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Optical polycarbonate, preparation method and application thereof

A technology of polycarbonate resin and carbon number, which is applied in the field of optical polycarbonate for optical lenses and its preparation, can solve the problems that the high limit can only reach 1.668, and it is difficult to meet market demand.

Pending Publication Date: 2021-01-22
WANHUA CHEM GRP CO LTD
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Patent CN201810165983.2 discloses a polycarbonate resin that can be used for optical moldings and its manufacturing method, mainly using 2,2-bis-(2-hydroxyethoxy)-1,1-binaphthyl as a comonomer , the highest refractive index of the polycarbonate obtained in its embodiment can only reach 1.668, and the requirements for the optical polycarbonate refractive index of lens products on the market have been increased to more than 1.7, and this refractive index product is difficult to meet the market demand

Method used

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  • Optical polycarbonate, preparation method and application thereof
  • Optical polycarbonate, preparation method and application thereof
  • Optical polycarbonate, preparation method and application thereof

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Embodiment 1

[0067] 32g (0.05mol) raw material SDPEF, 34.8g (0.05mol) raw material SDPBF, 22.684g (0.106mol) diphenyl carbonate, 48.87μg (1.5×10 -6 mol) cesium carbonate into a 200ml four-necked flask equipped with a stirrer and a distillation device, replaced with nitrogen 5 times, heated to 220°C under a nitrogen atmosphere of 101Kpa (A), and started heating for 40 minutes to confirm 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 270°C at a rate of 30°C / hr. The temperature was raised to 320°C, and after the temperature reached 320°C, the pressure was gradually reduced to 50 Pa (A) within 1 hour, and the reaction was stirred for 40 minutes under this condition, and the reaction was terminated. 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 evaluation. The measured ...

Embodiment 2

[0069] 69.6g (0.1mol) raw material SDPBF, 21.828g (0.102mol) diphenyl carbonate, 4.362mg (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

[0071] 64g (0.1mol) raw material SDPEF, 22.042g (0.103mol) diphenyl carbonate, 3.258mg (1×10 -4mol) 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 an optical polycarbonate resin for an optical lens, a preparation method and application thereof, wherein the polycarbonate resin comprises a structural unit as shown in a general formula (1), and has higher refractive index, better hardness and proper processing temperature. The optical lens prepared from the polycarbonate resin has the advantages of high refractive index,low Abbe number and high stability, so the optical lens can be used in the high-end fields of telescopes, binocular telescopes, unmanned lenses, VR / AR lenses and the like.

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 and application thereof. Background technique [0002] The camera has the functions of static image capture and video recording. It is an important imaging device. It is mainly composed of lens, motor, filter, image sensor, image signal processor and other components. The key factor of lens image quality. At present, there are mainly two kinds of lens materials: optical glass and optical resin, each of which has its own advantages and disadvantages. Optical glass material has good stability, but it is difficult to manufacture and heavy in weight; optical resin needs to be further improved in extreme environmental tolerance, but it is easy to form. The production efficiency is high, and more and more lenses are made of optical resin materials. [0003] The downstream of the lens is mainly used in consumer products...

Claims

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Application Information

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IPC IPC(8): C08G64/08C08G64/30G02B1/04
CPCC08G64/081C08G64/305C08G64/307G02B1/041
Inventor 曾伟隋东武李强王晓东王磊黎源赵欣靳少华黎雷
Owner WANHUA CHEM GRP CO LTD
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