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Method for preparing alkyd resin for dyed veneers and application thereof

A technology of alkyd resin and wood veneer, which is applied in wood treatment, manufacturing tools, wood processing appliances, etc. It can solve the problems of yellowing and discoloration, easy discoloration, and overall performance not meeting customer requirements, achieving high response speed and communication Effect of joint density, improved safety and controllability, excellent anti-tarnish performance

Pending Publication Date: 2021-02-12
GUANGDONG MAYDOS BUILDING MATERIALS LTD CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Dyeing wood veneer will leave a lot of bleaching agent residues during the bleaching process, and there are also substances that are prone to discoloration in the dye, which are prone to chemical bond changes or structural changes under the sun and light, resulting in yellowing and discoloration. The problem of easy discoloration affects dyed veneer Promotion and use in the furniture industry
Currently on the market, some products choose to add a large amount of ultraviolet absorbers or stabilizers to solve the problem of discoloration. This can better reduce the problem of yellowing and discoloration, but at the same time it affects the permeability of PU paint products. The overall performance is still up to Less than the customer's request

Method used

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  • Method for preparing alkyd resin for dyed veneers and application thereof
  • Method for preparing alkyd resin for dyed veneers and application thereof
  • Method for preparing alkyd resin for dyed veneers and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The raw materials and parts by mass used to prepare the alkyd resin for stained veneer in this implementation are shown in Table 1.

[0039] The raw material composition of the dyed veneer alkyd resin of table 1 embodiment 1

[0040]

[0041]

[0042] Prepare the alkyd resin for stained veneer of the present embodiment according to the following steps:

[0043] 1. Esterification copolymerization reaction.

[0044] (1) take each raw material component by formula quantity, stand-by;

[0045] (2) The polyol components contained in the first batch of polyol monomers, benzotriazole reactive ultraviolet absorbers, hypophosphorous acid, and xylene are sequentially dropped into the reactor, and the temperature is raised to 80°C under the condition of nitrogen gas. Incubate at ±2°C for 1 hour.

[0046] (3) Put isononanoic acid, isooctanoic acid, benzoic acid, phthalic anhydride, maleic anhydride, adipic acid into the reaction kettle successively, continue to heat up und...

Embodiment 2

[0053] The raw materials and parts by mass used to prepare the alkyd resin for stained veneer in this implementation are shown in Table 2.

[0054] The raw material composition of the dyed veneer alkyd resin of table 2 embodiment 2

[0055]

[0056] Prepare the alkyd resin for stained veneer of the present embodiment according to the following steps:

[0057] 1. Esterification copolymerization reaction.

[0058] (1) take each raw material component by formula quantity, stand-by;

[0059] (2) The polyol component contained in the first batch of polyol monomers, benzotriazole reactive ultraviolet absorbers, hypophosphorous acid, phosphite antioxidants, and xylene are sequentially dropped into the reactor, Raise the temperature to 80±2°C for 1 hour under nitrogen gas.

[0060] (3) Isononanoic acid, lauric acid, benzoic acid, phthalic anhydride, maleic anhydride, and adipic acid are dropped into the reactor successively, and the temperature is raised under the situation of c...

Embodiment 3

[0067] The raw materials and parts by mass used to prepare the alkyd resin for stained veneer in this implementation are shown in Table 3.

[0068] The raw material composition of the dyed veneer alkyd resin of table 3 embodiment 3

[0069]

[0070]

[0071] Prepare the alkyd resin for stained veneer of the present embodiment according to the following steps:

[0072] 1. Esterification copolymerization reaction.

[0073] (1) take each raw material component by formula quantity, stand-by;

[0074] (2) The polyol component contained in the first batch of polyol monomers, benzotriazole reactive ultraviolet absorbers, phosphite antioxidants, polybasic hindered aminophenol antioxidants, and xylene are sequentially Put it into the reaction kettle, and raise the temperature to 80±2°C for 1 hour under the condition of blowing nitrogen.

[0075] (3) lauric acid, stearic acid, coconut oleic acid, benzoic acid, phthalic anhydride, maleic anhydride, adipic acid are dropped into t...

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Abstract

The invention provides a method for preparing alkyd resin for dyed veneers. The method comprises the following steps: step 1, mixing a reactive ultraviolet light absorber, a first batch of polyol monomers and an acid component to initiate esterification co-polymerization reaction; and step 2, adding a second batch of polyol monomers into the reaction liquid obtained after the step 1 is completed,and initiating esterification co-polymerization reaction; wherein the reactive ultraviolet light absorber comprises at least two esterification reaction active groups, and each esterification reactionactive group is independently selected from hydroxyl or carboxyl; the first batch of polyol monomers and the second batch of polyol monomers independently comprise at least two of dihydric alcohol monomers, trihydric alcohol monomers and tetrahydric alcohol monomers; and the acid monomer includes a polybasic acid monomer. According to the invention, the reactive ultraviolet absorber, the first batch of polyol monomers and the second batch of polyol monomers are jointly used as monomers for esterification polymerization reaction, so that the prepared alkyd resin has excellent permeability, yellowing resistance and discoloration resistance.

Description

technical field [0001] The invention belongs to the field of chemical coatings, in particular to a method for preparing alkyd resin for stained veneer and its application. Background technique [0002] With the increasing industrial production of modern furniture, the continuous consumption of a large amount of precious wood has caused a sharp decrease in wood resources. Natural wood is increasingly scarce and more expensive, and the cost of solid wood furniture is getting higher and higher. People began to look for products that could replace solid wood furniture, and found that furniture can be produced by sticking natural wood veneer. This manufacturing method can reduce the cost of furniture. The cost is low, and some characteristics of solid wood furniture can be maintained, which can be better promoted. The income from natural veneer can effectively reduce the cost of furniture, but because natural veneer is a kind of naturally occurring veneer, it usually has defects...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/685C08G63/49B27K5/02
CPCC08G63/6858C08G63/48B27K5/02
Inventor 符英苑范昌平周伟建符传杰王召伟赵文华
Owner GUANGDONG MAYDOS BUILDING MATERIALS LTD CO
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