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Method for preparing resin used for metal corsslinking molecular film-forming bi-component water carpentry paint

A water-based wood paint and metal cross-linking technology, applied in coatings, liquid spraying devices, spraying devices, etc., can solve the problems of poor storage stability, cross-linking density and low mechanical strength of the paint film, and achieve low production costs and fullness Good degree and easy sanding effect

Active Publication Date: 2009-12-09
GUANGDONG HUALONG COATING IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the present invention, its paint liquid appearance is opaque milky white, and storage stability is poor, and cross-linking density and paint film mechanical strength are not high; In China, colleges and universities such as Tsinghua University once applied metal cross-linking technology on latex paint According to research reports, many manufacturers have applied this technology to the paper industry in recent years, but there is no relevant report on applying it to water-based wood lacquers in China.
[0015] The synthesis of water-soluble water-based resins has been reported at home and abroad, but most of them are used in the ink industry, and there is no report on the application of metal cross-linking to wood varnishes.

Method used

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  • Method for preparing resin used for metal corsslinking molecular film-forming bi-component water carpentry paint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] The monomer composition of present embodiment resin copolymer is as follows:

[0058] components

Percentage (weight), %

Methyl methacrylate

10.18

Butyl acrylate

9.82

Methacrylate

20.00

[0059] 10% by weight of N-methylpyrrolidone was added to the reaction flask, protected by nitrogen gas, stirred, heated to 140°C, and the above monomer mixture, 2% by weight of benzoyl peroxide and 1% by weight of 2-mercapto Add ethanol dropwise into the bottle for 4 hours, then react at 150°C for 4h, and carry out vacuum distillation on the obtained product, then cool down to 60°C, add 10% by weight of ammonia water and 37% by weight of tap water, and quickly Stir for 3h.

[0060] The water-based resin obtained in this embodiment has the following properties:

[0061] project

technical indicators

Exterior

Transparent homogeneous solution

solid content

39.5％

Volatile Organic Comp...

Embodiment 2

[0065] The copolymer composition of present embodiment resin is as follows:

[0066] components

Percentage (weight), %

Styrene

25.22

2-Ethylhexyl Acrylate,

17.31

Acrylamide

7.47

acrylic

5.00

[0067] 5% by weight of isopropanol and 0.5% by weight of antioxidants were added to the reaction flask, stirred, heated to 70 ° C, the above-mentioned monomer mixture and 0.5% by weight of azobisisobutyronitrile and 2% by weight of Dodecyl mercaptan was added dropwise into the bottle for 1 hour, and then reacted at 70°C for 1 hour. After the product is distilled under reduced pressure, the temperature is lowered to below 10° C., 0.5% by weight of ethylenediamine and 36.5% by weight of distilled water are added, and the mixture is rapidly stirred for 0.5 h.

[0068] The resin obtained in this embodiment has the following properties:

[0069] project

Embodiment 3

[0071] The copolymer composition of present embodiment resin is as follows:

[0072] components

Percentage (weight), %

Isobornyl Acrylate

6.29

Decyl acrylate

27.21

β-Hydroxyethyl Methacrylate

1.50

maleic acid

12.50

[0073] Add 7.5% by weight ethylene glycol monobutyl ether and 0.25% by weight antioxidant to the reaction flask, stir, and heat to 105°C, dropwise add the above monomer mixture and 1.25% by weight of azobisisobutyronitrile In the bottle, the dropwise addition time is 2.5h, and then react at 110°C for 2.5h. After the product was distilled under reduced pressure, the temperature was lowered to below 35° C., 5.25% by weight of ethanolamine and 38.25% by weight of deionized water were added, and the mixture was stirred rapidly for 1.75 hours.

[0074] The resin obtained in this embodiment has the following properties:

[0075] project

technical indicators

Exterior

Trans...

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Abstract

The invention provides a method for preparing a metal cross-linked molecular film-forming two-component water-based resin for wood ware that can better meet the performance requirements of the paint for wood ware coating. The method comprises the following steps: (1) preparing a copolymer by polymerizing 20%-50% by weight of monomers containing unsaturated double bonds and 5%-20% by weight of monomers containing carboxylic acid groups; (2) The copolymer solution is distilled under reduced pressure to remove low-molecular substances; (3) neutralized by a volatile base to achieve complete water solubility. The invention is simple and convenient to manufacture, the formula cost and production cost are relatively low, and the price of main raw materials is stable and easy to obtain. The obtained resin paint has excellent comprehensive properties, and its outstanding performances are: fast drying at room temperature, high hardness, good fullness, high temperature sticking resistance, easy sanding, good water resistance, and simple construction.

Description

technical field [0001] The invention relates to the technical field of chemistry and chemical engineering, in particular to a method for preparing a metal cross-linked molecular film-forming two-component water-based wood lacquer resin. technical background [0002] As an important class of surface beautification and protection decoration materials, wood lacquer is widely used in our life. However, traditional wood paints are basically solvent-based paints, such as polyurethane paints, nitro paints, alkyd paints, etc., which contain a large amount of volatile organic solvents, which will produce many toxic and irritating substances during the production and use of paints. Some organic compounds also contain strong carcinogens such as benzene, formaldehyde, and free TDI, which have caused serious harm to people's health and the surrounding environment. [0003] With the development of society, the prosperity of economy and the improvement of living standards, people pay more...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/10C08F2/38C09D133/04B05B7/06
Inventor 罗爱民
Owner GUANGDONG HUALONG COATING IND
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