction to obtain a seed emulsio...

Embodiment 3

[0034] Lotion composition:

[0035]

[0036] Preparation method: After dissolving 95% isomeric alcohol polyoxyethylene ether (40EO) and ethoxylated alkyl alcohol ether sulfosuccinic acid half ester disodium salt in 55% deionized water, add butyl acrylate under stirring Ester, ethyl acrylate, glycidyl methacrylate, methyl methacrylate, acrylonitrile, acrylic acid, acrylamide, sodium hydroxypropyl methacrylate, stirred and emulsified for 20 minutes, and then emulsified by a high-shear dispersing emulsifier Disperse for 10 minutes to obtain a uniform and stable pre-emulsion.

[0037] Add sodium bicarbonate and a small amount of remaining compound emulsifier, and most of the remaining deionized water into a four-necked flask equipped with a stirrer, a reflux condenser, a dropping funnel, and a thermometer, and stir, then take 3% of the pre-emulsion Add to the reaction bottle; heat and stir, add redox initiator sodium powder, ferrous sulfate and 10% ammonium persulfate at a tempe...

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Abstract

The invention discloses a water-based polyacrylate emulsion and a preparation method thereof. At present, literatures about a large-particle diameter, low-viscosity and high-solid content water-based polyacrylate emulsion meeting various stability and application requirements at the same time are rarely reported. The large-particle diameter, high-solid content and low-viscosity water-based polyacrylate emulsion is prepared from one or more of butyl acrylate, ethyl acrylate and isooctyl acrylate as a soft monomer, one or more of methyl methacrylate, styrene, methyl acrylate and acrylonitrile as a hard monomer, one or more of methacrylic acid, acrylic acid, itaconic acid, acrylamide, hydroxyethyl methacrylate, hydroxypropyl methacrylate, glycidyl methacrylate and N-methacrylamide as a functional monomer, a composite emulsifier and a reactive emulsifier for building an emulsifying system, and a redox system initiator as an initiator through high-shear preemulsification and seed emulsion polymerization.

Description

technical field [0001] The invention relates to a polymer emulsion, in particular to a water-based polyacrylate emulsion with large particle size, high solid content and low viscosity and a preparation method thereof. Background technique [0002] Water-based polyacrylate is an emulsion mainly copolymerized with acrylate monomers. Adhesives and coatings formulated with it as the main film-forming substance are non-toxic, non-environmental polluting, and have good weather resistance and color retention. , water resistance, alkali resistance, my country has been put into use since the 1970s and 1980s, and is currently widely used in textiles, papermaking, coatings, packaging, leather and other fields. However, there are still some problems in the actual application process, especially compared with similar foreign products, there is still a considerable gap, such as low solid content, insufficient mechanical and calcium particle stability, poor water and wet rubbing resistance,...

Claims

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Application Information

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IPC IPC(8): C08F220/18C08F212/10C08F220/14C08F220/46C08F220/06C08F220/58C08F216/14C08F2/26C08F2/30C09D133/08C08F283/06C08F222/02C08F220/56C08F220/28C09D151/08C08F220/32C08F4/40
CPCC09D133/08C09D151/08C08F2/26C08F2/30C08F4/40C08F220/18C08F283/065C08F220/1804C08F220/14C08F220/46C08F220/06C08F220/56C08F220/325C08F216/1475C08F220/1802C08F212/10C08F220/58
Inventor 瞿少敏包杰界周坚齐平平缪宇龙
Owner HANGZHOU TRANSFAR FINE CHEM CO LTD
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