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A kind of photochromic coating and its prepared photochromic coating and preparation method

A photochromic and coating technology, applied in coating, device for coating liquid on the surface, surface pretreatment, etc., can solve the problems of low curing efficiency and large solvent content, and achieve high curing efficiency and stable photoresistance. Excellent effect of color changing performance and photochromic performance

Active Publication Date: 2022-04-15
广州市科涵实业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the defects of large solvent content and low curing efficiency described in the above prior art, the present invention provides a photochromic coating, which does not contain small molecule solvents, can be cured efficiently, and has good photochromic properties. Discoloration performance

Method used

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  • A kind of photochromic coating and its prepared photochromic coating and preparation method

Examples

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Comparison scheme
Effect test

Embodiment 1

[0056] This embodiment provides a photochromic coating A and the photochromic coating A prepared therefrom.

[0057] Photochromic paint A is made up of the following components by weight:

[0058] 40 parts of acrylate oligomer, 40 parts of acrylate monomer, 4 parts of photochromic powder, 0.1 part of crosslinking agent, 2 parts of initiator, 0.1 part of leveling agent;

[0059]Wherein the acrylate oligomer is a mixture of urethane acrylate oligomer and epoxy acrylate oligomer, wherein the weight of urethane acrylate oligomer accounts for 60wt.% of the acrylate oligomer; the acrylate monomer is poly Ethylene glycol (600) di(meth)acrylate; photochromic powder is naphthopyran class color changing powder; crosslinking agent is diallyl isocyanurate; initiator is TPO; leveling agent is Polyether modified polydimethylsiloxane.

[0060] The preparation method of photochromic coating A comprises the steps:

[0061] S1. Spin-coat the photochromic coating A on the surface of the lens ...

Embodiment 2

[0066] This embodiment provides a photochromic coating B and the photochromic coating B prepared therefrom.

[0067] The difference between Example 2 and Example 1 is that the acrylate monomer is ethoxylated trimethylolpropane tri(meth)acrylate.

[0068] The preparation method of photochromic coating B is the same as that of Example 1.

Embodiment 3

[0070] This embodiment provides a photochromic coating C and the photochromic coating C prepared therefrom.

[0071] The difference between Example 3 and Example 1 is that the acrylate monomer is bisphenol A acrylate monomer.

[0072] The preparation method of photochromic coating C is the same as that of Example 1.

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Abstract

The invention discloses a photochromic coating, a photochromic coating prepared therefrom and a preparation method thereof. The photochromic coating comprises the following components: acrylate oligomer, acrylate monomer, photochromic powder, crosslinking agent, initiator, and leveling agent; the boiling point of the acrylate monomer is more than or equal to 200°C. The present invention obtains solvent-free and good, stable Coatings with photochromic properties. Through the two-step curing method, the coating substrate is firstly baked at medium temperature, and then cured by UV‑LED. The photochromic coating can be cured in a very short time, with very high curing efficiency and excellent photochromic performance. excellent.

Description

technical field [0001] The invention relates to the field of optical materials, and more specifically, to a photochromic coating, the prepared photochromic coating and a preparation method thereof. Background technique [0002] The color of the photochromic coating changes when it is irradiated by ultraviolet rays. After leaving the ultraviolet irradiation, the coating gradually returns to its original color. It is used on optical lenses to block ultraviolet light to achieve excellent light adjustment. [0003] In the prior art, in order to obtain good discoloration uniformity, the discoloration of the film layer is usually used to achieve the photochromic effect, but the general discoloration of the film layer is a thermal curing process, which has a long curing time, complicated process, and low pass rate. At the same time, due to Adding a large amount of volatile solvents is not conducive to environmental safety and environmental protection. [0004] Chinese patent appli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D4/02C09D7/63B05D1/00B05D3/02B05D3/06B05D5/06B05D7/24
CPCC09D4/00C09D7/63B05D5/06B05D7/24B05D3/0209B05D3/067B05D1/005
Inventor 陈文君汤诺诗梅若涵
Owner 广州市科涵实业有限责任公司