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Poly(ester)carbonate and method for producing poly(ester)carbonate

A technology of polyester carbonate and manufacturing method, applied in the field of polycarbonate and polycarbonate manufacturing, capable of solving problems such as poor processability

Active Publication Date: 2022-07-22
TEIJIN LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Glass, which has been used as a material for optical systems, can achieve various required optical characteristics and has excellent environmental resistance, but has the problem of poor processability

Method used

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  • Poly(ester)carbonate and method for producing poly(ester)carbonate

Examples

Experimental program
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Effect test

Embodiment 1

[0245] As the diol, 44.93 parts by mass of 2,2'-bis(2-hydroxyethoxy)-1,1'-binaphthyl (hereinafter abbreviated as BHEB) and 9,9-bis[4-(2-hydroxyl) were used. 43.85 parts by mass of ethoxy)phenyl]fluorene (hereinafter abbreviated as BPEF in some cases),

[0246] As an ester-forming derivative, 72.43 parts by mass of 2,2'-bis(carboxymethoxy)-1,1'-binaphthyl (hereinafter abbreviated as BCMB) was used,

[0247] As carbonate, 9.43 parts by mass of diphenyl carbonate (hereinafter sometimes abbreviated as DPC) was used,

[0248] After putting into a reactor equipped with a stirrer and a distillation apparatus, and performing nitrogen replacement three times, the jacket was heated to 200° C. to melt the raw materials. After complete dissolution, the pressure was reduced to 40 kPa over 20 minutes. Then, the temperature of the jacket was raised to 240°C at a rate of 60°C / hr. Thereafter, the pressure was reduced to 26 kPa over 20 minutes with the jacket kept at 240°C. Thereby, the est...

Embodiment 2

[0253] P compound 1 was changed to diethyl p-methylbenzylphosphonate (hereinafter sometimes abbreviated as P compound 2), and the ratio was 58.1×10 -3 Particles of polyester carbonate were obtained by the same method as in Example 1, except for the parts by mass. The physical properties of the obtained resin are shown in Table 1.

Embodiment 3

[0255] P compound 1 was changed to diethyl benzyl phosphonate (hereinafter sometimes abbreviated as P compound 3), and made 54.8×10 -3 Particles of polyester carbonate were obtained by the same method as in Example 1, except for the parts by mass. The physical properties of the obtained resin are shown in Table 1.

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Abstract

An object of the present invention is to provide a method for producing a novel poly(ester)carbonate. The present invention relates to a method for producing poly(ester) carbonate, which comprises the step of transesterifying diol and carbonate in the presence of a catalyst, wherein the catalyst is composed of aluminum or an aluminum compound and a phosphorus compound.

Description

technical field [0001] The present invention relates to a poly(ester)carbonate and a method for producing the poly(ester)carbonate. Background technique [0002] The camera module is used in a camera, a video camera, or a cellular phone with a camera, a video phone, or a door phone with a camera, or the like. In recent years, the optical system used in the camera module has been particularly required to be miniaturized. When the optical system is miniaturized, the chromatic aberration of the optical system becomes a big problem. Therefore, it has been known that chromatic aberration can be achieved by combining an optical lens material with a high refractive index and a small Abbe number and a high dispersion of the optical lens, and an optical lens material with a low refractive index and a large Abbe number and with a low dispersion. Correction. [0003] Glass conventionally used as a material of an optical system can achieve various required optical properties and is e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/84C08G63/64C08G63/87C08G64/06C08G64/30G02B1/04
CPCC08G63/64C08G63/84C08G63/87C08G64/06C08G64/30G02B1/04C08G64/305G02B1/041C08L69/005C08G64/307
Inventor 布目和德松井学柳田高恒小笠原一良佐藤敬介山田恭辅大山达也
Owner TEIJIN LTD