Photocurable photochromic material and preparation method thereof

A photochromic material and photocuring technology, applied in the direction of color-changing fluorescent materials, chemical instruments and methods, optics, etc., can solve problems such as easy cracks, poor impact resistance, and narrow application range, so as to improve impact resistance and improve Weather resistance, the effect of avoiding cracks

Active Publication Date: 2018-10-12
JIANGSU MAAT OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] First, photocurable photochromic materials have poor impact resistance and are prone to fragmentation during use;
[0006] Second, light-curing photochromic materials have poor weather resistance, and cracks are prone to appear in the process of drastic changes in cold and heat;
[0007] Third, light-curing photochromic materials generally adopt the method of thermal curing, and the production cycle of thermal induction is long, often taking about 20 hours
[0008] Fourth, photocurable photochromic materials are limited by color-changing molecules, and their application range is narrow

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A light-curable photochromic material, the components and the weight percentages of each component are as follows:

[0028] Bisphenol A dimethacrylate: 30%;

[0029] Polyethylene glycol diacrylate: 55%;

[0030] Multifunctional acrylate monomer: 10%;

[0031] Photochromic dye: 1%;

[0032] The rest are modified additives. The modified additives include photoinitiators, ultraviolet absorbers, and antioxidants; the addition amount of the antioxidant is 1%, the addition amount of the ultraviolet absorber is 2%, and the photoinitiator The addition amount of the agent is 1%.

[0033] The photochromic dye may be an organic compound based on spiropyran or fulgide or fulgimide or azobenzene or viologen or spiro-oxazine or pyranyl-based organic compound.

[0034] The bisphenol A dimethacrylate is an ethoxylated bisphenol A dimethacrylate containing 2-20 repeating units with ethoxy groups.

[0035] The polyethylene glycol diacrylate is a polyethylene glycol diacrylate containing 2-20 repeati...

Embodiment 2

[0041] A light-curable photochromic material, the components and the weight percentages of each component are as follows:

[0042] Bisphenol A dimethacrylate: 70%;

[0043] Polyethylene glycol diacrylate: 10%;

[0044] Multifunctional acrylate monomer: 10%;

[0045] Photochromic dye: 1%;

[0046] The rest are modified additives, totaling 100%.

[0047] The bisphenol A dimethacrylate is a propoxylated bisphenol A dimethacrylate containing 2-20 repeating units with propoxy groups.

[0048] The polyethylene glycol diacrylate is a polyethylene glycol diacrylate with 2-20 repeating units containing propoxy groups.

[0049] The multifunctional acrylate monomer is at least one of dipentaerythritol hexaacrylate, dipentaerythritol hydroxypentaacrylate, and pentaerythritol tetraacrylate.

[0050] The modified additives include photoinitiators, stabilizers, ultraviolet absorbers, antioxidants, chain transfer agents, IR absorbers, defoamers, antistatic agents, and mold release agents; wherein the amoun...

Embodiment 3

[0055] A light-curable photochromic material, the components and the weight percentages of each component are as follows:

[0056] Bisphenol A dimethacrylate: 40%;

[0057] Polyethylene glycol diacrylate: 30%;

[0058] Multifunctional acrylate monomer: 20%;

[0059] Photochromic dye: 3%;

[0060] The rest are modified additives, totaling 100%.

[0061] The photochromic dye is an organic compound based on spiropyran or fulgide or fulgide or azobenzene or viologen or spiro-oxazine or pyranyl-based organic compound.

[0062] The bisphenol A dimethacrylate is alkoxylated bisphenol A dimethacrylate and glycerated bisphenol A dimethacrylate containing 2-20 repeating units containing epoxy groups and propoxy groups At least one of ester and bisphenol A glycerated (1-glycerol / phenol) dimethacrylate.

[0063] The polyethylene glycol diacrylate is polyethylene glycol diacrylate containing 2-20 repeating units containing ethoxy groups or polyethylene glycol diacrylate containing 2-20 repeating units...

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PUM

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Abstract

The invention discloses a photocurable photochromic material and a preparation method thereof. The components contained in the photocurable photochromic material and the weight percentage of each component are as follows: bisphenol A dimethacrylate: 30% to 70%; Polyethylene glycol diacrylate: 10% to 60%; multifunctional acrylate monomer: 10% to 30%; the rest are modifying additives, totaling 100%. The invention can not only shorten the production time of the lens from the original 20 hours to 15 minutes, but also improve its impact resistance, avoid the phenomenon that it is prone to cracking during use, and at the same time improve its weather resistance and avoid severe cold and heat. Cracks are prone to appear during the change process.

Description

Technical field [0001] The invention relates to a photocurable photochromic material and a preparation method thereof. Background technique [0002] At present, the photochromic lens itself is a high-tech product integrating multiple functions. It can not only be used as dual-purpose glasses for vision correction and sun protection, but also as protective glasses, fashion glasses, and special glasses for car driving. [0003] Photochromic lenses are black sunglasses that can replace sunglasses when exposed to sunlight. The thick black lenses can block the dazzling light, prevent direct glare, and protect the eyes; in a room with soft light Here, the photochromic lens becomes the same as the ordinary lens, transparent and colorless, and plays a very good bridge role in the transition between weak light and strong light. The color-changing lens can not only darken and brighten with the intensity of light, but also absorb ultraviolet rays that are harmful to human eyes. More than 9...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K9/02C08F222/10G02C7/10
CPCG02C7/102C09K9/02C08F222/1006C09K2211/14C08F222/1025C08F222/1063C08F222/103
Inventor 李军杜鹏
Owner JIANGSU MAAT OPTICAL CO LTD
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