High-solid-content low-VOC (volatile organic compound) polyurethane bicomponent matte finish and preparation method thereof

A technology with high solid content and polyurethane, applied in the field of matte topcoat, can solve the problems of poor matting, low hardness, slow drying speed, etc., and achieve excellent use characteristics and wide application fields

Active Publication Date: 2012-12-05
SHANGHAI CARPOLY PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The other is the use of general-purpose alkyd resins with higher solid content. This type of alkyd resin has a solid content of 75%-80% and a viscosity of 20,000-40,000mpas / 25°C. When using this type of alkyd resin to make a matte finish In order to make the matte finish paint match with polyurethane curing agent and diluent to achieve proper construction viscosity, more organic solvents must be used to make the VOC content close to 580g / L, and this kind of general-purpose high solid content Alkyd resin, due to production technology reasons, the drying speed is slow, the matting property is poor, and the hardness is low when making matte topcoat.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A high-solid low-VOC polyurethane two-component matte finish, consisting of components A and B, wherein component A is a matte finish resin composition, and component B is a polyurethane curing agent, wherein the matte finish Resin composition is made up of the raw material of following mass parts:

[0028] High solid content low VOC alkyd resin 88 parts,

[0029] 2 parts xylene,

[0030] 3 parts of ED30 matte powder,

[0031] 0.4 parts of fumed silica anti-settling agent,

[0032] Wax powder BYK996 0.4 parts,

[0033] Wetting agent BYK323 0.2 parts,

[0034] Defoamer BYK141 0.4 parts,

[0035] Leveling agent BYK306 0.3 parts,

[0036] 3.3 parts of butyl acetate,

[0037] Cyclohexanone 2 parts.

[0038] The preparation method of this matt finish paint resin composition is:

[0039] 1) Put the above mass parts of high-solid low-VOC alkyd resin and xylene into the paint tank, and use a low speed of 200-400 rpm to disperse evenly;

[0040] 2) Under low-speed disp...

Embodiment 2

[0047] A high-solid low-VOC polyurethane two-component matte finish, consisting of components A and B, wherein component A is a matte finish resin composition, and component B is a polyurethane curing agent, wherein the matte finish Resin composition is made up of the raw material of following mass parts:

[0048] High solid content low VOC alkyd resin 87 parts,

[0049] 3 parts xylene,

[0050] 3.5 parts of ED30 matte powder,

[0051] 0.3 parts of fumed silica anti-settling agent,

[0052] Wax powder BYK996 0.3 parts,

[0053] Wetting agent BYK323 0.15 parts,

[0054] Defoamer BYK141 0.4 parts,

[0055] Leveling agent BYK306 0.3 parts,

[0056] 2.8 parts of butyl acetate,

[0057] Cyclohexanone 2.25 parts.

[0058] The preparation method of this matt finish paint resin composition is:

[0059] 1) Put the above mass parts of high-solid low-VOC alkyd resin and xylene into the paint tank, and use a low speed of 200-400 rpm to disperse evenly;

[0060] 2) Under low-spee...

Embodiment 3

[0066] A high-solid low-VOC polyurethane two-component matte finish, consisting of components A and B, wherein component A is a matte finish resin composition, and component B is a polyurethane curing agent, wherein the matte finish Resin composition is made up of the raw material of following mass parts:

[0067] High solid content low VOC alkyd resin 86 parts,

[0068] 3 parts xylene,

[0069] 5 copies of ED30 matte powder,

[0070] 0.45 parts of fumed silica anti-settling agent,

[0071] Wax powder BYK996 0.35 parts,

[0072] Wetting agent BYK323 0.3 parts,

[0073] Defoamer BYK141 0.3 parts,

[0074] Leveling agent BYK306 0.3 parts,

[0075] 2.3 parts of butyl acetate,

[0076] Cyclohexanone 2 parts.

[0077] The preparation method of this matt finish paint resin composition is:

[0078] 1) Put the above mass parts of high-solid low-VOC alkyd resin and xylene into the paint tank, and use a low speed of 200-400 rpm to disperse evenly;

[0079] 2) Under low-speed d...

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PUM

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Abstract

The invention relates to high-solid-content low-VOC (volatile organic compound) polyurethane bicomponent matte finish which is composed of a component A and a component B, wherein the component A is a matte finish resin composition and the component B is a polyurethane curing agent. The mass ratio of the matte finish resin composition to the polyurethane curing agent is 1:0.4-0.8, and the matte finish resin composition is made of high-solid-content low-VOC alkyd resin, dimethylbenzene, ED30 matte powder, fumed silica anti-setting agent, wax powder BYK996, wetting agent BYK323, antifoaming agent BYK141, flatting agent BYK306, butyl acetate and cyclohexanone. The VOC content is equal to or smaller than 40g / L when the matte finish resin composition and the polyurethane curing agent are matched to reach proper applicable viscosity.

Description

technical field [0001] The invention relates to a matte finish paint, in particular to a high-solid-content and low-VOC polyurethane two-component matte finish paint and a preparation method thereof. Background technique [0002] At present, when paint manufacturers manufacture general-purpose matte topcoats, one type is to use general-purpose alkyd resins. When making matte finish paint with acid resin, to make the matte finish paint match with polyurethane curing agent and diluent to achieve proper construction viscosity, more organic solvents must be used to increase VOC emissions and make the VOC content close to 670g / L. The other is the use of general-purpose alkyd resins with higher solid content. This type of alkyd resin has a solid content of 75%-80% and a viscosity of 20,000-40,000mpas / 25°C. When using this type of alkyd resin to make a matte finish In order to make the matte finish paint match with polyurethane curing agent and diluent to achieve proper construct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D7/12
Inventor 张高锋朱建锋周强李晓
Owner SHANGHAI CARPOLY PAINT
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