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Low-odor and yellowing-free polyurethanes matt white finish for woodwork

A polyurethane-based, low-odor technology, applied in the field of white matte paint, can solve the problems of easy yellowing, aging, human injury, etc., and achieve the effects of excellent leveling, good hiding power and good chemical resistance

Active Publication Date: 2012-10-17
广东花王涂料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the current existing technology, PU white topcoat is a kind of white paint with excellent comprehensive performance, which is widely used in wood decoration. After conventional paint matching construction, due to the use of petrochemical products in the production process, the solvent volatilizes in the air after construction, and the residue is harmful to the human body. Harmful gas, the damage to the human body is inevitable, and it is easy to yellow and age

Method used

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  • Low-odor and yellowing-free polyurethanes matt white finish for woodwork

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A low-odor, non-yellowing polyurethane-based matte white topcoat for woodware, the weight ratio of components A, B and C is 1:0.4-0.5:0.4-0.6

[0028] (1) The weight ratio of component A:

[0029] 3815 15%, 50% titanium dioxide 63%, 20% vinyl resin 8%,

[0030] Anti-settling agent 3%, defoamer 0.2%, leveling agent 0.2%,

[0031] Dispersant 0.2%, n-butyl acetate 5%, wax powder 0.4%,

[0032] Matting powder 5%;

[0033] Evenly dispersed to fineness ≤ 25μm, viscosity 4500~5500cPs / 25℃;

[0034] The preparation of described component A comprises the following steps:

[0035] Select a clean dispersion cylinder that meets the standards, and put in 63kg of 50% titanium dioxide slurry, 381 515kg, 8kg of 20% vinyl acetate resin, 3kg of anti-sedimentation agent, 0.2kg of dispersant (EFKA-4010), 0.2kg of defoamer, leveling 85% of the total amount of 0.2kg of n-butyl acetate and 5kg of n-butyl acetate, start the disperser, and after the low-speed dispersion is uniform, put in 0...

Embodiment 2

[0057] (1) Production weight ratio of Group A:

[0058] 3815 29%, 50% titanium dioxide 58%, 20% vinyl resin 5%,

[0059] Anti-settling agent 1%, defoamer 0.4%, leveling agent 0.5%,

[0060] Dispersant 0.1%, n-butyl acetate 3.5%, wax powder 0.5%,

[0061] Matting powder 2%;

[0062] Evenly dispersed to fineness ≤ 25μm, viscosity 4500~5500cPs / 25℃;

[0063] (2) The weight ratio of component B

[0064] Dehydrated n-Butyl Acetate 52%

[0065] HX-90B 15%

[0066] OK.D.S 33%;

[0067] (3) The weight ratio of component C

[0068] n-Butyl Acetate 64%, Propylene Glycol Methyl Ether Acetate 20%,

[0069] Dimethyl carbonate 16%;

Embodiment 3

[0071] 3815 26%, 50% titanium dioxide 58%, 20% vinyl resin 6%,

[0072] Anti-settling agent 2%, defoamer 0.4%, leveling agent 0.2%,

[0073]Dispersant 0.2%, n-butyl acetate 4%, wax powder 0.6%,

[0074] Matting powder 3.6%;

[0075] Evenly dispersed to fineness ≤ 25μm, viscosity 4500~5500cPs / 25℃;

[0076] (2) The weight ratio of component B

[0077] Dehydrated n-butyl acetate 52%, HX-90B 18%, OK.D.S 30%;

[0078] can also be:

[0079] Dehydrated n-butyl acetate 50%, HX-90B 10%, OK.D.S 40%;

[0080] (3) The weight ratio of component C

[0081] n-Butyl acetate 64%

[0082] Propylene glycol methyl ether acetate 20%

[0083] Dimethyl carbonate 16%

[0084] Each performance index of PU woodware white finish paint of the present invention is as follows:

[0085] project

[0086] Part A

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Abstract

The invention discloses a low-odor and yellowing-free polyurethanes matt white finish for woodwork. The weight ratio of a component A, a component B to a component C when the matt white finish is coated is 1:(0.4-0.5):(0.4-0.6); the component A contains the following components: 3815, 50% titanium white pulp, 20% vinyl chloride-vinyl acetate resin, an anti-settling agent, a defoaming agent and a leveling agent; the component B contains the following components: dehydrated n-butyl acetate, HX-90B, OK and D,S; and the component C contains the following components: n-butyl acetate and propylene glycol methyl ether acetate. Tests and trials prove that the polyurethanes matt white finish provided by the invention has the advantages of extremely superior yellowing resistance, strong coating adhesion force, high hardness, good abrasion and scratching resistances, excellent thermal resistance and outstanding fullness, is low in odor and good in leveling property during construction, ensures the harm of hazardous substances in decoration to the body of a worker is minimized, and completely conforms to the requirement of GB18581-2009, HJ-T414-2007 in the aspect of environmental friendlinessproperty.

Description

technical field [0001] The invention relates to a white matte paint, in particular to a white matte paint prepared by using coconut oil alkyd resin with low odor and good yellowing resistance and an environment-friendly solvent. Background technique [0002] In the current existing technology, PU white topcoat is a kind of white paint with excellent comprehensive performance, which is widely used in wood decoration. After conventional paint matching construction, due to the use of petrochemical products in the production process, the solvent volatilizes in the air after construction, and the residue is harmful to the human body. Harmful gas, the damage to the human body is inevitable, and it is easy to yellow and age. Contents of the invention [0003] The purpose of the present invention is to provide a low-odor, non-yellowing polyurethane-based matte white finish for wood, which reduces the residual harmful gas in the paint film, has high yellowing resistance and low odo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/06C09D7/12
Inventor 方学平
Owner 广东花王涂料有限公司