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Polyester Resin Composition and Molded Article Manufactured Therefrom

A technology of polyester resin and composition, which is applied in the field of polyester resin composition and molded products made from it, can solve the problems of time reflectance decrease, production capacity deterioration, difficulty in obtaining brightness, etc., and achieve improved yellowing resistance, Excellent initial reflectance, effect of improving light extraction ability

Active Publication Date: 2016-06-29
LOTTE ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to obtain sufficient brightness as the reflector suffers from color changes when molded and the reflectance drops significantly over time.
[0008] In addition, although attempts have been made to manufacture reflectors using ceramic materials, there is a disadvantage that, although ceramic materials are excellent in heat resistance and chemical resistance, they are not economical due to deterioration in productivity

Method used

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  • Polyester Resin Composition and Molded Article Manufactured Therefrom
  • Polyester Resin Composition and Molded Article Manufactured Therefrom
  • Polyester Resin Composition and Molded Article Manufactured Therefrom

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0088] Next, some examples for demonstrating the excellent effects of the polyester resin composition according to the present invention will be described in detail.

[0089] Details of components of the polyester resin compositions used in Examples and Comparative Examples are as follows.

[0090] (a) Polyester resin

[0091] Puratan 0502 (SK Chemical Co., Ltd.) corresponding to poly(hexanedimethyl cyclo-1,4-terephthalate) (PCT) was used.

[0092] (b) white pigment

[0093] CR-470 (Tronox Co., Ltd.) corresponding to titanium dioxide was used.

[0094] (c) Reflectance maintaining agent

[0095] (c-1) A metal inorganic compound (calcium silicate) having a pH of 9.7 was used.

[0096](c-2) A metal inorganic compound (calcium silicate) having a pH of 10.3 was used.

[0097] (c-3) A non-metallic inorganic compound (glass fiber) having a pH of 4.3 was used.

[0098] (c-4) A non-metallic inorganic compound (glass fiber) having a pH of 5.3 was used.

[0099] The components as ...

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Abstract

Disclosed herein are a polyester resin composition and a molded article manufactured therefrom. The polyester resin composition includes: (A) a polyester resin; (B) a white pigment; and (C) a reflectance retention agent comprising an inorganic compound having a pH of about 7.5 to about 14.

Description

[0001] Citations to related applications [0002] This application claims the benefit and priority of Korean Patent Application No. 10-2014-0182421 filed with the Korean Intellectual Property Office on December 17, 2014, the entire disclosure of which is hereby incorporated by reference. technical field [0003] The present invention relates to polyester resin compositions and molded articles produced therefrom. More specifically, the present invention relates to a polyester resin composition having excellent reflectance and yellowing resistance while maintaining mechanical properties, and a molded article produced therefrom. Background technique [0004] Due to the excellent properties of polyester resins in heat resistance, mechanical strength, transparency, chemical resistance, etc., polyester resins are used in various applications such as films, fibers, mechanical or electronic parts. [0005] In particular, polyester resins are used as materials for reflectors, scramb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08K3/22C08K3/34C08K7/14C08K3/26C08K3/30
CPCC08K3/22C08K3/34C08K7/14C08K2003/2241C08K2201/003C08K2201/014C08K2201/016C08L2205/24C08L67/02H01L33/60C08G63/18C08K3/10C08L67/00C09C1/00F21V7/22
Inventor 金阳日姜兑坤朴赞武白异杰洪尚铉
Owner LOTTE ADVANCED MATERIALS CO LTD
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