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Water-based paint coalescing agent composition and preparation method thereof

A technology of film-forming aids and water-based coatings, applied in the direction of coating, etc., can solve the problems of lowering the minimum film-forming temperature of emulsion resin, unable to reduce the VOC content of coatings, and single effect of film-forming aids, so as to reduce VOC emissions, The best coating effect and the effect of improving coalescence quality

Active Publication Date: 2017-10-10
宇昂科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the boiling point of lauryl alcohol ester is only 254°C, and it still has a certain degree of volatility, and it will be irritating to people's eyes, respiratory system and skin, especially for the elderly, children and pregnant women.
[0010] In addition, the current film-forming aids have a single effect, which can only guarantee a better effect of reducing the minimum film-forming temperature of the emulsion resin
It has no further treatment effect on toxic and harmful gases such as formaldehyde and sulfide produced during the use of coatings, and cannot reduce the VOC content of coatings, and does not have satisfactory coalescence activity.

Method used

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  • Water-based paint coalescing agent composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0053] Preparation example 1, preparation of acrylamide / methyl methacrylate / 4-dimethylaminostyrene terpolymer

[0054] Add a low-boiling point solvent with a total mass of 25 ± 2% of the reactants to the three-necked flask as a continuous phase, and under the condition of feeding high-purity nitrogen protection, seal the three-necked flask and control it at a low-speed stirring condition of 50 ± 5r / min. , prepare acrylamide, methyl methacrylate and 4-dimethylaminostyrene according to the mass ratio of (1~5):1:(2~5) to prepare a polymerized monomer mixture, and then control the appropriate drop The flow rate is to add the polymerized monomer mixture dropwise into the reaction kettle within 30±5min.

[0055] Increase the stirring speed to 150±5r / min, then add an appropriate amount of initiator in multiple batches, with an interval of 15±2min between each batch, and control the polymerization at 60-75°C for heat preservation. After the addition of the initiator, continue to pass...

preparation example 2

[0061] Preparation example 2, preparation of adsorption modifier

[0062] Mix the zinc ricinoleate in the formulated amount with the acrylamide / methyl methacrylate / 4-dimethylaminostyrene terpolymer prepared in Preparation Example 1 to form an adsorption modifier for later use.

[0063] In the following examples 1-14, the preparation steps of the preparation of the adsorption improving agent are all the same, the difference is: the zinc ricinoleic acid ester and acrylamide / methyl methacrylate / 4-dimethylaminostyrene terpolymer Dosage varies.

preparation example 3

[0064] Preparation example 3, preparation of film-forming aid composition

[0065] a. Put the formulated amount of unsaturated polymer esters into a reaction kettle with a heating and stirring device, control the temperature of the reaction kettle to 60-90°C, and the stirring speed to 150-300r / min, heat and stir to form a uniform solution a.

[0066] b. Keep heating and stirring, divide the formula amount of the permeability improver into multiple batches, feed once every 30±5min, add it to the solution A in step a, stir until completely dissolved, and form solution B.

[0067] c. Add the adsorption modifier in the formula amount to the stabilizer, mix and dissolve evenly, add it to solution B together, keep warm and dissolve for 6-8 hours, stop heating, continue to stir and mix until the temperature of the reactor drops below 40°C , Blowing, to obtain the film-forming aid composition.

[0068] The batches of the permeability improving agent added can be determined according...

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Abstract

The invention discloses a water-based paint coalescing agent composition. The water-based paint coalescing agent composition is prepared from the following raw materials in percentage by mass: 50-80% of unsaturated polymer ester, 10-20% of a permeability improver, 10-20% of an adsorption improver and 0-10% of a stabilizer, wherein the permeability improver is a highly crosslinked polymer material with a three-dimensional network structure; and the adsorption improver is an organic polymer composition formed by zinc ricinate ester and an acrylamide / methyl methacrylate / 4-dimethyl amino styrene terpolymer. The invention also provides a preparation method of the water-based paint coalescing agent composition. The water-based paint coalescing agent composition disclosed by the invention has the advantages that the minimum film forming temperature of water-based paint can be effectively lowered to the temperature ranging from -10 DEG C to 7 DEG C, and better coating effect of the water-based paint can be guaranteed; when a boiling point reaches the temperature of about 370 DEG C, self VOC emission of the coalescing agent composition is low, VOC emission of the water-based paint also can be greatly reduced, and the water-based paint coalescing agent composition also has an air purifying function.

Description

technical field [0001] The invention belongs to the technical field of coatings, and in particular relates to a water-based coating film-forming aid composition and a preparation method thereof. Background technique [0002] Water-based latex paint (water-based paint) mainly refers to latex paint that uses water as a solvent. After the water-based latex paint is applied, a film is formed on the attached surface to form a protective layer. The film-forming process of water-based latex paint is usually divided into the following steps: [0003] (1) Filling process. After the construction of latex paint, the water in it gradually volatilizes, and the polymer particles, pigments, and filler particles that were originally dispersed due to the stabilization of electrostatic repulsion and steric hindrance gradually move closer, but they can still move freely. At this stage, the volatilization of water is similar to the volatilization of pure water, and it is volatilization at a ...

Claims

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Application Information

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IPC IPC(8): C09D7/12
CPCC08K5/06C08K5/098C08K5/101C08K5/103C08K5/42C08K2003/324C08L1/28C08L3/02C08L5/08C08L33/02C08L33/14C08L33/26C08L39/06C08L71/02C08L75/04
Inventor 王宇熊俊超陈占金玉伟朱广东
Owner 宇昂科技有限公司
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