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Method for preparing ultraviolet photocurable coating

A technology for curing coatings and production methods, which is applied in the direction of coatings, etc., and can solve the problems of decreased physical and chemical performance indicators of paint film adhesion, adverse effects of construction environment, and reduced curing speed, and achieve excellent construction performance, good construction performance, and fast curing speed. fast effect

Inactive Publication Date: 2005-01-19
HUNAN UNIV OF ARTS & SCI
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  • Abstract
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Problems solved by technology

As the viscosity of linear oligomers increases with the increase of molecular weight, a large amount of reactive diluent monomers must be added for ideal construction. On the one hand, this will have adverse effects on the construction environment, and on the other hand, it will cause the curing rate to decrease and the cured film to shrink. , resulting in a decline in physical and chemical performance indicators such as paint film adhesion

Method used

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  • Method for preparing ultraviolet photocurable coating
  • Method for preparing ultraviolet photocurable coating
  • Method for preparing ultraviolet photocurable coating

Examples

Experimental program
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Embodiment Construction

[0023] The following is a detailed description of an embodiment:

[0024] 1. Preparation of multi-branched oligomer B

[0025] Add 1248 grams of prepolymer (A), 1560 grams of glycidyl methacrylate (GMA), 1750 grams of xylene, and 31 grams of N,N-xylenebenzylamine into the reaction flask. Vacuum and fill with nitrogen are repeated 5 times. Under the protection of nitrogen, the temperature of the reaction system was gradually controlled at 135°C. After 8.5 hours of reaction, the temperature was lowered to room temperature. The reaction product was washed 4 times with methanol. The precipitate was vacuum dried at a drying temperature of 30-40°C to a constant weight. , The multi-branched oligomer B that can be cured by ultraviolet light is prepared.

[0026] 2. Preparation of UV-curable coatings

[0027] Take 450 grams of multi-branched oligomer B, 180 grams of linear acrylic acrylate oligomer, 140 grams of propoxylated neopentyl glycol diacrylate, and 85 grams of ethoxylated trimethy...

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Abstract

The preparation method of paint capable of being solidified under the irradiation of UV light includes the following steps: firstly, preparing multibranched oligomer, then adding 30-50 portions of multibranched aligomer, 10-20 portions of linear acrylic acid type acrylate oligomer, 10-15 portions of oxypropylated neopentyl glycol diacrylate, 5-10 portions of ethoxylated trimethylalpropane triacrylate and 5-10 portionsof butyl acrylate into reactor, temp. is 40-50 deg.C, uniformly mixing them, and adding levelling agent, optical initiating agent and other adjuvant while stirring at 30-40 deg.C and uniformly mixing them to obtain the product with good construction property and quick solidification speed, and its paint film also has the excellent physical and chemical properties.

Description

Technical Field: [0001] The invention belongs to an organic chemical coating, that is, a preparation method of an ultraviolet curing coating. Background technique: [0002] Ultraviolet curing coatings are characterized by high efficiency, energy saving, resource saving, and environmental protection. They are widely used in electronics, printing, construction, chemicals, automobiles, modern communication equipment and facilities, aerospace equipment and facilities, light industrial appliances, wood furniture and other fields , It is called the "green industry" product of the 21st century at home and abroad. [0003] The UV curable coatings currently on the market are all formulated with linear oligomers. As linear oligomers increase in molecular weight, their viscosity continues to increase. For ideal construction, a large amount of reactive diluent monomers must be added. This has a negative impact on the construction environment, on the other hand, it will cause the curing rate ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D4/02
Inventor 周诗彪刘立新张儒祥
Owner HUNAN UNIV OF ARTS & SCI
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