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A kind of acrylate emulsion and its preparation method and application

An acrylate and emulsion technology, applied in latex paints, coatings, etc., can solve the problem of not paying attention to the freeze-thaw stability, film-forming properties and other properties of latex paints, affecting scrub resistance, freeze-thaw stabilizers and low-temperature film-forming properties. , Affecting polymer adhesion, water resistance, freeze-thaw stability, etc., to achieve the effect of enhancing freeze-thaw stability and ionic stability, improving wrapping ability, improving integrity and water resistance

Active Publication Date: 2022-08-05
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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  • A kind of acrylate emulsion and its preparation method and application
  • A kind of acrylate emulsion and its preparation method and application
  • A kind of acrylate emulsion and its preparation method and application

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 61060.5g, ammonium persulfate 0.2g, tert-butyl hydroperoxide 0.1g, erythorbic acid 0.05g and an 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 to the pre-emulsion tank with monomer metering tank and agitator, after fully stirring and dissolving, add 40g styrene in turn , 30g n-butyl acrylate, 0.5g acrylic acid, 90% acrylamide (ie 1.8g acrylamide), 1.5g diacetone acrylamide and 0.1g SIPOMERPAM-100, fully stirred for 20-30 minutes for use;

[0081] 2) preparation of bottom liquid B: in the polymerization still with stirrer, condenser, constant-flow pump feeding device, add remaining acrylamide (i.e. 0.2g acrylamide) and 50g deionized wat...

Embodiment 2

[0086] Weigh each raw material according to the following masses: 51 g of styrene, 30 g of n-butyl acrylate, 10 g of isooctyl acrylate, 2.0 g of acrylic acid, 0.25 g of acrylamide, 0.75 g of diacetone acrylamide, 1.0 g of SIPOMER PAM-1001.0 g, n-dodecane thiol 0.05g, Maxemul 6106 2.5g, ammonium persulfate 0.5g, tert-butyl hydroperoxide 0.5g, erythorbic acid 0.25g and appropriate amount of NaOH and deionized water.

[0087] 1) Preparation of pre-emulsion A: under normal temperature and pressure, add 2.5g of Maxemul 6106 and 35g of deionized water to the pre-emulsion tank with monomer metering tank and agitator, after fully stirring and dissolving, add 51g of 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: in the polymerization kettle with a stirrer, a condenser, and a consta...

Embodiment 3

[0093] Weigh each raw material according to the following masses: 70 g of styrene, 60 g of n-butyl acrylate, 5.0 g of acrylic acid, 0.1 g of diacetone acrylamide, 1.0 g of SIPOMER PAM-100, 1.5 g of SIPOMER PAM-4000, n-dodecyl mercaptan 0.1 g, Maxemul 6112 3.5 g, ammonium persulfate 1.0 g, tert-butyl hydroperoxide 1.0 g, erythorbic acid 0.5 g 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-emulsion tank with monomer metering tank and agitator, after fully stirring and dissolving, add 70g benzene successively. Ethylene, 60g n-butyl acrylate, 5.0g acrylic acid, 0.1g diacetone acrylamide, 1.0g SIPOMER PAM-100 and 1.5g SIPOMER PAM-4000, stir well for 20-30 minutes for use;

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

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Abstract

The invention discloses an acrylate emulsion, a preparation method and application thereof, wherein the acrylate emulsion comprises copolymerized units of ethylenically unsaturated phosphate monomers and adopts (methyl) ethylenically unsaturated phosphate emulsifier. Acrylate copolymer dispersion. The latex paint prepared from the acrylate emulsion provided by the present invention has excellent scrub resistance, and the acrylate emulsion provided by the present invention 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 paints, and the scrub resistance performance requirements of latex paints are particularly obvious. In general, the way to improve scrub resistance is to increase the amount of emulsion used in the formulation of latex paint, which will inevitably lead to a corresponding increase in the formulation cost of latex paint, resulting in a decrease in competitiveness in the market. [0003] In the future, my country's interior wall latex paint will mainly develop in the direction of green environmental protection and improving the performance of low-cost, high PVC (pigment volume concentration) latex paint. The traditional latex paint ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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