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Polyester resin composition with improved mechanical properties and fade resistance

A technology of polyester resin and composition, applied in the field of polyester resin composition, can solve the problems of reduced impact strength and moldability, reduced light stability, etc., and achieve the effect of excellent mechanical properties and excellent optical properties

Active Publication Date: 2017-12-12
LOTTE ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it also has problems such as significantly reduced impact strength and moldability depending on the content of white pigments and fillers, and reduced light stability at high temperatures during long-term operation

Method used

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  • Polyester resin composition with improved mechanical properties and fade resistance
  • Polyester resin composition with improved mechanical properties and fade resistance
  • Polyester resin composition with improved mechanical properties and fade resistance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0132] As shown in Table 1, the (A) first polyester resin of 40wt%, the (B) second polyester resin of 10wt%, the (C) white pigment of 35wt% and the (D) inorganic filler of 15wt% were mixed, And dry blended to prepare a polyester resin composition. It was processed into pellets using a twin-screw extruder with Φ = 36 mm and a nozzle temperature of 250°C to 310°C. The prepared pellets were dried at 80°C for 4 hours, and the obtained samples were injection molded and evaluated for their physical properties, the results of which are shown in Table 2.

Embodiment 2 to 3

[0134] As shown in Table 1, the polyester resin composition was prepared in the same manner as in Example 1, except that (A) the first polyester resin, (B) the second polyester resin, (C ) white pigment and (D) content of inorganic filler. The measured physical properties are shown in Table 2.

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Abstract

The present invention provides polyester resin compositions having improved mechanical properties and fading resistance. The present invention relates to a polyester resin composition comprising (A) a first polyester resin having a melting temperature greater than 285°C; (B) a melting temperature less than or equal to 285°C, and molded articles produced using the same The second polyester resin; (C) white pigment; and (D) inorganic filler. Accordingly, the present invention can provide a polyester resin composition having improved mechanical properties and discoloration resistance suitable for use as an LED reflector, and a molded article produced using the same.

Description

[0001] References to related applications [0002] This application claims the benefits of Korean Patent Application No. 10-2014-0024022 filed with the Korean Intellectual Property Office on February 28, 2014 and Korean Patent Application No. 10-2015-0022497 filed with the Korean Intellectual Property Office on February 13, 2015 Priorities and Interests, the entire contents of which are incorporated herein by reference. technical field [0003] The present invention relates to a polyester resin composition and molded articles produced using the polyester resin composition. Background technique [0004] Illuminated display devices using new light sources, such as light emitting diodes (LEDs) and organic light emitting diodes (OLEDs), have rapidly replaced existing light sources and are at the forefront. The illuminated display device forms an illuminated display device package together with components such as reflectors, reflective cups, stirrers, housings, and the like. Ac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08K7/14C08K3/22
CPCC08L67/02H01L2224/48091C08K3/013H01L33/60C08L2201/02C08L2201/08C08L2203/20C08L2205/16C08L2207/04H10K50/856H01L2924/00012C08G63/02C08G63/06C08G63/127
Inventor 郑有珍姜兑坤朴赞武林钟喆洪尚铉
Owner LOTTE ADVANCED MATERIALS CO LTD
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