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Indicator material as well as preparation method and application thereof

An indicator and raw material technology, applied in the field of indicator materials and their preparation, can solve the problems of low reaction sensitivity and poor safety, and achieve the effects of simple preparation process, sunburn prevention, and fast response speed of discoloration

Active Publication Date: 2022-01-11
JIANGSU HORIEN CONTACT LENS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve this problem, the patent CN109158060A discloses a preparation method and application of a non-cracking gel with gradient color that can indicate the light time. It combines TEOS, HCl, K3Fe(CN)6 and 1-butyl-3-methylimidazolium tetrafluoroborate were placed in an open container and sealed at room temperature. Stir for several hours. After the stirring is completed, expose to the air and store the sample. After a certain period of time, a gel is formed. The gel uses the characteristics of ferricyanide ion concentration change and color change under light conditions to indicate the span of light time, but its Corrosive raw materials such as hydrochloric acid are needed in the preparation process, and the safety is poor
And its response sensitivity to light is low, and it takes more than 12 hours to respond

Method used

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  • Indicator material as well as preparation method and application thereof
  • Indicator material as well as preparation method and application thereof
  • Indicator material as well as preparation method and application thereof

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preparation example Construction

[0063] The present invention provides a preparation method for the indicator material described in the above technical solution, comprising the following steps:

[0064] The organosilicon monomer, the hydrophilic monomer, the photochromic monomer, the crosslinking agent, the initiator, the free radical scavenger and the UV absorber are mixed and polymerized to obtain the indicator material.

[0065] The present invention has no special limitation on the mixing process of the organosilicon monomer, hydrophilic monomer, photochromic monomer, crosslinking agent, initiator, free radical scavenger and UV absorber, according to well-known methods in the art The process is to mix the materials evenly. In the present invention, the polymerization temperature is preferably ≥80°C, more preferably 80-100°C, most preferably 100°C; the polymerization time is preferably 1-14h, more preferably 12h.

[0066] In the present invention, in order to shape the indicator material, the polymerizati...

Embodiment 1

[0075] Add 50 parts of 3-(3-methacryloyloxy-2-hydroxypropyl)propylbis(trimethylsiloxane)methylsilane and HEMA (hydroxyethyl methacrylate) successively into a glass beaker 35 parts, 15 parts of NVP (N-vinylpyrrolidone), 0.5 parts of ethylene glycol dimethacrylate (crosslinking agent), 0.3 parts of azobisisobutylcyanide and 1 part of spirooxazine, mix well and inject into In a polypropylene mold, polymerize at 100°C for 12 hours; after natural cooling to room temperature, demould, soak in pure water for 12 hours to obtain the indicator material.

Embodiment 2

[0077] Add 50 parts of 3-(3-methacryloyloxy-2-hydroxypropyl)propylbis(trimethylsiloxane)methylsilane, 35 parts of HEMA, 15 parts of NVP, 0.5 Parts of ethylene glycol dimethacrylate, 0.3 parts of azobisisobutyrocyanide, 1 part of spirooxazine and 2 parts of methacrylate-1,2,2,6,6-pentamethyl-4-piperidinate After mixing evenly, pour it into a polypropylene mold, polymerize at 100°C for 12 hours; let it cool down to room temperature, demould it, soak it in pure water for 12 hours, and obtain the indicator material.

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Abstract

The invention provides an indicator material as well as a preparation method and application thereof, and belongs to the technical field of high polymer materials. The indicator material provided by the invention takes a photochromic monomer as a main color-changing element, the photochromic monomer belongs to spirooxazine and derivatives thereof, and the monomer is high in color-changing sensitivity and fast in color changing, so that the indicator material is high in sensitivity to light. The indicator material is pink, does not need to be added with other coloring agents, and is easy to distinguish. The pink can improve the color changing degree of the material in the initial color changing stage. The indicator material can become blue under the irradiation of sunlight, and the blue fades along with the increase of irradiation time. Therefore, the effect of indicating the solarization time is achieved, and the purposes of prompting the safe solarization duration and preventing sunburn caused by excessive sunlight irradiation are achieved.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to an indicator material and its preparation method and application. Background technique [0002] Sunbathing is a method of exercising or preventing and treating chronic diseases by using sunlight. It mainly allows sunlight to irradiate the human skin, causing a series of physical and chemical reactions, so as to achieve the purpose of fitness and treatment. However, excessive sun exposure can burn the skin and even cause symptoms such as redness, blisters, and watering. When people are doing outdoor activities or sunbathing, they often travel lightly, and it is inconvenient to carry a mobile phone. At this time, a portable light duration indicator material is particularly important. [0003] In order to solve this problem, the patent CN109158060A discloses a preparation method and application of a non-cracking gel with gradient color that can indicate the light time. It...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F230/08C08F220/20C08F226/10C08F220/36C08F222/14C08F220/34C09K9/02
CPCC08F230/085C09K9/02C09K2211/1475C08F220/20C08F226/10C08F222/102C08F220/36C08F220/34
Inventor 王玉东陈平石婉韩雪莲
Owner JIANGSU HORIEN CONTACT LENS
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