Method for preparing scratch-resistance alkyd resin used for PU furniture paint

A kind of alkyd resin and preparation technology, applied in the direction of coating, polyester coating, etc., can solve the problems of poor scratch resistance, poor fullness of paint film, poor transparency, etc., and achieve extremely high transparency for recoating Good, good scratch resistance, good fullness effect

Inactive Publication Date: 2016-05-18
彭绍宾
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, the resin used for matte paint has good fullness, but the matting property is poor. The paint film that is easy to be matted has poor fullness, poor transparency, and poor scratch resistance, so it is not easy to make scratch-resistant matte paint.

Method used

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  • Method for preparing scratch-resistance alkyd resin used for PU furniture paint

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Embodiment Construction

[0020] The present invention will be further described in detail below with reference to the examples, but the embodiments of the present invention are not limited thereto.

[0021] The preparation process of anti-scratch alkyd resin for PU furniture paint is generally produced by one-step feeding solvent method. The solvent method has a reflux device and has less material loss. The relative molecular mass distribution is uniform to ensure product quality, which specifically includes the following steps:

[0022] S1, put the raw material into the reaction kettle, pass N 2 Raise the temperature until there is reflux and stop passing N 2 , the types of raw materials and their mass percentages are: 19-21% oleic acid, 20-24% phthalic anhydride, 0.5-0.7% maleic anhydride, 2-4% trimethylolpropane, 9-11% pentaerythritol, ethylene glycol 5-7%, adipic acid 3-4%, reflux xylene 2%, xylene or butyl acetate 33-37%;

[0023] S2. Heat up to 185°C and keep warm for 1 hour. In actual applic...

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Abstract

The invention relates to a method for preparing a scratch-resistance alkyd resin used for PU furniture paint. The method comprises the following steps: adding the raw materials in a reaction vessel, introducing N2 for heating, stopping introduction of N2 until backflow is generated, wherein the paint comprises the following materials by mass percentage: 19-21% of oleic acid, 20-24% of phthalic anhydride, 0.5-0.7% of maleic anhydride, 2-4% of trimethylol propane, 9-11% of pentaerythritol, 5-7% of glycol, 3-4% of adipic acid, 2% of reflux dimethylbenzene, and 33-37% of xylene or n-butyl acetate; heating the materials to the temperature of 180-190 DEG C and insulating the materials for 1-2.5 hours; heating the materials at a speed of 10 DEG C / hour and insulating the materials at the temperature of 220 DEG C, and performing esterification for 2-3 hours; and cooling and performing dilution. The method has the advantages of simple step and convenient operation. The prepared alkyd resin used the preparing Pu top-coat paint, the Pu top-coat paint has excellent performance, and has the advantages of good scratch resistance, good fullness, and good re-coating transparency.

Description

technical field [0001] The invention relates to the technical field of furniture paints, in particular to a preparation process of a scratch-resistant alkyd resin for PU furniture paints. Background technique [0002] Hydroxyl-containing alkyd resins can be used as components of PU wood lacquers. The resulting coatings have the advantages of high hardness, good leveling, good adhesion, and good chemical resistance. Variety. With the improvement of people's living standards, consumption tends to pursue personalization and leisure. Matte coatings give people an elegant and comfortable feeling, and the market demand is on the rise. Among the high-end furniture paints, the Pu anti-scratch matte finish paint film is hard, has excellent scratch resistance, good leveling, easy to form a plump paint film, and is integrated with the wood, making the furniture full of aura and is widely favored. Admired by furniture factories. [0003] Generally, the ways to improve the scratch res...

Claims

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Application Information

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IPC IPC(8): C08G63/49C09D167/08
Inventor 彭绍宾
Owner 彭绍宾
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