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Photochromic composition of hyper-branched polyurethane vinyl ether, product and preparation method

A polyurethane vinyl ether and photochromic technology, applied in the field of optical films, can solve the problems of large cost burden, waste of discolored powder, easy to appear panda eye vision, etc., and achieve the effects of improving solvent resistance and increasing crosslinking density.

Active Publication Date: 2021-04-27
P&E TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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; It was wasted during grinding, causing a huge cost burden; 3) Due to the limitation of raw materials, this process can only produce 1.56 and 1.61 lenses, and cannot produce 1.67 or 1.71 high value-added lenses
The main reason is that the photochromic powder has a certain lifespan, and it will turn yellow or even lose its ability to fade under the ultraviolet light with high radiation intensity.

Method used

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  • Photochromic composition of hyper-branched polyurethane vinyl ether, product and preparation method
  • Photochromic composition of hyper-branched polyurethane vinyl ether, product and preparation method
  • Photochromic composition of hyper-branched polyurethane vinyl ether, product and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 11

[0044]Add 10g PEG400 to the container, vacuumize at 120°C for 1 hour, cool down to 60°C, add 16.67g IPDI, 55g ethyl acetate and 0.2g DBTDL, heat up to 70°C and keep stirring for 2 hours, cool down to 60°C, slowly drop 1.02g glycerol, heat up to 70°C and keep stirring for 2 hours, cool down to 60°C, slowly add 0.76g pentaerythritol dropwise, heat up to 70°C and keep stirring for 2 hours, test that the NCO content is 2.25%, add 0.02g MEHQ and 5.2g 4-Hydroxybutyl vinyl ether, heat up to 80°C and keep stirring for 2 hours, then add 3.5g midnight gray and 3.5g misty gray, heat up to 90°C and keep stirring for 1 hour, finally add 0.1g BYK1790, 0.1g BYK333, 5.46g PETMP , 0.02gBHT, 0.02g Tinuvin 329, mixed uniformly to obtain a photochromic composition of hyperbranched polyurethane vinyl ether, the refractive index is 1.554. Spray the photochromic coating composition on the surface of the PC lens, rotate at 800rpm for 20 seconds, and then irradiate with a 300W infrared lamp for 2 minu...

Embodiment 12

[0046] Add 10g PEG400 to the container, vacuumize at 120°C for 2 hours, cool down to 60°C, add 16.67g IPDI, 55g ethyl acetate and 0.2g DBTDL, heat up to 70°C and keep stirring for 2 hours, cool down to 60°C, slowly drop 1.02g glycerol, heat up to 70°C and keep stirring for 2 hours, cool down to 60°C, slowly add 0.76g pentaerythritol dropwise, heat up to 70°C and keep stirring for 2 hours, test that the NCO content is 2.25%, add 0.02g MEHQ and 5.2g 4-Hydroxybutyl vinyl ether, heat up to 80°C and keep stirring for 2 hours, then add 3.5g midnight gray and 3.5g misty gray, heat up to 90°C and keep stirring for 1 hour, finally add 0.1g BYK1790, 0.1g BYK333, 5.46g PETMP , 0.02gBHT, 0.02g Tinuvin 329, mixed uniformly to obtain a photochromic composition of hyperbranched polyurethane vinyl ether, the refractive index is 1.554. Spray the photochromic coating composition on the surface of the PC lens, rotate at 800rpm for 20 seconds, and then irradiate with a 300W infrared lamp for 2 mi...

Embodiment 21

[0049] Add 10g PEG600 to the container, vacuumize at 120°C for 1 hour, cool down to 60°C, add 16.67g IPDI, 51.2g ethyl acetate and 0.2g DBTDL, heat up to 70°C and keep stirring for 2 hours, cool down to 60°C, slowly Add 1.19g of glycerol dropwise, heat up to 70°C and keep stirring for 2 hours, cool down to 60°C, slowly add 0.66 pentaerythritol dropwise, heat up to 70°C and keep stirring for 2 hours, test that the NCO content is 3.0%, add 0.02g MEHQ and 6.79 g 4-hydroxybutyl vinyl ether, heat up to 80°C and keep stirring for 2 hours, then add 3.5g midnight gray and 3.5g misty gray, heat up to 90°C and keep stirring for 1 hour, finally add 0.1g BYK1790, 0.1g BYK333, 6.5 gPETMP, 0.02gBHT, and 0.02g Tinuvin 329 were uniformly mixed to obtain a photochromic composition of hyperbranched polyurethane vinyl ether, with a refractive index of 1.554. Spray the photochromic coating composition on the surface of the PC lens, rotate at 800rpm for 20 seconds, and then irradiate with a 300W i...

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Abstract

The invention provides a photochromic composition of hyper-branched polyurethane vinyl ether, a product and a preparation method. The composition comprises polyol, diisocyanate, a solvent, a catalyst, trihydric alcohol, tetrahydric alcohol, a polymerization inhibitor, 4-hydroxybutyl vinyl ether, a leveling agent, an anti-foaming agent, an ultraviolet absorber, an antioxidant, mercaptan and a photochromic dye. A substrate material is coated with the composition, and an optical product is prepared through EB curing. The preparation method comprises the following steps: firstly, pre-polymerizing diisocyanate and polyhydric alcohol into an oligomer, then polymerizing trihydric alcohol and tetrahydric alcohol into a polyurethane prepolymer with a hyper-branched structure in sequence, and then blocking by adopting 4-hydroxybutyl vinyl ether to obtain hyper-branched polyurethane containing vinyl ether; and finally, mixing with mercaptan and photochromic fuel to obtain the radiation curable composition. The composition has relatively high refractive index, oxygen inhibition resistance and excellent adhesive force performance.

Description

technical field [0001] The invention belongs to the field of optical films, and in particular relates to a hyperbranched polyurethane vinyl ether photochromic composition, product and preparation method, which are 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; 3) Due to the limitation of raw materials, this process can only produce 1.56 and 1.61 lenses, and cannot produce 1.67 or 1.71 high value-added lenses. [0003] Coating disco...

Claims

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Application Information

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IPC IPC(8): C09D175/14C08G18/83
CPCC09D175/14C08G18/831
Inventor 申立全岳绍杰户桂林周娜
Owner P&E TECH CO LTD
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