Polycarbonate and preparation method and application thereof

A polycarbonate, an independent technology, applied in the field of polycarbonate and its preparation, can solve the problems of complex lens composition, large chromatic aberration, etc., and achieve the effect of multi-selectivity, high glass transition temperature, and high refractive index

Pending Publication Date: 2021-01-05
WANHUA CHEM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Studies have shown that the higher the refractive index of the optical lens, the lighter and thinner the lens. Therefore, the existing technology has been devoted to the research of polycarbonate with high refractive index; and the higher the refractive index of the lens, the lower the Abbe

Method used

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  • Polycarbonate and preparation method and application thereof
  • Polycarbonate and preparation method and application thereof
  • Polycarbonate and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0159]Preparation Example 1

[0160]2,2-bis(2-hydroxyethoxy)-6,6-diphenyl-1,1-dithionaphthalene (BINSL-2EO)

[0161]The synthetic route is as follows:

[0162]

[0163](1) In a four-necked flask equipped with a magnetic stirrer, thermometer, constant pressure dropping funnel and condensing reflux tube, add 223g (1mol) of 6-bromo-2-naphthol (Wuhan Rongcan Biopharmaceutical), toluene and 500mL of ethyl acetate mixed solution (the mass ratio of toluene to ethyl acetate is 3:2), stir to dissolve, under ice bath conditions, slowly add 53g (0.52mol) sulfur dichloride dropwise, and control the temperature of the reaction system at Around 15°C. After dripping, continue to react for 3h. Warm up to 100℃, after distilling out most of the solvent, put it in the refrigerator and freeze for 1h, there is solid precipitation, filter, recrystallize from absolute ethanol, filter and dry to obtain 6,6-dibromo-1,1-dithionaphthalene phenol.

[0164](2) Dissolve 1 mol of 6,6-dibromo-1,1-dithionaphthalene and 2 mol of p...

Example Embodiment

[0167]Preparation Example 2

[0168]2,2-bis(2-hydroxyethoxy)-6,6-bis(naphthalene-1-yl)-1,1-dithionaphthalene (1DNBINSL-2EO)

[0169]The synthetic route is as follows:

[0170]

[0171]The specific preparation method differs from Preparation Example 1 only in that the phenylboronic acid in step (2) is replaced with an equimolar amount of 1-naphthylboronic acid (Puyang Huicheng Technology); other reaction steps are the same as those in Preparation Example 1. The target product 1DNBINSL-2EO was obtained.

[0172]The NMR results of the target product are as follows:1H-NMR(400MHz, CDCl3)δ / ×10-6: 8.55 (t, 2H), 8.42 (t, 2H), 8.08-8.04 (m, 6H), 7.95 (t, 2H), 7.86 (d, 2H), 7.61-7.55 (m, 8H), 6.85 (d , 2H), 4.43 (t, 4H), 3.69 (m, 4H), 3.65 (m, 2H).

Example Embodiment

[0173]Preparation Example 3

[0174]2,2-bis(2-hydroxyethoxy)-1,1-dithionaphthalene (BNSE)

[0175]The synthetic route is as follows:

[0176]

[0177](1) In a four-necked flask equipped with a magnetic stirrer, a thermometer, a constant pressure dropping funnel and a condensing reflux tube, 144g (1mol) of 2-naphthol (Jiangsu Chiral Chemical Industry) and a mixture of toluene and ethyl acetate were sequentially added 500 mL of the mixed solution (the mass ratio of toluene and ethyl acetate is 3:2), stir to dissolve, and slowly add 53 g (0.52 mol) sulfur dichloride dropwise under ice bath conditions, and control the temperature of the reaction system at about 15°C. After dripping, continue to react for 3h. The temperature was raised to 100°C, and most of the solvent was distilled out, and then placed in the refrigerator for 1 hour. A solid precipitated out, filtered, recrystallized with anhydrous ethanol, filtered and dried to obtain dithionaphthol.

[0178](2) In the reactor, the molar ratio of the...

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Abstract

The invention provides polycarbonate and a preparation method and application thereof, the polycarbonate comprises a repeating unit with a structure as shown in a formula I, and the repeating unit comprises a specific dithionaphthalene group, so that the polycarbonate has high refractive index, high Abbe number and excellent hydrothermal stability, and the performance requirements of polycarbonateserving as optical resin in optical parts can be fully met. The refractive index of the polycarbonate reaches up to 1.66-1.75, the Abbe number is 20-40, and the polycarbonate has high transparency, high refractive index, high Abbe number and excellent hydrothermal stability, and can fully meet the application requirements of polycarbonate materials in high-performance optical components. The optical lens comprising the polycarbonate has the characteristics of lightness, thinness, low chromatic aberration and low chromatic dispersion, and provides more selectivity for the combination of optical systems.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a polycarbonate and its preparation method and application. Background technique [0002] Nowadays, the lenses in optical lenses are developing in the direction of thinning and thinning. Commonly used lens materials include optical glass and optical resin; among them, optical glass has high cost, poor molding and processing performance, and poor water and heat resistance stability, which limits its use. Large-scale applications in optical lenses and lenses. In contrast, optical resin has the advantages of lower cost, easy processing and molding, and thinner and lighter, and has a broader application prospect. [0003] With the development of thinner and lighter electronic digital products, new requirements are put forward for the performance of optical resins, including refractive index, Abbe number and stability. Polycarbonate is an engineering plastic wi...

Claims

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Application Information

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IPC IPC(8): C08G64/30G02B1/04
CPCC08G64/307G02B1/041G02B1/04Y02E10/549
Inventor 赵欣黎雷靳少华曾伟王磊
Owner WANHUA CHEM GRP
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