Thermoplastic polyester resin composition and molded article

A technology of thermoplastic polyester and resin composition, which is applied in the field of thermoplastic polyester resin composition, can solve the problems of insufficient heat aging resistance and mechanical physical properties, and increase the amount of gas, and achieve excellent heat aging resistance and dimensional stability , Low gas performance and excellent exudation effect

Active Publication Date: 2018-06-08
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there are problems of insufficient heat aging resistance and mechanical properties, and an increase in the amount of gas generated during molding

Method used

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  • Thermoplastic polyester resin composition and molded article
  • Thermoplastic polyester resin composition and molded article
  • Thermoplastic polyester resin composition and molded article

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～21、 comparative example 1～4

[0174] Using a twin-screw extruder (Nippon Steel Works, TEX-30α) with a screw diameter of 30 mm, a ratio of 20% of the kneading area, and L / D35 rotating in the same direction, (A-1) was polymerized. Butylene phthalate resin, (B) a polyol compound having 5 or more hydroxyl groups or (B') a polyol compound other than the above (B), and (C) a polyfunctional epoxy compound are listed in Table 1- The compositions shown in 3 and 5 were mixed and added from the main feed section of the twin-screw extruder. Furthermore, melt-mixing was performed on the extrusion conditions of 250 degreeC of kneading temperature and 150 rpm of screw rotation speed, and the obtained resin composition was discharged in the form of a strand. After passing the discharged resin composition through a cooling bath, it was granulated with a wire cutter.

[0175] In Examples 1 to 14, the obtained pellets were dried in a hot air dryer at a temperature of 110° C. for 12 hours, and then evaluated by the metho...

Embodiment 22

[0177] (A-2) Polyparaphenylene Ethylene glycol diformate resin, (B) polyols having 5 or more hydroxyl groups, and (C) polyfunctional epoxy compounds are mixed according to the composition shown in Table 4, and added from the main feed section of the twin-screw extruder . Furthermore, melt-mixing was performed on the extrusion conditions of 280 degreeC of kneading temperature and 150 rpm of screw rotation speed, and the obtained resin composition was discharged in the form of a strand. After passing the discharged resin composition through a cooling bath, it was granulated with a wire cutter.

[0178] The obtained pellets were dried in a hot air dryer at a temperature of 150° C. for 3 hours, and then evaluated by the methods described in the above items 1. to 6.

Embodiment 23、24、25、 comparative example 5～7

[0180] Using a twin-screw extruder (Nippon Steel Works, TEX-30α) with a screw diameter of 30 mm, a ratio of 20% of the kneading area, and L / D35 rotating in the same direction, (A-1) was polymerized. Butylene phthalate resin, (B) a polyhydroxy compound having 5 or more hydroxyl groups or (B') the above-mentioned polyhydroxy compound except (B), and (C) a polyfunctional epoxy compound according to Table 4 and The containing composition shown in Table 5 was mixed, and it added from the main feed part of a twin-screw extruder. (D) The inorganic filler was added from between the main feed part and the vent part using a side feeder according to the composition shown in Table 4 and Table 5. Melt mixing was carried out under the extrusion conditions of a kneading temperature of 250° C. and a screw rotation speed of 150 rpm, and the obtained resin composition was discharged in a strand form. After passing the discharged mixture through a cooling bath, granulation was performed using...

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Abstract

A thermoplastic polyester resin composition obtained by combining specific amounts of (B) a polyhydric hydroxyl compound that has five or more hydroxyl groups and (C) an epoxy compound with (A) a thermoplastic polyester resin.

Description

technical field [0001] The present invention relates to a thermoplastic polyester resin composition and a molded article obtained by molding the thermoplastic polyester resin composition. Background technique [0002] Thermoplastic polyester resins are used in a wide range of fields such as mechanical mechanism parts, electrical and electronic parts, and automotive parts due to their excellent injection moldability and mechanical properties. However, thermoplastic polyester resins are prone to decrease in mechanical strength due to thermal aging at high temperatures, so in order to use them as industrial materials such as mechanical mechanism parts, electrical and electronic parts, and automobile parts, in addition to requiring general In addition to the balance of chemical properties and general physical properties, heat aging resistance at long-term high temperature is also required. In addition, in recent years, along with downsizing of molded products, demands for thinn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/00C08K3/013C08K5/053C08K5/1545C08L63/00
CPCC08K3/013C08L67/02C08K5/1545C08L63/00C08L5/16C08K5/053C08K7/14C08L63/04C08K5/1515C08K3/00C08L67/00C08L2201/02C08L2205/025C08L2205/03
Inventor 东城裕介横江牧人梅津秀之
Owner TORAY IND INC
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