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Photochromic composition and applications thereof

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

Active Publication Date: 2016-05-25
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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  • Photochromic composition and applications thereof
  • Photochromic composition and applications thereof
  • Photochromic composition and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0062]

[0063] Synthesis of water-based polyurethane WPU-1:

[0064] Add dehydrated polycarbonate diol (molecular weight 1000, hydroxyl value KOH110mg / g, industrial grade, Qingdao Deqing Chemical Industry) and hexamethylene diol into a four-necked flask equipped with an electric stirrer, thermometer and reflux condenser. Isocyanate (reagent grade, Shanghai Ziyi Reagent Factory), gradually increase the temperature to 60~65℃, and react for about 2 hours. Add the hydrophilic chain extender DMPA (2,2-Dimethylolbutyric acid), raise the temperature to about 80°C, add acetone to dilute. Then, when the temperature is lowered to 30-40°C, deionized water is slowly added under high-speed stirring for emulsification. The acetone was removed under vacuum and reduced pressure to obtain polyester anionic emulsion WPU-1 wit...

example 2

[0070] Preparation of photochromic composition 2: 0.04g of photochromic compound B, anionic water-based polyurethane WPU-2, solid content 38%, 2.0g, magnesium oxide 0.2g, 1,2,3-benzotriazole 0.015g , Adjust pH=7.5 with ammonia water, and get it after mixing uniformly.

[0071]

[0072] Synthesis of water-based polyurethane WPU-2:

[0073] Add dehydrated polycaprolactone polyol (molecular weight 1000, hydroxyl value KOH330~350mg / g, industrial grade, Japanese Daicel Chemical) and hydrogenated benzene into a four-necked flask equipped with electric stirrer, thermometer and reflux condenser. Dimethylene diisocyanate (Takenate600, Bayer) is gradually heated to 60-65°C and reacted for about 2.0 hours. Add chain extender 1,4-butanediol, heat to about 80°C, add acetone to dilute. Then, when the temperature is lowered to 30-40°C, deionized water is slowly added under high-speed stirring for emulsification. The acetone was removed under vacuum and reduced pressure to obtain polyester anio...

example 3

[0079] Preparation of photochromic composition 3: photochromic compound C0.001g, non-ionic water-based polyurethane WPU-3: 2.1g, solid content 40%, zinc oxide 0.2g, alumina 0.2g, mixed uniformly.

[0080]

[0081] Synthesis of water-based polyurethane WPU-3:

[0082] Add dehydrated polyether glycol (N-210, industrial grade, third petrochemical plant of Tianjin Petrochemical Company) into a four-necked flask equipped with electric stirrer, thermometer and reflux condenser, add a certain amount of acetone, Enter dry nitrogen, start stirring and gradually increase the temperature 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; lower the temperature to below 15°C, slowly add deionized water under high-speed stirring for emulsification. The acetone is removed under vacuum and re...

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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 application. Background technique [0002] Organic photochromic materials have aroused widespread concern 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, membranes, handicrafts, toys, CDs, etc. [0003] Although organic photochromic substances have various applications as mentioned above, it has been found that there are many problems in industrial applications through practical applications and patent reports. [0004] There are two factors that limit the wide application of organic photochromic substances. One is the insufficient light fastness of this type of substance. Most of the photochromic d...

Claims

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Application Information

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IPC IPC(8): C08L75/04C08K5/1545C08K5/357C09K9/02C09D11/50C09D175/04C09D7/12B32B33/00
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