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Polyester resin and polyester resin composition for surface mount type led reflector using polyester resin

A technology of polyester resin and composition, applied in the field of polyester resin, can solve the problem of no report, etc., and achieve the effects of good fit, high heat resistance and low water absorption

Active Publication Date: 2017-06-16
TOYOBO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] As described above, there has been no report of a polyester resin composition that sufficiently satisfies the characteristics of a reflector for surface-mounted LEDs.

Method used

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  • Polyester resin and polyester resin composition for surface mount type led reflector using polyester resin
  • Polyester resin and polyester resin composition for surface mount type led reflector using polyester resin
  • Polyester resin and polyester resin composition for surface mount type led reflector using polyester resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0114] In a 20-liter stainless steel autoclave equipped with a stirrer, put 3880g of high-purity dimethyl terephthalic acid, 2782g of 4,4'-biphenyldimethanol, 1922g of ethylene glycol, 2g of manganese acetate, and 0.86g of germanium dioxide , after the transesterification, the temperature was raised to 300° C. in 60 minutes, and the pressure of the reaction system was slowly lowered to 13.3 Pa (0.1 Torr), and then the polycondensation reaction was carried out at 310° C. and 13.3 Pa. After the pressure was released, the slightly pressurized resin was discharged in water into a thread shape, and after cooling, it was cut with a cutter to obtain cylindrical pellets with a length of about 3 mm and a diameter of about 2 mm. The intrinsic viscosity of gained polyester resin is 0.60dl / g, according to 1 According to H-NMR measurement, in the resin composition, terephthalic acid was 100 mol%, 4,4'-biphenyl dimethanol was 65 mol%, ethylene glycol was 34.5 mol%, and diethylene glycol was...

Embodiment 2～4

[0116] Each polyester resin was obtained in the same manner as the polymerization of the polyester resin in Example 1, except that the amount and type of raw materials used were changed. Table 1 shows the compositions and characteristic values ​​of the obtained polyester resins. In addition, diethylene glycol is secondary to the condensation of ethylene glycol.

Embodiment 5

[0118] In a 20-liter stainless steel autoclave equipped with a stirrer, put 3880g of high-purity dimethyl terephthalic acid, 2782g of 4,4'-biphenyldimethanol, 1922g of ethylene glycol, 2g of manganese acetate, and 0.86g of germanium dioxide After transesterification, add 8g of high-purity terephthalic acid, raise the temperature to 300°C in 60 minutes, slowly lower the pressure of the reaction system to 13.3Pa (0.1Torr), and carry out polycondensation reaction at 310°C and 13.3Pa . After the pressure was released, the slightly pressurized resin was discharged into a thread shape in water, and after cooling, it was cut with a cutter to obtain cylindrical pellets with a length of about 3 mm and a diameter of about 2 mm. The intrinsic viscosity of gained polyester resin is 0.60dl / g, according to 1 According to H-NMR measurement, in the resin composition, terephthalic acid was 100 mol%, 4,4'-biphenyl dimethanol was 65 mol%, ethylene glycol was 34.5 mol%, and diethylene glycol was...

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Abstract

Disclosed is a polyester resin which comprises a dicarboxylic acid component containing 50 mol% or more of an aromatic dicarboxylic acid and a glycol component containing 15 mol% or more of 4,4'-biphenyldimethanol, and which has a melting point of 280ºC or higher. Also disclosed is a polyester resin composition comprising the polyester resin (A), titanium oxide (B), at least one reinforcing material (C) selected from the group consisting of a fibrous reinforcing material and a needle-like reinforcing material, and a non-fibrous or non-needle-like filler (D), wherein titanium oxide (B), the reinforcing material (C) and the non-fibrous or non-needle-like filler (D) are contained in amounts of 0.5 to 100 parts by mass, 0 to 100 parts by mass and 0 to 50 parts by mass, respectively, relative to 100 parts by mass of the polyester resin (A). The polyester resin composition can be used suitably for a reflective plate for a surface-mount-type LED.

Description

technical field [0001] The present invention relates to a kind of product which has better formability, fluidity, dimensional stability, low water absorption, solder heat resistance, surface reflectivity, etc., and its gold / tin solder heat resistance, light resistance, low water absorption are also better. The best polyester resin, and a polyester resin composition using the polyester resin that is very suitable for use on a reflector for surface-mounted LEDs. Background technique [0002] In recent years, LEDs (Light Emitting Diodes) have been applied to lighting fixtures, optical components, mobile phones, backlights for liquid crystal displays, car control panels, signal machines, and display panels by making full use of their characteristics such as low power consumption, long life, high brightness, and miniaturization. Wait. In addition, in applications where designability and portability are important, surface mount technology is used in order to realize thinness, lig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/193C08K3/22C08K7/00C08L67/02H01L33/60
CPCC08G63/193C08K3/013C08K3/22C08K3/346C08K7/02H01L33/60C08L67/02
Inventor 户川惠一朗
Owner TOYOBO CO LTD