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Resin composition

A resin composition, resin technology, applied in the field of resin composition, can solve the problems of limited use, low glass transition temperature, etc., and achieve the effect of good fluidity

Inactive Publication Date: 2011-06-29
MITSUBISHI GAS CHEM CO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since PAS resin has a relatively low glass transition temperature, its use is limited in applications that require excellent sliding properties at high temperatures above 100°C.

Method used

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  • Resin composition
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Examples

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Embodiment

[0065] The present invention will be described in more detail by way of examples, but the present invention is not limited to these examples. In addition, the PAI resins used in the following examples and comparative examples were produced in the following synthesis examples.

Synthetic example 1

[0067] 3000 g of N-methylpyrrolidone with a moisture content of 15 ppm was charged into a 5 liter reactor having a stirrer, a thermometer, and a reflux condenser topped with a drying tube filled with calcium chloride. Thereto, 555 g of anhydrous trimellitic acid (50 mol %) were added, followed by 503 g of 2,4-toluene diisocyanate (50 mol %), and 2.955 g of pure water were added. Next, the moisture content in the system was measured using a Karl Fischer moisture meter, and it was found that the moisture content in the system after adding pure water was 1000 ppm. Initially, it took 30 minutes to raise the temperature of the content from room temperature to 120° C., and the temperature was maintained to continue the polymerization reaction for 8 hours. After the completion of the polymerization reaction, the polymerization solution was added dropwise to methanol having twice the volume of N-methylpyrrolidone under vigorous stirring to precipitate the polymer. The precipitated po...

Synthetic example 2

[0069] A PAI resin was obtained in the same manner as in Synthesis Example 1, except that 0.555 g of pure water was added so that the water content in the system after the addition of pure water was 200 ppm. The reduced viscosity of this PAI resin was measured in the same manner as in Synthesis Example 1, and the reduced viscosity was 0.32 dl / g.

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Abstract

Provided are resin compositions with favorable melt fluidity, sliding characteristics, toughness, and mechanical strength. The resin compositions comprise an aromatic polyamide imide resin (A) that is obtained with the moisture content in the reaction system at 100 to 5000 ppm during the reaction to polymerize an aromatic tricarboxylate anhydride and a diisocyanate and for which the reduced viscosity in N, N-dimethyl acetamide at 30 DEG C is 0.15 to 0.40 dl / g, and a polyarylene sulfide resin (B).

Description

technical field [0001] The present invention relates to a resin composition containing an aromatic polyamideimide resin and a polyarylene sulfide resin, which is excellent in sliding properties, mechanical strength, toughness, and fluidity during melting. Background technique [0002] Aromatic polyamide-imide resin (hereinafter, abbreviated as "PAI resin") is a plastic material that is excellent in heat resistance, mechanical strength, electrical properties, and chemical resistance, and has self-lubricating properties. However, since PAI resins have poor melt fluidity, injection molding of most PAI resins is often difficult. For this reason, in the case of molding the PAI resin, the current situation is to use a molded body obtained by molding the PAI resin by a pressure molding method as a molded body, or to inject the molded body after injection molding the precursor of the PAI resin. A molded body obtained through a long-term post cure reaction. [0003] On the other ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/08C08G18/34C08G73/14C08L81/02
CPCC08L81/04C08G73/14C08G18/343C08L81/02C08G18/7621C08L79/08C08L81/00C08L2666/20C08G18/34
Inventor 山田敏明伴一柳泽贤一
Owner MITSUBISHI GAS CHEM CO INC
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