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Paint composition for woodware and wood product made of paint composition

A composition and coating technology, which is applied in the direction of surface coating liquid device, coating, pretreatment surface, etc., can solve the problems of unsatisfactory application, failure to meet application requirements, low hardness of dry coating film, etc.

Active Publication Date: 2019-09-17
GUANGDONG HUARUN PAINT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the application of this system on wood substrates is not satisfactory
The hardness of the dry coating film obtained by this Acure curing technology cured at room temperature is much lower than that of the traditional two-component polyurethane coating, which cannot meet the application requirements

Method used

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  • Paint composition for woodware and wood product made of paint composition
  • Paint composition for woodware and wood product made of paint composition
  • Paint composition for woodware and wood product made of paint composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0091] reactive donor

Synthetic example 1

[0092] Synthesis Example 1: Acetoacetate Epoxy Resin (A1)

[0093] At room temperature, 220.30 g of epoxy resin (NanYa, EEW: 471 g / mol) and 79.70 g of t-BAA were charged into a four-necked flask equipped with a thermometer, overhead stirrer, gas inlet and distillation apparatus. Supply N through the gas inlet 2 gas to provide N 2 Protect. The reaction mixture was then slowly heated to about 130°C and the distillate (tert-butanol) collected and maintained at this temperature until the distillation temperature did not exceed 78°C. Under these conditions (distillation temperature <= 78°C), the temperature of the mixture was raised to 160°C. When the temperature of the mixture reached 160°C, it was maintained until the distillation temperature was below 60°C. The mixture was then cooled to below 100°C and then mixed with n-butyl acetate (n-BA). The solids content is about 70%.

Synthetic example 2

[0094] Synthesis Example 2: Acetoacetate Epoxy Resin (A2)

[0095] Epoxy resin (NanYa, EEW: 622 g / mol), t-BAA and n-BA were 212.54, 87.46 and 101.02 g, respectively. The detailed synthesis procedure is the same as that of Synthesis Example 1 (A1). The solids content is about 70%.

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PUM

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Abstract

The invention relates to a paint composition for carpentry and a wood product manufactured by the paint composition. The paint composition comprises a film forming resin composition (A) and a catalyst (B), wherein the film forming resin composition comprises a reactive donor capable of providing two or more nucleophilic carbanions, and a reactive receptor containing two carbon-carbon double bond groups; the catalyst is used for catalyzing the reactive donor and the reactive receptor to take Michael addition cross-linking reaction, wherein at least one of the reactive receptor and the reactive donor contains an aromatic ring structure; a polymer formed through reactive receptor homopolymerisation has 100 DEG C or higher Tg.

Description

technical field [0001] The present invention relates to a wood coating composition and a wood product made therefrom, more particularly, the invention relates to a wood coating composition cured by Michael addition reaction and a wood product made therefrom. Background technique [0002] Traditional solvent-based two-component polyurethanes have been widely used in wood coatings due to their excellent overall properties, including drying speed, fullness, film hardness, gloss, and chemical resistance. Currently, it is still the coating of choice for wood. However, due to increasingly stringent environmental regulations, control standards for free diisocyanates (such as TDI) and volatile organic compounds (VOCs) in coating applications are becoming more stringent. Especially, TDI is extremely harmful to the human body, so the non-isocyanate (NICN) curing technology without any free TDI has received great attention in the academic and industrial fields. [0003] So far, there...

Claims

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Application Information

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IPC IPC(8): C09D4/02C09D4/06
CPCC09D4/06C09D4/00B05D7/06B05D2504/00B05D1/02B05D3/0272B05D3/0406B05D2203/20C08K5/3472C09D165/00C09D15/00C08G61/12C08G2261/142C08F222/102C08F222/103B05D2502/00C08G59/1455C08G59/245C08G2150/00
Inventor 牛松陈宏彬范世刚赵熙
Owner GUANGDONG HUARUN PAINT CO LTD
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