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Preparation method and application of polyurethane optical resin

A technology of optical resin and polyurethane, which is applied in the field of polyurethane resin materials, can solve the problems of easy harm to the human body, high density, poor impact resistance, etc., and achieve the goals of improving product appearance quality, simple data analysis, and reducing defective rate Effect

Active Publication Date: 2021-02-02
WANHUA CHEM GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional optical materials are mainly inorganic glass, but there are disadvantages such as high density, poor impact resistance, and easy damage to the human body after being broken; while polymer optical materials have low density, light weight, high transparency, impact resistance, and easy molding. Processing and other characteristics, the market share of optical resin lenses has increased year by year, and the popularization of resin lenses has formed a trend

Method used

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  • Preparation method and application of polyurethane optical resin
  • Preparation method and application of polyurethane optical resin
  • Preparation method and application of polyurethane optical resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Add 50 parts by mass of m-xylylene diisocyanate (XDI, purity 99.79%) with a turbidity of 0.242 NTU into a stirred reactor, and add 0.015 parts by mass of dibutyltin dichloride as a catalyst at 25°C , 0.10 parts by mass of an acidic phosphoric acid ester (Stepan, trade name Zelec UN), and 0.05 parts by mass of an ultraviolet absorber (manufactured by Rianlon, trade name RIASORB UV531) were mixed and dissolved. And then, add 50 mass parts 1, the polythiol compound of 2-bis[(2-mercaptoethyl) thio]-3-mercaptopropane (Jingbo Chemical Industry, trade name polythiol 501), both NCO / SH The molar ratio of the groups is 1.08, and it is mixed at room temperature for 1 hour at a mixing speed of 100 rpm to form a polymerizable raw material composition. After cooling to 20° C., degassing was performed at 2 kPa (absolute pressure) and 25° C. for 1.5 hours, and poured into a lens mold. The temperature is raised from 20° C. to 120° C. in an oven for 24 hours to polymerize and solidify, ...

Embodiment 2

[0059] The isocyanate raw material used in this example is basically the same as in Example 1, except that 51 parts by mass of XDI with a turbidity of 0.35 NTU is added, and 49 parts by mass of 1,2-bis[(2-mercaptoethyl)thio]-3- The synthesis of the polymerizable raw material composition and the production operation of the plastic lens were carried out in the same manner as in Example 1 except that the molar ratio of both NCO / SH groups was 1.13 for mercaptopropane. The results are shown in Table 1.

Embodiment 3

[0061] The isocyanate raw material used in this example is basically the same as in Example 1, except that 47 parts by mass of XDI with a turbidity of 0.55 NTU is added, and 53 parts by mass of 1,2-bis[(2-mercaptoethyl)thio]-3- Mercaptopropane, the molar ratio of both NCO / SH groups is 0.96, except that this embodiment adopts the same operation as embodiment 1. The results are shown in Table 1.

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Abstract

The invention provides a polyurethane optical resin quality control method and application thereof, the preparation method comprises the step of carrying out polymerization reaction on a raw materialcomposition containing isocyanate and a polythiol compound to obtain the polyurethane optical resin, and the turbidity value of the isocyanate used in the raw material composition is controlled to beless than or equal to 2NTU. The preparation method of the polyurethane optical resin provided by the invention can effectively improve the optical performance and the appearance quality.

Description

technical field [0001] The invention belongs to the field of polyurethane resin materials, and in particular relates to a preparation method of polyurethane optical resin and its application. Background technique [0002] Optical materials are widely used to make optical components such as eyeglass lenses, windshields of aircraft and automobiles, window glass, and lenses and prisms. Traditional optical materials are mainly inorganic glass, but there are disadvantages such as high density, poor impact resistance, and easy damage to the human body after being broken; while polymer optical materials have low density, light weight, high transparency, impact resistance, and easy molding. Processing and other characteristics, the market share of optical resin lenses has increased year by year, and the popularization of resin lenses has formed a trend. [0003] Among the optical resins, polyurethane resin is the most important one, which is obtained by the polymerization reaction ...

Claims

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Application Information

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IPC IPC(8): C08G18/76C08G18/38C08K5/521C08K5/132G02B1/04
CPCC08G18/7642C08G18/3868C08K5/521C08K5/132G02B1/04C08G18/3876C08G18/757C08G18/242C08L75/04C08G18/751C08G18/758
Inventor 李建峰尚永华吴谦朱付林王鹏陈浩史培猛华卫琦黎源
Owner WANHUA CHEM GRP CO LTD