Title:
INSERT MOLDED ITEM
Document Type and Number:
Japanese Patent JP3667471
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide improved mechanical strength and heat shock resistance by insert molding a resin comprising polybutylene terephthalate and containing a specific quantity of specific polytetramethylene glycol as a copolymer component, and a metal or inorganic solid.
SOLUTION: Polybutylene terephthalate(PBT) having intrinsic viscosity of 1.15dl/g is prepared by copolymerizing 10wt.% of polytetramethylene glycol having weight-average molecular weight of 1000, and 49wt.% of the polybutylene terephthalate, 21wt.% of PBT homopolymer having intrinsic viscosity of 0.85dl/g, and 30wt.% of glass fiber are mixed together to prepare a mixture, which mixture is melted, kneaded, and extruded at 260°C by means of a 35mm twin- screw extruder to provide pellets. The pellets are insert molded using a prism- shaped steel.
Inventors:
Yoshitaka Kanazawa
Shigeru Muramatsu
Kunihiro Takenaka
Shigeru Muramatsu
Kunihiro Takenaka
Application Number:
JP29530796A
Publication Date:
July 06, 2005
Filing Date:
November 07, 1996
Export Citation:
Assignee:
Mitsubishi Engineering Plastics Co., Ltd.
International Classes:
B29C45/14; B29C45/00; C08L67/02; B29K67/00; (IPC1-7): B29C45/14; B29C45/00
Domestic Patent References:
| JP2294357A | ||||
| JP8165409A |
Attorney, Agent or Firm:
Shigemitsu Sasaki
Hasegawa Soji
Hasegawa Soji
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