Optical polycarbonate and preparation method thereof

A technology of polycarbonate resin and carbon number, which is applied in the field of optical polycarbonate for optical lenses and its preparation, and can solve problems such as technologies and manufacturing methods that have not yet provided industrialization prospects.

Pending Publication Date: 2020-08-04
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] As mentioned above, with the development of thinner, thinner and smaller optical lenses, the demand for optical resins with a refractive index greater than 1.7 will increase significantly. At present, no technology and manufacturing methods with industrial prospects have been provided in the technical literature.

Method used

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  • Optical polycarbonate and preparation method thereof
  • Optical polycarbonate and preparation method thereof
  • Optical polycarbonate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] 28.322g (0.049mol) raw material A1, 8.03g (0.011mol) raw material A3, 22.48g (0.04mol) raw material C3, 22.042g (0.103mol) diphenyl carbonate, 32.58μg (1×10 -6 mol) cesium carbonate into a 200ml four-neck flask equipped with a stirrer and a distillation device, replaced with nitrogen 5 times, heated to 180°C under a nitrogen atmosphere of 101Kpa (A), started heating for 30 minutes, confirmed that the raw materials were completely dissolved, and then started stirring , adjust the pressure to 20Kpa (A), and at the same time raise the temperature to 210°C at a speed of 60°C per hour. The temperature was raised to 280°C, and after the temperature reached 280°C, the pressure was gradually reduced to 100 Pa (A) within 1 hour, and the reaction was stirred for 30 minutes under this condition to end the reaction. After the reaction, the four-necked flask was filled with nitrogen to return to normal pressure, and the polycarbonate resin produced was taken out for performance eval...

Embodiment 2

[0081] 34.68g (0.06mol) raw material A1, 6.06g (0.01mol) raw material A2, 13.14g (0.03mol) raw material B1, 22.042g (0.103mol) diphenyl carbonate, 43.62mg (1×10 -4 mol) lanthanum acetylacetonate is put into the 200ml four-necked flask that has stirrer and distillation unit, except that, carry out the operation identical with embodiment 1, the polycarbonate physical property parameter that obtains is as shown in table 1.

Embodiment 3

[0083] 58.4g (0.08mol) raw material A3, 4.38g (0.01mol) raw material B1, 3.74g (0.01mol) raw material C1, 22.47g (0.105mol) diphenyl carbonate, 325.8μg (1×10 -5 mol) cesium carbonate is put into the 200ml four-necked flask that has agitator and distillation unit, except that, carry out operation identical with embodiment 1, the polycarbonate physical property parameter that obtains is as shown in table 1.

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Abstract

The invention discloses optical polycarbonate and a preparation method thereof, the optical polycarbonate comprises a structural unit shown in the following general formula (1), and the structural unit can be prepared by reacting a dihydroxy compound corresponding to the structure of the general formula (1) with carbonic acid diester. The obtained polycarbonate resin is high in refractive index and easy to form, and can be applied to the field of optical polycarbonate such as optical lenses.

Description

technical field [0001] The invention relates to the field of polycarbonate, in particular to an optical polycarbonate for an optical lens and a preparation method thereof. Background technique [0002] Optical glass or optical resin is currently used as the optical lens material in optical systems such as mobile phone camera, security, vehicle imaging, intelligent assisted driving, VR / AR, and device vision. Compared with optical glass, optical resin has the advantages of injection molding, low production cost and large output. Therefore, more and more optical lenses are made of optical resin. [0003] Optical lenses are mainly used in mobile terminals, and consumers’ demands on product performance are changing rapidly. In recent years, light, thin and compact optical lens products have become the mainstream trend, which requires the development of optical resins with higher refractive index. [0004] Patent document CN104769007A discloses a polycarbonate containing 2,2-bis-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G64/08C08G64/30C08G64/16
CPCC08G64/081C08G64/305C08G64/165
Inventor 曾伟隋东武王晓东李强杨井涛王磊黎源赵欣靳少华丁可宋延方杨洋陈永
Owner WANHUA CHEM GRP CO LTD
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