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Anti-fogging oligomer, coating composition and preparation method thereof

An oligomer and composition technology, applied in the direction of fire-resistant coatings, coatings, etc., can solve the problems of poor stability, poor anti-fog performance on the surface of transparent materials, and poor adhesion between anti-fog coatings and materials, and achieves the preparation of The method is simple and easy to implement, the appearance is good, and the effect of good heat resistance

Active Publication Date: 2017-06-23
HUNAN SOKAN NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides an anti-fog oligomer, a coating composition and a preparation method thereof to solve the problems of poor anti-fog performance on the surface of transparent materials, poor adhesion between the anti-fog coating and the material, and stability of the anti-fog coating after coating. bad technical problem

Method used

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  • Anti-fogging oligomer, coating composition and preparation method thereof
  • Anti-fogging oligomer, coating composition and preparation method thereof
  • Anti-fogging oligomer, coating composition and preparation method thereof

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preparation example Construction

[0035] The preparation method of the above-mentioned anti-fog oligomer comprises the following steps: (1) mixing the acrylic monomer containing a hydrophilic group, the aliphatic long-chain type acrylic monomer and the first acrylic monomer, and condensing and refluxing under the protection of nitrogen react to obtain a mixed solution; (2) react the mixed solution obtained in step (1) with an acrylic monomer or oligomer containing isocyanate groups under nitrogen protection to obtain an anti-fog oligomer.

[0036] The preparation method of the above-mentioned anti-fog oligomer is simple and easy, and the yield is high, and the corresponding performance requirements can be realized or highlighted by adjusting the addition amount of each reactant.

[0037] Preferably, in step (1), the reaction temperature is 60-90°C, and the time for condensation and reflux reaction is 4-8h; in step (2), the reaction temperature is 60-90°C, and the reaction time is 1-6h.

[0038] The coating com...

Embodiment 1

[0057] A kind of anti-fog oligomer of the present invention, after being polymerized by the acrylic acid monomer containing sulfonic acid group, the acrylic acid monomer containing hydroxyl group and amino group, isooctyl acrylate, and (bisacryloyloxymethyl) ethyl isocyanate The reaction is obtained; the weight average molecular weight of the anti-fog oligomer is 5,000-100,000.

[0058] In this embodiment, the anti-fog oligomer is obtained by reacting the following mass percentages of acrylic monomers: the mass percentage of acrylic monomers containing sulfonic acid groups is 31.3%, and the total of acrylic monomers containing hydroxyl and amino groups is The mass percentage is 33%, the mass percentage of isooctyl acrylate is 25%, and the mass percentage of (bisacryloyloxymethyl) ethyl isocyanate is 10.7%.

[0059] In this embodiment, the acrylic acid monomer containing sulfonic acid groups is 2-acrylamide-2-methylpropanesulfonic acid.

[0060] In this embodiment, the acrylic...

Embodiment 2

[0070] A kind of anti-fog oligomer of the present invention, by containing the acrylic acid monomer of quaternary ammonium salt group, containing the acrylic acid monomer of hydroxyl and amino group, isooctyl acrylate and lauryl acrylate polymerization, with (bisacryloyloxy It is obtained by reacting methyl) ethyl isocyanate; the weight average molecular weight of the anti-fog oligomer is 5,000-100,000.

[0071] In this embodiment, the anti-fog oligomer is obtained by reacting the following mass percent acrylic monomers: the mass percent of acrylic monomers containing quaternary ammonium salt groups is 26.8%, and the acrylic monomers containing hydroxyl and amino groups The total mass percentage is 37.5%, the total mass percentage of isooctyl acrylate and lauryl acrylate is 25%, and the mass percentage of (bisacryloyloxymethyl) ethyl isocyanate is 10.7%.

[0072] In this embodiment, the acrylic monomer containing a quaternary ammonium salt group is methacryloyloxyethyltrimethy...

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Abstract

The invention discloses an anti-fogging oligomer. The anti-fogging oligomer is obtained by polymerizing one or a mixture of multiple of acrylic monomers containing hydrophilic groups, acrylic monomers containing hydroxyl, carboxyl and amino and an aliphatic long-chain type acrylic monomer, and reacting with an isocyanate group-containing acrylic monomer or oligomer; the weight-average molecular weight of the anti-fogging oligomer is 2,000 to 100,000. The invention also discloses a coating composition comprising the anti-fogging oligomer and preparation methods of the anti-fogging oligomer and the coating composition. The anti-fogging oligomer can be coated on the surface of a transparent substrate directly or serving as part of the coating composition; the anti-fogging oligomer can be cured by using ultraviolet light after the contained hydroxyls, carboxyl or amino are reacted with the contained isocyanate groups; the contained hydroxyls, carboxyl or amino can also improve the adhesion force between the anti-fogging oligomer and the substrate; the anti-fogging oligomer has good hydrolysis resistance because of the aliphatic long-chain type acrylic monomer; the coating composition has good anti-fogging performance and has great adhesion force with the substrate.

Description

technical field [0001] The invention relates to the field of anti-fog coatings, in particular to an anti-fog oligomer for improving the anti-fog performance of the surface of a transparent material, a coating composition and a preparation method thereof. Background technique [0002] In daily life, due to differences in temperature and humidity, small water droplets in the environment tend to condense on the surface of transparent materials, forming many spherical tiny water droplets, which cause fog on the surface of transparent materials; and these tiny water droplets will cause irregular scattering of light , reflection and diffraction, thus significantly affecting the transmission ability of light. At present, the anti-fog methods of transparent materials mainly include: (1) direct infiltration method of surfactant; (2) direct coating method of surfactant; (3) polymer coating method. The transparent material obtained by the first two methods has poor anti-fog stability,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/38C08F220/22C08F220/18C08F220/54C08F220/28C08F220/06C08F220/36C08F220/14C09D133/14C09D133/16C09D7/12
CPCC09D7/61C09D7/63C09D7/65C09D133/14C09D133/16C08F220/18C08F220/22C08F220/38C09D5/18C08L2205/02C08L2205/03C08K2201/014C08F220/1808C08F220/382C08L83/04C08K13/02C08K5/101C08K5/42C08K2003/2241C08K3/36C08F220/281C08F220/36C08F220/54C08F220/06C08F220/1805C08F220/14
Inventor 罗映兵张解红
Owner HUNAN SOKAN NEW MATERIAL
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