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Flame-retardant polyethylene terephthalate resin composition

A technology of polyethylene terephthalate and ethylene terephthalate, which is applied in the fields of flame-retardant polyethylene terephthalate resin compositions and lighting parts, and can solve problems such as decreased mechanical properties

Inactive Publication Date: 2005-01-19
WIN TECH POLYMER LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when the heat discoloration resistance is improved, the mechanical properties will be reduced, and it is impossible to have both mechanical properties and heat discoloration resistance at a high level.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～6 and comparative example 1～2

[0096] After the following ingredients are uniformly dry-blended in advance according to a certain ratio, use a two-screw extruder with a screw diameter of 44mm and a ventilated port to discharge at a cylinder temperature of 240°C to 265°C and a screw speed of 160rpm. Melting and kneading under the condition of an amount of 40kg / h, extruding into threads, cutting after cooling to obtain pellets for molding. Using the obtained pellets, use an injection volume of 145 cm 3 Injection molding machine with a barrel temperature of 270°C, a mold temperature of 120°C, and an injection pressure of 800kg / cm 2 , Cooling time of 15 seconds, and overall molding cycle of 26 seconds, a lamp holder for lighting was formed and used for various evaluations. Components and results used in Examples and Comparative Examples are shown in Table 1 and Table 2.

[0097] Polyethylene terephthalate (1) [TRF, manufactured by Teijin Co., Ltd.]: Polymerization catalyst using antimony

[0098] Polyethylen...

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PUM

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Abstract

A flame-retardant polyethylene terephthalate resin composition which comprises A 100 parts by weight of a polyethylene terephthalate resin, B 5 to 60 parts by weight of a bromine compound flame retardant having a 5 wt.% heating loss temperature of 360 DEG C or higher as measured in a nitrogen stream at a heating rate of 10 DEG C / min, C 0.01 to 20 parts by weight of a crystallization accelerator, D 0.01 to 20 parts by weight of a colorant, and E 0.01 to 5 parts by weight of an antioxidant. The resin composition has high resistance to thermal discoloration. When heated at 210 DEG C for 24 hours, the composition has a color difference DELTAE of 15 or less. The resin composition may contain an antimony compound flame retardant aid and / or an inorganic filler. The resin composition can be effectively inhibited from changing in color and can combine mechanical properties with resistance to thermal discoloration.

Description

technical field [0001] The present invention relates to a flame-retardant polyethylene terephthalate resin composition suitable for lighting parts with good color tone and lighting parts using the same. More specifically, it relates to a flame-retardant polyethylene terephthalate-based resin composition containing a specific brominated flame retardant, having a small degree of discoloration by heating and having a good color tone, and a lighting component using the same. Background technique [0002] Thermoplastic aromatic polyester resins represented by polyethylene terephthalate have excellent mechanical strength, chemical resistance, and electrical insulation, and are widely used in electrical and electronic parts, automotive parts, and other For mechanical parts, etc., in order to improve product safety, it is also required to implement flame retardancy on molding materials. [0003] However, if a flame retardant and a flame retardant auxiliary are blended in order to i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/00C08K5/3417C08L63/02
CPCC08K5/0008C08K5/0066C08L63/00C08K5/005C08K5/3417
Inventor 沼田贵善
Owner WIN TECH POLYMER LTD
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