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Polyester resin composition and plastic article

A technology of polyester resin and composition, applied in the field of polyester resin composition and plastic products, capable of solving the problems of insufficient heat resistance, weak surface finish, unsatisfactory performance of physical properties of metal deposition reflectors, etc.

Active Publication Date: 2008-07-02
LOTTE ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, conventionally known or researched materials still have unresolved problems such as insufficient heat resistance and weak surface finish and cannot satisfactorily exhibit the physical properties required for the application of direct-deposited metal-deposited reflectors.

Method used

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  • Polyester resin composition and plastic article
  • Polyester resin composition and plastic article

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Experimental program
Comparison scheme
Effect test

Embodiment 1 to 3 and comparative Embodiment 1 to 6

[0058] The above ingredients were mixed according to the composition listed in Table 1 to prepare a polyester resin composition, which was then melted and mixed in a melt twin-screw extruder (Φ=45 mm) at 240 to 280° C. To prepare flake polyester resin. The sheet thus obtained was dried at 130°C for 5 hours or more, and introduced into a screw injection molding machine at 240 to 280°C to prepare a flat sample (10 cm wide x 10 cm long x 0.3 cm thick).

[0059] Table 1

[0060] Example number

Comparative Example No.

1

2

3

1

2

3

4

5

6

(A) Polybutylene terephthalate

resin

100

100

100

100

100

100

100

100

100

(B) Diol-modified polyparaphenylene

Ethylene glycol diformate resin

20

40

40

-

40

80

40

-

- ...

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Abstract

The invention discloses a polyester resin composition and plastic products prepared from the resin composition. The polyester resin composition comprises about 100 parts by weight of polybutylene terephthalate base resin, about 10 to about 50 parts by weight of glycol-modified polyethylene terephthalate resin, about 0.1 to about 10 parts by weight of inorganic filler, and about 0.01 to about 5 parts by weight of resin stabilizer.

Description

[0001] Cross References to Related Applications [0002] This non-provisional application claims priority under 35 USC Section 119 to Korean Patent Application No. 2006-0138268 filed on December 29, 2006, the entire contents of which are hereby incorporated herein by reference. technical field [0003] The present invention relates to polyester resin compositions and plastic products. Background technique [0004] In conventional methods of making metal-deposited reflectors, such as headlamp bezels, reflectors or luminaires for vehicles, a primer coating is performed prior to metal deposition to improve the surface finish of the metal-deposited reflector. However, since the primer contains organic solvents, this method may have a negative environmental impact. In addition, it may take a long time to form a coating film, which may in turn lead to higher production costs and lower productivity. [0005] For this reason, metal has recently been applied directly to the surface...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08K3/00C08K13/02
CPCC08L67/02C08K3/0033C08K5/005C08K3/013C08L2666/18C08J5/00C08J2300/22C08K5/524C08K2201/003C08L2201/02
Inventor 沈仁植林锺喆
Owner LOTTE ADVANCED MATERIALS CO LTD