Two-component polyurethane finish paint and preparation method thereof

A two-component polyurethane and polyurethane dispersion technology, applied in the field of coatings, can solve the problems of unsatisfactory paint film performance and slow crosslinking speed, and achieve the effects of low cost, improved water resistance, and improved stability
CN110607121AInactive Publication Date: 2019-12-24HEBEI CHENYANG INDAL & TRADE GROUP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HEBEI CHENYANG INDAL & TRADE GROUP CO LTD
Publication Date
2019-12-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a two-component polyurethane finish paint and a preparation method thereof. The two-component polyurethane finish paint comprises a component A and a component B, wherein the component A comprises: 35-50% of a water-based hydroxy acrylic acid dispersion, 5-20% of a water-based self-crosslinking polyurethane dispersion, 5-15% of casein emulsion, 0.5-1.5% of a wetting dispersant, 0.1-0.5% of an antifoaming agent, 5-23% of a pigment, 0.5-1% of a leveling agent, 0.1-0.3% of a base material wetting agent, 0.1-0.5% of a thickening agent and 10-15% of deionized water. The component B is prepared from a waterborne polycarbodiimide curing agent, and the mass ratio of the component A to the component B is (10-20):1. The two-component polyurethane finish paint provided by theinvention has the advantages of high drying speed, high paint film hardness, good water resistance and wear resistance, extremely low VOC content, long construction validity period of the paint, convenience in storage and wide market prospect.
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Description

technical field

[0001] The invention relates to the technical field of coatings, in particular to a two-component polyurethane topcoat and a preparation method thereof. Background technique

[0002] Water-based paint is an environmentally friendly paint, which represents one of the development trends of the paint industry, and its application range is getting wider and wider. There are deficiencies in wiping etc. The application of cross-linking technology in water-based coatings can greatly improve the overall performance of the coating film, and gradually reduce the gap between water-based coatings and solvent-based coatings.

[0003] Water-based two-component polyurethane topcoat is a product that has been widely used in recent years. Generally, isocyanate is used as a curing agent. It can be combined with hydroxyacrylic acid dispersion to make a two-component polyurethane coating. Widely used in industrial surface decoration and wood surface. However, due to the react...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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