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Transparent polyurethane composition with visible gelling characteristic and preparation method

A composition, polyurethane technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of easy peeling, poor water dispersibility, no protection and decorative performance, etc., to ensure construction quality, easy mixing and uniformity, high market The effect of practical value

Active Publication Date: 2017-08-29
NIPPON PAINT CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the activation period is exceeded, the mixed solution is still in a liquid state, and the user cannot detect that the mixed solution is no longer usable, so it will continue to be used by the builder
Under such circumstances, the paint film formed by construction and coating has no protective and decorative properties, and it is easy to fall off and cause sickness; at the same time, most of the current water-based curing agents have the problem of poor water dispersibility, and often require high-speed shear dispersion to mix evenly

Method used

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  • Transparent polyurethane composition with visible gelling characteristic and preparation method
  • Transparent polyurethane composition with visible gelling characteristic and preparation method
  • Transparent polyurethane composition with visible gelling characteristic and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088] Prepare component A and component B according to the ingredients and weight percentages shown in Table 1.

[0089] Table 1 Components and percentage by weight

[0090]

[0091] a. Prepare the main paint of component A: first add hydroxyacrylate dispersion resin, polyurethane dispersion resin, and water with a total weight of 50% in the dispersion tank; carry out medium-speed dispersion at 600-650r / min; then slowly Add matting slurry; disperse at a high speed of 1000-1200r / min for 10-15 minutes, then add wetting agent, thickener, defoamer, leveling agent, anti-settling agent, preservative in the tank and the remaining water, medium speed After dispersing for 15-25 minutes, take a sample to test that the fineness of the finished product is in the range of 20-35um, the viscosity is in the range of 45-55KU, filter, fill in cans, and pack.

[0092] The matting pulp is a mixture of water, acrylic polymer dispersant EDAPLAN-480, organic amine pH regulator AMP-95, matting p...

Embodiment 2

[0096] Prepare component A and component B according to the ingredients and weight percentages shown in Table 1.

[0097] a. Preparation of component A main paint: first add hydroxyacrylate dispersion resin, polyurethane dispersion resin, and water with a total weight of 50% in the dispersion tank; carry out medium-speed dispersion at 650-800r / min; then slowly Add matting slurry; disperse at high speed of 1200-1500r / min for 10-15min, then add wetting agent, thickener, defoamer, leveling agent, anti-settling agent, preservative in the tank and the remaining water, medium speed After dispersing for 15-25 minutes, take a sample to test that the fineness of the finished product is in the range of 20-35um, the viscosity is in the range of 45-55KU, filter, fill in cans, and pack.

[0098] The matting pulp is a mixture of water, acrylic polymer dispersant EDAPLAN-480, organic amine pH regulator AMP-95, matting pulp defoamer TEGO Foamex 810, propylene glycol, fumed silica matting powd...

Embodiment 3

[0102] Prepare component A and component B according to the ingredients and weight percentages shown in Table 1.

[0103] a. Preparation of component A main paint: first add hydroxyacrylate dispersion resin, polyurethane dispersion resin, and water with a total weight of 50% in the dispersion tank; carry out medium-speed dispersion at 700-800r / min; then slowly Add matting slurry; disperse at a high speed of 1200-1400r / min for 10-15min, then add wetting agent, thickener, defoamer, leveling agent, anti-settling agent, preservative in the tank and the remaining water, medium speed After dispersing for 15-25 minutes, take a sample to test that the fineness of the finished product is in the range of 20-35um, the viscosity is in the range of 45-55KU, filter, fill in cans, and pack.

[0104] The matting pulp is a mixture of water, acrylic polymer dispersant EDAPLAN-480, organic amine pH regulator AMP-95, matting pulp defoamer TEGO Foamex 810, propylene glycol, fumed silica matting po...

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Abstract

The invention discloses a transparent polyurethane composition with visible gelling characteristic and a preparation method. The transparent polyurethane composition comprises the ingredients in parts by weight as shown in the claims and the description: hydroxyl polyacrylate dispersion resin, a waterborne polyurethane dispersion, extinction slurry, a humectant, an antifoamer, a thickener, a leveling agent, an anti-settling agent, a preservative agent and water. Varnish main paint prepared from the ingredients is mixed with a curing agent, liquid paint is gelled after an activation period, the gelling plays a role in timely reminding constructors, then, the quality of construction is guaranteed, and thus, the transparent polyurethane composition has an extremely high market practical value.

Description

technical field [0001] The invention relates to a water-based two-component wood varnish, in particular to a transparent polyurethane composition with visible gelling characteristics and a preparation method thereof. Background technique [0002] Since the beginning of the 21st century, with the continuous enhancement of people's awareness of environmental protection and health, the restrictions on VOC in various countries' environmental protection regulations have gradually become stricter, and solvent-based wood coatings have been challenged unprecedentedly. From the perspective of environmental protection, water-based coatings are increasingly becoming a research and development hotspot. In China, the average annual growth rate of water-based wood coatings has exceeded 15% in the past five years. Water-based wood coatings have become a future development trend to replace traditional solvent-based coatings. [0003] Although traditional one-component water-based wood coat...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D7/12C08L33/14C08L75/04C08L83/12C08K13/02C08K5/053C08K3/36C08G18/62
CPCC08G18/6225C08L33/14C08L2201/10C08L2205/025C08L2205/035C09D7/61C09D7/63C09D175/04C08L75/04C08L83/12C08K13/02C08K5/053C08K3/36
Inventor 高建东徐霭莹
Owner NIPPON PAINT CHINA
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