Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Polyester resin composition and moldings made therefrom

A polyester resin and molded product technology, applied in the parts of lighting devices, lighting and heating equipment, semiconductor devices, etc., can solve the problems of time reflectance decrease, difficulty in obtaining brightness, deterioration of production capacity, etc., and achieve improved anti-yellowing Effects of denaturation, improved light extraction, excellent initial reflectance

Active Publication Date: 2019-03-08
LOTTE ADVANCED MATERIALS CO LTD
View PDF5 Cites 0 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polyester resin composition and moldings made therefrom
  • Polyester resin composition and moldings made therefrom
  • Polyester resin composition and moldings made 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 ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
melting pointaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

Disclosed herein are polyester resin compositions and molded articles made therefrom. The polyester resin composition includes: (A) a polyester resin; (B) a white pigment; and (C) a reflectance maintaining agent including an inorganic compound having a pH of 7.5 to 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com