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Polycarbonate resin composition and molded product formed of the same

一种聚碳酸酯树脂、树脂组合物的技术，应用在聚碳酸酯树脂组合物领域，能够解决不能确保聚碳酸酯树脂组合物可见光透过率、聚碳酸酯树脂组合物初期黄度指数、热稳定性及耐气候性的改善限制等问题

Active Publication Date: 2012-07-11
LOTTE ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method is the easiest way, the inherent properties of the UV stabilizer added to the polycarbonate resin composition make the initial yellowness index, thermal stability and weather resistance of the polycarbonate resin composition Improvement is limited
In particular, when conventional UV stabilizers are used alone or as a mixture, the visible light transmittance of the polycarbonate resin composition cannot be ensured

Method used

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  • Polycarbonate resin composition and molded product formed of the same
  • Polycarbonate resin composition and molded product formed of the same
  • Polycarbonate resin composition and molded product formed of the same

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0091] Preparation Example 1: Preparation of polycarbonate resin

[0092] 3.0kg of 2,2-bis(4-hydroxyphenyl)propane (bisphenol A), 3.1kg of diphenyl carbonate, and 100ppb (one billionth) of KOH (based on 1mol of bisphenol A) Add to the reactor in order, and use nitrogen to remove the oxygen in the reactor. The reactor was heated to 160°C and then up to 190°C for 6 hours. After 6 hours, the reactor was heated to 220°C and placed at 70 Torr (pressure) for 1 hour. The reactor was heated to 260°C and held at 20 Torr (pressure) for 1 hour, then the reactor was depressurized to 0.05 Torr and held for 1 hour. Thus, a polycarbonate resin having a weight average molecular weight of 23000 g / mol was obtained.

preparation example 2

[0093] Preparation Example 2: Preparation of polycarbonate resin

[0094]3.0 kg of 2,2-bis(4-hydroxyphenyl)propane (bisphenol A) was dissolved in a 5% to 10% NaOH solution, and then, 10 L of dichloromethane was added thereto. 1.3 kg of phosgene was added to the solution and reacted at 20° C. for 6 hours under atmospheric pressure. After the reaction was terminated, the resin in the emulsion state was neutralized with hydrochloric acid and washed with water, followed by centrifugation to separate water and methylene chloride, thereby preparing a polycarbonate resin with a weight average molecular weight of 23000 g / mol.

Embodiment 1

[0095] Embodiment 1: the preparation of polycarbonate resin composition

[0096] According to the composition listed in Table 1, the following materials were mixed: the polycarbonate resin prepared in Preparation Example 1, 2-(2H-benzotriazolyl)-4-(1 , 1,3,3-tetramethylbutyl)phenol, 2,2'-methylenebis[6-(2H-benzotriazol-2-yl)-4-( 1,1,3,3-Tetramethylbutyl)phenol], 2,2'-(1,4-xylylene)bismalonate tetraethyl as the third UV stabilizer, and as Tris(2,4-di-tert-butylphenyl) phosphate containing phosphorus heat stabilizer to prepare resin composition.

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Abstract

Disclosed are a polycarbonate resin composition and a molded product formed of the same. The polycarbonate resin composition includes a polycarbonate resin and three types of UV stabilizers including a first benzotriazole UV stabilizer, a second benzotriazole UV stabilizer, and a bismalonate UV stabilizer to improve heat stability, weather resistance, and visible light transmittance. The invention also discloses a molded product formed of the same.

Description

technical field [0001] The present invention involves a polycarbonate resin composition and a modular product formed by it. More specifically, the present invention involves one polycarbonate resin composition containing polycarbonate resin and three types of ultraviolet (UV) stabilizers and a modular product formed by the polycarbonate resin composition. Three Type types of UV stabilizers are: first benzene -measome UV stabilizer, second benzazole UV stabilizer, and bisopyrium dystelite UV stabilizers to improve thermal stability and weather resistance, especially in particular Improve visible light transmission rate, weather resistance (weather resistance), and thermal stability. Background technique [0002] Polycarbonate is a typical plastic material with a heat distortion temperature above 135°C, and is prepared by melt polycondensation or interfacial polycondensation. Because polycarbonate is transparent and has good mechanical properties, it is widely used in exteri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08K5/3475C08K5/523C08K5/521C08K5/526C08K5/524C08K5/42C08K5/12
CPCC08K5/005C08L69/00
Inventor 池俊镐许宗赞权五成张福男
Owner LOTTE ADVANCED MATERIALS CO LTD