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Photochromic composition product suitable for EB curing and preparation method thereof

A technology of photochromism and composition, which is applied in the field of optical film and can solve problems such as photochromic powder damage

Active Publication Date: 2021-05-14
P&E TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is firstly to provide a kind of photochromic composition suitable for EB curing, this photochromic composition can be widely used in lens coating technology field, use EB curing technology to effectively solve the problem of UV curing process. The problem of damage to photochromic powder can also improve production efficiency and product qualification rate, thereby reducing production costs

Method used

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  • Photochromic composition product suitable for EB curing and preparation method thereof
  • Photochromic composition product suitable for EB curing and preparation method thereof
  • Photochromic composition product suitable for EB curing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1 self-made acrylate diol:

[0047]Add 50g of glycidyl methacrylate, 0.05g of 4-methoxyphenol, and 0.3g of triphenylphosphine into the container, heat up to 90°C and stir evenly, then add 40.12g of bisphenol A in four times, and add all Then keep warm at 90°C and stir for 1 hour to obtain acrylate diol, the molecular formula is as follows:

[0048]

Embodiment 21

[0051] Add 26.83g PEG1000 and 1.16g CHDM to the container and stir evenly, then vacuumize at 120°C for 1h, cool down to 60°C, add 7.94g of acrylate diol prepared in Example 1, 0.2g of dibutyltin dilaurate and 50g of dimethyl carbonate, then slowly dropwise added 14.07g of HMDI, after the dropwise addition, kept stirring at 80°C for 2 hours, then added 0.02g of 4-methoxyphenol, 2.5g of midnight gray and 2.5g of misty gray, After stirring at 80°C for 1 hour, add 0.02g of 2,6-di-tert-butyl-p-cresol, 0.02g of LOWILITE234, 0.1g of Defom2700, and 0.1g of Levaslip8629, and mix uniformly to obtain a photochromic coating composition. The photochromic coating composition is sprayed on the surface of the PC lens, rotated at 800rpm for 20 seconds, and then irradiated by a 300W infrared lamp for 2 minutes. Under the protection of nitrogen, it is cured by EB, using a voltage of 100kv, and the radiation amount 20KGy, and finally get PC photochromic lenses.

Embodiment 22

[0053] Add 26.83g PEG1000 and 1.16g CHDM to the container and stir evenly, then vacuumize at 120°C for 1h, cool down to 60°C, add 7.94g of acrylate diol prepared in Example 1, 0.2g of dibutyltin dilaurate and 50g of dimethyl carbonate, then slowly dropwise added 14.07g of HMDI, after the dropwise addition, kept stirring at 80°C for 2 hours, then added 0.02g of 4-methoxyphenol, 2.5g of midnight gray and 2.5g of misty gray, After stirring at 80°C for 1 hour, add 0.02g of 2,6-di-tert-butyl-p-cresol, 0.02g of LOWILITE234, 0.1g of Defom2700, and 0.1g of Levaslip8629, and mix uniformly to obtain a photochromic coating composition. The photochromic coating composition is sprayed on the surface of the PC lens, rotated at 800rpm for 20 seconds, and then irradiated by a 300W infrared lamp for 2 minutes. Under the protection of nitrogen, it is cured by EB, using a voltage of 120kv, and the radiation amount 50KGy, and finally get PC photochromic lenses.

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Abstract

The invention provides a photochromic composition product suitable for EB curing and a preparation method thereof, the photochromic composition product comprises polyol, acrylate diol, diisocyanate, a catalyst, a polymerization inhibitor, a diluent, photochromic powder, an antioxidant, an ultraviolet absorber, a leveling agent and a defoaming agent, a photochromic composition is obtained, a substrate material is coated with the photochromic composition, and through infrared lamp radiation, under the protection of nitrogen, EB radiation curing is carried out to form a film. According to the invention, carbon-carbon double bonds of acrylate are introduced into a polyurethane system, a plurality of flexible structures and a plurality of rigid structures are simultaneously grafted on a molecular chain segment by a prepolymerization method, and finally, the photochromic composition is well attached to the surface of a transparent substrate through EB radiation curing. The damage of ultraviolet light to the photochromic powder is avoided, and the coating curing time is shortened, so that the qualified rate of finished products is increased, and the production cost is reduced.

Description

technical field [0001] The invention belongs to the field of optical films, and in particular relates to a photochromic composition suitable for EB curing and a preparation method, which is mainly used in the production and processing of color-changing glasses and color-changing films. Background technique [0002] At present, there are two types of color-changing glasses on the market. One is the color-changing of the base material, which is to dissolve the photochromic powder in the resin or monomer, and then pour it into the mold and cure it at high temperature. This process has the following defects: 1) When the color changes, the depth of the color change is different, and the vision of panda eyes is easy to appear, which brings extremely bad visual experience to customers; 2) When preparing semi-finished products, many color-changing powders are polished in the semi-finished products 3) Due to the limitation of raw materials, this process can only produce 1.56 and 1.61...

Claims

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Application Information

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IPC IPC(8): C09D175/14C08G18/67C08G18/66C08G18/48C08G18/32C08J7/04G02B1/04G02B1/10G02C7/10C08L69/00
CPCC09D175/14C08G18/675C08G18/6674C08G18/48C08G18/3212C08J7/0427G02B1/04G02B1/10G02C7/102C08J2369/00C08J2475/14
Inventor 申立全岳绍杰户桂林周娜
Owner P&E TECH CO LTD
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