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Water double-component fatty polyurethane coating

An aliphatic polyurethane, water-based two-component technology, used in polyurea/polyurethane coatings, coatings, latex paints, etc.

Inactive Publication Date: 2005-02-23
HUIHAO POLYTECHNIC COATING SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the existing problems of single-component and two-component water-based polyurethane coatings in the prior art, and provide a paint film with high gloss, wear resistance, scratch resistance, resistance to various organic solutions and chemical corrosion, and water resistance. Water-based two-component aliphatic polyurethane coating, which is non-toxic, odorless, UV-resistant, and yellow-resistant

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0011] Get 70 kg of commercially available water-based polyurethane carboxylic acid resin solution, 15 kg of commercially available acrylic emulsion, 14.6 kg of deionized water, and 0.4 kg of additives, wherein the additives are water-based leveling agents, defoamers, and surface additives. In the container of component A, stir at a low speed to form component A for use. Pour 2.5 kg of the multi-component aziridine solution of group B into the container of component A and then brush it. After the cross-linking reaction occurs, the aziridine Pyridine reacts with the carboxylic acid group in the aqueous polyurethane carboxylic acid resin solution to form a covalent bond, and its reaction process is divided into two steps, (1) the acid group is used as a catalyst to activate the aziridine by the N proton on the aziridine, (2 ) The negatively charged carboxylic acid group acts on the activated positively charged aziridine ring. After the ring is opened, the multi-component aziridin...

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PUM

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Abstract

This invention involves a heavy water type polyurethane of a fat clan of one pair of groups Coating, its characteristic lies in that A, two groups of one of B, its weight mixing To A:B=1000:27; one of group A is by the following groups Become things and weight percentage to make up, Polyurethane Xuan acid and resin of swimming skill solution is 60%-70%. Acrylic acid cream is 12%-20%, deionized water 15%-18%, additive is 0.4%; B The group one is plural third pyridine of nitrogen Solution, its molecular formula: C22H33O7, the stated additive is Flat pharmaceutical flows in swimming skill, disappear and steep the pharaceutical, surface auxiliary. Advantage of this invention Paint the membrane gloss high, wear-resisting, resist and row, able to bear many kinds of organic solution and chemistry to corrode, is also to bear Water, nonpoisonous, resist the ultraviolet ray, tastelessy, able to bear the yellow to change.

Description

technical field [0001] The invention relates to a water-based polyurethane paint, in particular to a water-based two-component aliphatic polyurethane paint. Background technique [0002] At present, the water-based polyurethane coatings used in home decoration have been developed earlier and have the advantage of being convenient to use, but there are defects in the solvent resistance, chemical corrosion resistance and water resistance of the paint film. For this reason, some existing two-component water-based polyurethane The coating has been applied, and it can overcome the problems of the above-mentioned single-component waterborne polyurethane coating, but because the A group it adopts is a hydrophilic hydroxyl resin solution, and the B component is an isocyanate adduct crosslinking agent, which contains Free isocyanate, this substance is toxic and can irritate the respiratory system after inhalation. Excessive amount will cause breathing difficulties. Secondly, the hydr...

Claims

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Application Information

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IPC IPC(8): C09D5/02C09D175/04
Inventor 李明良
Owner HUIHAO POLYTECHNIC COATING SHANGHAI
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