Water-based two-component bright transparent finishing coat

A water-based two-component, transparent topcoat technology, applied in coatings, polyurea/polyurethane coatings, etc., can solve the problems of micro-foaming, unsightly, uneven paint film, etc., to reduce VOC emissions and achieve energy saving Effect of emission reduction and long service life

Inactive Publication Date: 2019-07-02
HUIZHOU CHANGRUNFA PAINT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In this context, furniture factories have switched from using polyurethane paint to water-based paint, but the development of water-based paint technology is still relatively immature, and it is difficult to achieve a gloss of more than 90%. At the same time,

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Water-based two-component bright transparent topcoat, which is composed of component A, component B and water, the weight ratio of said component A is: 68 parts of water-based hydroxyl acrylic resin, 0.2 part of wetting agent, and 0.2 part of pH regulator 0.3 parts of the first defoamer, 0.2 parts of the second defoamer, 0.4 parts of the defoamer, 2 parts of the film-forming aid, 0.5 parts of the rheological additive, 0.3 parts of the third defoamer, and 0.5 parts of the leveling agent Parts, 4 parts of wax emulsion, 23.4 parts of water; The component B is 14 parts of water-based isocyanate curing agent; The weight ratio of the component A, component B and water is: the component A: component B: Water=100:14:15.

[0023] The viscosity of the water-based glossy topcoat is 62KU / 25°C, the humidity is 65%, the construction viscosity is 30s (Iwata 2# cup), the sprayed wet film thickness is 100 microns, the substrate is a water-based two-component transparent primer board, an...

Embodiment 2

[0025] Water-based two-component bright transparent topcoat, which is composed of component A, component B and water, the weight ratio of said component A is: 73 parts of water-based hydroxyl acrylic resin, 0.5 part of wetting agent, and 0.4 part of pH regulator 0.4 parts of the first defoamer, 0.5 parts of the second defoamer, 0.8 parts of the defoamer, 3 parts of the film-forming aid, 0.4 parts of the rheological additive, 0.2 parts of the third defoamer, and 0.2 parts of the leveling agent Parts, 4 parts of wax emulsion, 16.6 parts of water; The component B is 17 parts of water-based isocyanate curing agent; The weight ratio of the component A, component B and water is: the component A: component B: Water = 100:17:15.

[0026] The viscosity of the water-based glossy topcoat is 64KU / 25°C, the humidity is 65%, the construction viscosity is 31s (Iwata 2# cup), the sprayed wet film thickness is 100 microns, the substrate is a water-based two-component transparent primer board, ...

Embodiment 3

[0028] Water-based two-component bright transparent topcoat, which is composed of component A, component B and water, the weight ratio of said component A is: 80 parts of water-based hydroxyl acrylic resin, 0.3 part of wetting agent, and 0.5 part of pH regulator 0.8 parts of the first defoamer, 1 part of the second defoamer, 0.4 parts of the defoamer, 4 parts of the film-forming aid, 0.4 parts of the rheological additive, 0.4 part of the third defoamer, and 0.2 parts of the leveling agent Parts, 6 parts of wax emulsion, 6 parts of water; The component B is 20 parts of water-based isocyanate curing agent; The weight ratio of the component A, component B and water is: the component A: component B: Water=100:20:15.

[0029] The viscosity of the water-based glossy topcoat is 65KU / 25°C, the humidity is 65%, the construction viscosity is 33s (Iwata 2# cup), the sprayed wet film thickness is 100 microns, the substrate is a water-based two-component transparent primer board, and the g...

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PUM

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Abstract

The invention provides a water-based two-component bright transparent finishing coat. The finishing coat is composed of a component A, a component B and water; the component A comprises the followingmaterials, in parts by weight: 65-80 parts of water-based hydroxy acrylic resin, 0.2-0.5 part of a wetting agent, 0.2-0.5 part of a pH regulating agent, 0.3-1 part of a first defoaming agent, 0.2-1 part of a second defoaming agent, 0.3-1 part of a defoaming agent, 2-5 parts of a film-forming auxiliary agent, 0.5-1 part of a rheological auxiliary agent, 0.2-1 part of a third defoaming agent, 0.1-0.5 part of a levelling agent, 3-6 parts of a wax emulsion and 6-24 parts of water; the component B comprises 14-20 parts of a water-based isocyanate curing agent; and a weight ratio of the component Ato the component B to the water is 100:(14-20):15. The finishing coat provided by the invention can be widely used in hotel furniture, bathroom sanitary products and other bright-surface coatings andsolves a major difficult problem that plagues furniture coating, the VOC emission of the finishing coat is reduced, and initiatives of energy conservation and emission reduction in China are realized.

Description

technical field [0001] The invention relates to the field of chemical industry, more specifically, relates to a water-based two-component bright transparent topcoat. Background technique [0002] Recently, the state restricts VOC emissions in paints, and collects consumption tax on paints with VOC emissions higher than 420g / L. The VOC emissions of traditional polyurethane (PU) paints are usually greater than 550g / L, and it is difficult to meet the national emission standards. Encourage the use of water-based coatings in furniture coating, and the VOC emissions of water-based coatings are usually only 100 g / L or less. The gloss of traditional polyurethane paint can easily reach 90% (60 degree angle), and it has a smooth and plump paint film. [0003] Against this background, furniture factories have switched from using polyurethane paint to water-based paint, but the development of water-based paint technology is still relatively immature, and it is difficult to achieve a gl...

Claims

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Application Information

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IPC IPC(8): C09D175/04C08G18/62
CPCC08G18/6216C08L2201/10C09D175/04C08L91/06C08K5/06
Inventor 黎呈锋练世斌戴超
Owner HUIZHOU CHANGRUNFA PAINT
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