Aromatic polycarbonate resin composition and molded resin

A polycarbonate resin, resin molding technology, applied in the direction of products, educts, plastic recycling, etc., can solve the problems of high titanium content, reduced heat resistance of resin compositions, insufficient polycondensation catalysts, etc., and achieves excellent balance of physical properties. Effect

Active Publication Date: 2009-01-14
MITSUBISHI ENG PLASTICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, polymer alloys containing a large amount of aromatic polycarbonate resin have the following problems: when melt-kneading with an extruder or when staying in an injection molding machine, the transesterification reaction proceeds excessively due to excessive heating, and the resin combination reduced heat resistance
However, it is not sufficient to use only the phosphorus component and the titanium component as the polycondensation catalyst. Specifically, the polybutylene terephthalate resin listed as the composition has a large titanium content. However, the resin composition cannot fully satisfy the balance of impact resistance, fluidity, rigidity, chemical resistance, fatigue characteristics, heat resistance, retention heat stability, and reuse characteristics.

Method used

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  • Aromatic polycarbonate resin composition and molded resin
  • Aromatic polycarbonate resin composition and molded resin
  • Aromatic polycarbonate resin composition and molded resin

Examples

Experimental program
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Embodiment

[0237] Examples are shown below to describe the present invention more specifically, but the present invention is not limited to the following examples unless the gist is exceeded. In addition, in the following examples and comparative examples, the added amount refers to parts by weight.

[0238] When preparing each resin composition of an Example and a comparative example, the raw material shown below was prepared.

[0239]

[0240] PC-1: bisphenol A type aromatic polycarbonate produced by interfacial polymerization ("iupilon (ユピロン) S-3000FN" manufactured by Mitsubishi Engineering-Plastics Co., Ltd., Mv22500, terminal hydroxyl group concentration: 150ppm)

[0241] PC-2: Bisphenol A type aromatic polycarbonate produced by interfacial polymerization ("iupilon E-2000FN" manufactured by Mitsubishi Engineering-Plastics Corporation, Mv28000, terminal hydroxyl group concentration: 150ppm)

[0242] PC-3: bisphenol A type aromatic polycarbonate produced by the interfacial polymeri...

manufacture example 1

[0244] Production example 1 (production of PBT-1):

[0245] pass figure 1 In the esterification step shown and the polycondensation step shown in FIG. 3 , polybutylene terephthalate resin is produced in the following manner. First, a 60°C slurry mixed with 1.80 mol of 1,4-butanediol with respect to 1.00 mol of terephthalic acid was continuously fed at 40.0 kg / h from the slurry preparation tank through the raw material supply line (1). It was supplied to the reaction tank (A) for esterification which had the propeller type agitator filled with the polybutylene terephthalate oligomer of 99% of esterification rate beforehand.

[0246] At the same time, the bottom component of the rectification column (C) at 185° C. is supplied from the recirculation line (2) at 18.4 kg / h, and tetrabutylene at 65° C. is supplied as a catalyst at 127 g / h from the catalyst supply line (3). 6.0% by weight titanate solution in 1,4-butanediol (40 ppm relative to theoretical polymer yield). The water...

manufacture example 2

[0265] Production example 2 (production of PBT-2):

[0266] The esterification process in the reactor (A) is carried out in the same manner as PBT-1, and the polycondensation process uses figure 2 The procedure shown is carried out. The reaction conditions in the first polycondensation reaction tank (a) were the same as those of PBT-1, the internal temperature of the second polycondensation reaction tank (d) was 241° C., the pressure was 150 Pa, and the residence time was 70 minutes to obtain pellets. 50kg of the PBT pellets were solid-phase polymerized at 195°C under reduced pressure (below 0.133kPa) in a double-cone mixer (inner capacity 100L), and were taken out after a certain period of time to check the intrinsic viscosity. When the intrinsic viscosity is reached, the polymerization is stopped by cooling. The analytical values ​​of the obtained PBT are summarized in Table 1. Hereinafter, the polybutylene terephthalate resin obtained in Production Example 2 is referred...

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Abstract

An aromatic polycarbonate resin composition which comprises an aromatic polycarbonate resin (ingredient (A)) and a polybutylene terephthalate resin (ingredient (B)) and optionally further contains a rubbery polymer and / or an inorganic filler, characterized in that the amounts of the aromatic polycarbonate resin (ingredient (A)) and the polybutylene terephthalate resin (ingredient (B)) are 51-99 parts by weight and 1-49 parts by weight, respectively, per 100 parts by weight of the sum of the aromatic polycarbonate resin (ingredient (A)) and the polybutylene terephthalate resin (ingredient (B)) and that the polybutylene terephthalate resin (ingredient (B)) has a titanium compound content of 1-75 ppm, excluding 1 ppm, in terms of titanium atom amount and a terminal carboxy group content of 39 [mu]eq / g or lower. This aromatic polycarbonate resin composition has an excellent balance among various properties, i.e., is satisfactory in all of flowability, rigidity, impact resistance, chemical resistance, fatigue characteristics, heat resistance, thermal stability in residence, and suitability for recycling.

Description

technical field [0001] The present invention relates to an aromatic polycarbonate resin composition mainly comprising an aromatic polycarbonate resin and a polybutylene terephthalate resin, and in more detail, relates to fluidity, rigidity, impact resistance, and chemical resistance An aromatic polycarbonate resin composition that is excellent in various properties such as fatigue characteristics, heat resistance, and retention heat stability, and is also excellent in recycling characteristics, and resins formed by molding the aromatic polycarbonate resin composition moldings. Background technique [0002] As a general-purpose engineering plastic, aromatic polycarbonate resin has excellent transparency, impact resistance, heat resistance, and dimensional stability. Due to its excellent characteristics, it is widely used in electrical and electronic equipment parts, OA equipment parts, and mechanical parts. , automotive parts and other wide-ranging fields. In addition, a po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08G63/85C08J11/04C08L67/02
CPCY02P20/143Y02W30/62
Inventor 中村充中野博岩木光地
Owner MITSUBISHI ENG PLASTICS CORP
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