A kind of photochromic composition and application

A technology of photochromism and composition, which is applied in applications, color-changing fluorescent materials, household appliances, etc., and can solve the problems of poor light fastness and high cost

Active Publication Date: 2019-02-15
中国中化股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In order to overcome the shortcomings of poor light fastness and high cost in the existing photochromic composition, the present invention provides a photochromic composition and its application

Method used

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  • A kind of photochromic composition and application
  • A kind of photochromic composition and application
  • A kind of photochromic composition and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Preparation of photochromic composition 1: Photochromic compound A 0.03g, anionic water-based polyurethane WPU-1, solid content 35(w)%, 3.4g, obtained after uniform mixing.

[0062]

[0063] Synthesis of waterborne polyurethane WPU-1:

[0064] Add dehydrated polycarbonate diol (molecular weight 1000, hydroxyl value KOH 110mg / g, industrial grade, Qingdao Deqing Chemical) and hexamethylene diol into a four-necked flask equipped with an electric stirrer, a thermometer, and a reflux condenser. Isocyanate (reagent grade, Shanghai Ziyi Reagent Factory), gradually heated up to 60-65°C, and reacted for about 2 hours. Add the hydrophilic chain extender DMPA (2,2-dimethylolbutyric acid), raise the temperature to about 80°C, and add acetone to dilute. Then, when the temperature is lowered to 30-40°C, slowly add deionized water under high-speed stirring for emulsification. The acetone was removed under vacuum to obtain polyester anionic emulsion WPU-1 with a solid content of 3...

example 2

[0070] Preparation of photochromic composition 2: photochromic compound B0.04g, anionic waterborne polyurethane WPU-2, solid content 38%, 2.0g, magnesium oxide 0.2g, 1,2,3-benzotriazole 0.015g , adjusted to pH=7.5 with ammonia water, obtained after mixing uniformly.

[0071]

[0072] Synthesis of waterborne polyurethane WPU-2:

[0073] Add dehydrated polycaprolactone polyol (molecular weight 1000, hydroxyl value KOH330~350mg / g, industrial grade, Japan Daicel Chemical) and hydrogenated benzene Dimethylene diisocyanate (Takenate 600, Bayer Company), gradually heated up to 60-65°C, and reacted for about 2.0 hours. Add the chain extender 1,4-butanediol, raise the temperature to about 80°C, and add acetone to dilute. Then, when the temperature is lowered to 30-40°C, slowly add deionized water under high-speed stirring for emulsification. The acetone was removed under vacuum to obtain polyester anionic emulsion WPU-2 with a solid content of 38%.

[0074] Preparation of photoc...

example 3

[0079] Preparation of photochromic composition 3: Photochromic compound C0.001g, nonionic waterborne polyurethane WPU-3: 2.1g, solid content 40%, zinc oxide 0.2g, aluminum oxide 0.2g, obtained after mixing uniformly.

[0080]

[0081] Synthesis of waterborne polyurethane WPU-3:

[0082] Add dehydrated polyether diol (N-210, industrial grade, Tianjin Petrochemical Company No. Inject dry nitrogen, start stirring and gradually heat up to 70°C, add isophorone diisocyanate (IPDI, industrial grade, Shanghai Jinjinle Industrial Co., Ltd.) dropwise, add dibutyltin dilaurate and ethylene glycol, and react for about 3 hours; Add polyethylene glycol monomethyl ether and react for about 0.5 hours; cool down to below 15°C, slowly add deionized water under high-speed stirring for emulsification. The acetone was removed under reduced pressure under vacuum to obtain a nonionic aqueous polyurethane dispersion WPU-3 with a solid content of 40%.

[0083] Preparation of Photochromic Article ...

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Abstract

The present invention relates to an organic photochromic material, particularly to a photochromic composition and applications thereof, wherein the composition comprises a photochromic compound and a polymer, the photochromic compound is one or a plurality of materials selected from naphthopyran photochromic compounds, the polymer is selected from an aqueous polyurethane, and the adding amount of the photochromic compound accounts for 0.1-10% of the dry weight mass of the polymer. According to the present invention, the composition has excellent photochromic property, has high color change sensitivity in visible light or ultraviolet ray radiation, provides significantly-improved light fastness compared with the previous photochromic composition, and has the reduced cost.

Description

technical field [0001] The invention relates to an organic photochromic material, in particular to a photochromic composition and its application. Background technique [0002] Organic photochromic materials have attracted widespread attention due to their reversible photochromic properties under the action of sunlight or ultraviolet light. They have been applied to substrates such as plastics and glass to prepare optical lenses, sunglasses, anti-counterfeiting inks, and textiles. , Building exterior wall coatings, interior decoration materials, films, handicrafts, toys, CDs, etc. [0003] Although organic photochromic substances have various applications as mentioned above, it has been found through practical applications and patent reports that there are many problems in their industrial applications. [0004] There are two factors that limit the widespread application of organic photochromic substances. One is that the light fastness of such substances is insufficient, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/04C08K5/1545C08K5/357C09K9/02C09D11/50C09D175/04C09D7/63B32B33/00
Inventor 邢颖郭林林珑刘月中丹尼尔·霍尔鄂彦鹏
Owner 中国中化股份有限公司
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