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A kind of room temperature ketone hydrazine cross-linking non-voc water-based paint and preparation method thereof

A water-based coating, cross-linking modification technology, applied in the direction of coating, etc., can solve the problems of water resistance, alcohol resistance and insufficient hardness, etc., achieve the effect of good transparency, high adhesion, and reduce product cost

Active Publication Date: 2016-09-14
河北越超化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PUA emulsion is still insufficient in terms of water resistance, alcohol resistance and hardness when used as a base material for high-grade wood coatings.

Method used

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  • A kind of room temperature ketone hydrazine cross-linking non-voc water-based paint and preparation method thereof
  • A kind of room temperature ketone hydrazine cross-linking non-voc water-based paint and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A room-temperature ketone-hydrazine cross-linked VOC-free water-based coating, comprising: 100 parts of ketone-hydrazine cross-linked modified polyurethane-polyacrylate microemulsion, 0.3 parts of wetting agent, 0.2 parts of leveling agent, thickener 0.5 parts, 0.2 parts of defoamer, 6 parts of lauryl alcohol ester and 1 part of polishing agent.

[0037]A method for preparing a VOC-free water-based paint cross-linked with ketone-hydrazine at room temperature: in parts by mass, 100 parts of ketone-hydrazine cross-linked modified polyurethane-polyacrylate microemulsion, 0.3 part of wetting agent, 0.2 part of leveling agent, Put 0.5 parts of thickener, 0.2 parts of defoamer, 6 parts of lauryl alcohol ester, and 1 part of polishing agent together, stir, and fully disperse until the fineness is less than 3 microns, that is, a room temperature ketone hydrazine crosslinked VOC-free water-based coating is obtained.

[0038] Wherein, the preparation technology of ketone hydrazin...

Embodiment 2

[0044] A room temperature ketone hydrazine cross-linked VOC-free water-based coating, comprising: 100 parts of ketone hydrazine cross-linked modified polyurethane-polyacrylate microemulsion, 0.4 part of wetting agent, 0.4 part of leveling agent, thickener 0.6 parts, 0.25 parts of defoamer, 7 parts of lauryl alcohol ester and 1.3 parts of polishing agent.

[0045] A method for preparing a VOC-free water-based paint cross-linked with ketone-hydrazine at room temperature: in parts by mass, 100 parts of ketone-hydrazine cross-linked modified polyurethane-polyacrylate microemulsion, 0.4 part of wetting agent, 0.4 part of leveling agent, Put 0.6 parts of thickener, 0.25 parts of defoamer, 7 parts of lauryl alcohol ester, and 1.3 parts of polishing agent together, stir, and fully disperse until the fineness is less than 3 microns, so as to obtain room temperature ketone hydrazine cross-linked VOC-free water-based paint.

[0046] Wherein, the preparation technology of ketone hydrazine...

Embodiment 3

[0052] A room-temperature ketone-hydrazine cross-linked VOC-free water-based coating, comprising: 150 parts of ketone-hydrazine cross-linked modified polyurethane-polyacrylate microemulsion, 0.6 part of wetting agent, 0.4 part of leveling agent, thickener 0.6 parts, 0.3 parts of defoamer, 7 parts of lauryl alcohol ester and 1.5 parts of polishing agent.

[0053] A method for preparing a VOC-free water-based paint cross-linked with ketone hydrazine at room temperature: in parts by mass, 150 parts of ketone hydrazine cross-linked modified polyurethane-polyacrylate microemulsion, 0.6 part of wetting agent, 0.4 part of leveling agent, Put 0.6 parts of thickener, 0.3 parts of defoamer, 7 parts of lauryl alcohol ester, and 1.5 parts of polishing agent together, stir, and fully disperse until the fineness is less than 3 microns, that is, a room temperature ketone hydrazine cross-linked VOC-free water-based coating is obtained.

[0054] Wherein, the preparation technology of ketone hy...

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Abstract

The invention relates to a room-temperature ketone-hydrazine-crosslinked VOC (Volatile Organic Compounds)-free water-based paint and a preparation method thereof. The preparation method comprises the following steps: by taking a vinyl monomer as a continuous phase, preparing a mixture of an unsaturated-double-bond-capped hydrophilic polyurethane prepolymer and a vinyl monomer; adding water to carry out self-emulsifying to form a polyurethane dispersion liquid; then, copolymerizing an acrylic monomer and polyurethane macromolecules in the water dispersion liquid; meanwhile, introducing ketone and carbonyl groups into a polyurethane macromolecular chain in the preparation process, so that cross-linking reaction is carried out on ketone and carbonyl groups of the macromolecular chain and hydrazine to prepare a polyurethane microemulsion with a crosslinked structure; and adding a wetting agent, a flatting agent, a coalescing agent, a defoamer, a thickener and a polishing aid to the polyurethane microemulsion. The product prepared by the invention is curable at room temperature, free of free TDI (Toluene Diisocynate) and free of VOC, has the advantages of no toxicity, high safety, high gloss uniformity, high adhesive force, high hardness, wear resistance, good transparency, good fullness, good hand feeling and the like and meanwhile further has good decorative and protective effects.

Description

technical field [0001] The invention relates to a room-temperature self-crosslinking water-based coating and a preparation method thereof, in particular to a room-temperature ketone-hydrazine cross-linking non-VOC water-based coating and a preparation method thereof. Background technique [0002] With the improvement of environmental laws and regulations and the strengthening of people's awareness of environmental protection, the scope of use of solvent-based coatings is limited, and research on water-based coatings is increasingly valued. Waterborne polyurethane is a film-forming resin with excellent performance. In the 1970s, the self-emulsification preparation method of polyurethane emulsion was developed. The current research focuses on its modification, among which acrylate modified polyurethane is the most common. The water-based polyurethane-acrylate (PUA) prepared by the copolymerization method comprehensively utilizes the excellent weather resistance of acrylate and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D151/08C08F283/00C08G18/67
Inventor 王海花姜春阳费贵强沈一丁朱科
Owner 河北越超化工科技有限公司