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Acrylate emulsion, preparation method and application thereof

An acrylate and emulsion technology, applied in latex paints, coatings, etc., can solve problems affecting scrub resistance, limited improvement of latex paint scrub resistance, affecting polymer adhesion, water resistance, freeze-thaw stability, etc.

Active Publication Date: 2019-05-14
WANHUA CHEMICAL (NINGBO) CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the improvement of the scrub resistance of the latex paint by increasing the adhesion function monomer is limited or the addition amount is large, which increases the formulation cost of the latex paint; although the swelled part of the styrene monomer improves the freeze-thaw stability obviously, but styrene is relatively low. Hydrophobic, while the film-forming aid in latex paint is hydrophilic, which will affect the diffusion and swelling efficiency of the film-forming aid to the latex particles, affect the film-forming property, and then affect the scrub resistance
[0007] CN104193871B discloses a novel polymer comprising specific phosphate functional monomers, using conventional emulsifiers to improve the scrub resistance of coatings by introducing allyl-containing phosphate functional monomers. The feasibility method of scrubbing property does not pay attention to the freeze-thaw stability and film-forming properties of latex paint
[0008] CN102037034B discloses a polymer dispersion comprising a phosphorus-containing polymer and an emulsifier, which uses an alkyl phosphate emulsifier and a phosphate monomer to improve the scrub resistance of the coating material, but the alkyl phosphate emulsifier belongs to Conventional emulsifiers will affect the adhesion, water resistance, freeze-thaw stability, etc. of the polymer in the later film-forming process, and then affect the scrub resistance, freeze-thaw stabilizer and low-temperature film-forming properties

Method used

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  • Acrylate emulsion, preparation method and application thereof
  • Acrylate emulsion, preparation method and application thereof
  • Acrylate emulsion, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079]Weigh each raw material according to the following mass: styrene 40g, n-butyl acrylate 30g, acrylic acid 0.5g, acrylamide 2.0g, diacetone acrylamide 1.5g, SIPOMER PAM-100 0.1g, n-dodecyl mercaptan 0.01g , Maxemul 610 60.5g, ammonium persulfate 0.2g, tert-butyl hydroperoxide 0.1g, isoascorbic acid 0.05g and appropriate amount of NaOH and deionized water.

[0080] 1) Preparation of pre-emulsion A: under normal temperature and pressure, add 0.5g Maxemul 6106 and 35g deionized water into the pre-emulsification tank with monomer metering tank and agitator, stir well to dissolve, then add 40g styrene in turn , 30g n-butyl acrylate, 0.5g acrylic acid, 90% acrylamide (i.e. 1.8g acrylamide), 1.5g diacetone acrylamide and 0.1g SIPOMERPAM-100, fully stirred for 20-30 minutes for later use;

[0081] 2) Preparation of the bottom liquid B: add the remaining acrylamide (0.2 g of acrylamide) and 50 g of deionized water into the polymerization tank equipped with a stirrer, a condenser, a...

Embodiment 2

[0086] Weigh each raw material according to the following mass: styrene 51g, n-butyl acrylate 30g, isooctyl acrylate 10g, acrylic acid 2.0g, acrylamide 0.25g, diacetone acrylamide 0.75g, SIPOMER PAM-1001.0g, n-dodecane 0.05g of base mercaptan, 2.5g of Maxemul 6106, 0.5g of ammonium persulfate, 0.5g of tert-butyl hydroperoxide, 0.25g of isoascorbic acid and appropriate amount of NaOH and deionized water.

[0087] 1) Preparation of pre-emulsion A: under normal temperature and pressure, add 2.5g Maxemul 6106 and 35g deionized water into the pre-emulsification tank with monomer metering tank and agitator, stir well and dissolve, then add 51g styrene in turn , 30g n-butyl acrylate, 10g isooctyl acrylate, 2.0g acrylic acid, 90% acrylamide (ie, 0.23g acrylamide), 0.75g diacetone acrylamide and 1.0g SIPOMER PAM-100, stir well for 20-30 minutes spare;

[0088] 2) Preparation of bottom liquid B: Add the remaining acrylamide (ie, 0.02g acrylamide) and 60g deionized water into the polyme...

Embodiment 3

[0093] Weigh each raw material according to the following mass: styrene 70g, n-butyl acrylate 60g, acrylic acid 5.0g, diacetone acrylamide 0.1g, SIPOMER PAM-100 1.0g, SIPOMER PAM-4000 1.5g, n-dodecyl mercaptan 0.1g, Maxemul 6112 3.5g, ammonium persulfate 1.0g, tert-butyl hydroperoxide 1.0g, isoascorbic acid 0.5g and appropriate amount of NaOH and deionized water.

[0094] 1) Preparation of pre-emulsion A: under normal temperature and pressure, add 3.0g Maxemul 6112 and 55g deionized water to the pre-emulsification tank with monomer metering tank and agitator, stir well to dissolve, and then add 70g benzene Ethylene, 60g n-butyl acrylate, 5.0g acrylic acid, 0.1g diacetone acrylamide, 1.0g SIPOMER PAM-100 and 1.5g SIPOMER PAM-4000, fully stirred for 20-30 minutes and set aside;

[0095] 2) Preparation of still bottom liquid B: in the polymerization kettle with stirrer, condenser, constant flow pump feeding device, add remaining emulsifier Maxemul 6112 (that is, 0.5g Maxemul 6112...

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Abstract

The invention discloses an acrylate emulsion, a preparation method and an application thereof, wherein the acrylate emulsion comprises a (meth) acrylate copolymer dispersion of an ethylenically unsaturated phosphate monomer copolymerization unit and an ethylenically unsaturated phosphate emulsifier. A latex paint prepared from the acrylate emulsion has excellent scrub resistance, and in addition,the acrylate emulsion has excellent ionic stability and freeze-thaw stability.

Description

technical field [0001] The invention belongs to the field of polymer materials, and relates to an acrylate emulsion and a preparation method and application thereof. Background technique [0002] With the development of social economy and the improvement of living standards, consumers have higher and higher requirements for the performance of latex paint, especially for the scrub resistance of latex paint. In general, the way to improve scrub resistance is to increase the amount of emulsion used when formulating latex paint, which will inevitably cause a corresponding increase in the formulation cost of latex paint, resulting in a decline in market competitiveness. [0003] In the future, my country's interior wall latex paint will mainly develop towards green environmental protection and improving the performance of low-cost, high PVC (pigment volume concentration) latex paint. Traditional interior wall latex paints can no longer meet the requirements due to the problems o...

Claims

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Application Information

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IPC IPC(8): C08F212/08C08F220/18C08F220/06C08F220/58C08F220/56C08F230/02C08F2/38C09D125/14C09D5/02
Inventor 王智英侯雷刚韩强乔义涛孙家宽
Owner WANHUA CHEMICAL (NINGBO) CO LTD
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