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Polyamide resin composition including carboxylic acid derivative

A polyamide resin and carboxylic acid derivative technology, applied in the field of polyamide resin composition, can solve the problems of damage to the mechanical properties of the appearance of molded products, softening, slow crystallization speed, etc., and achieve the effect of excellent transparency

Inactive Publication Date: 2018-08-03
NISSAN CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, polyamide resins have a disadvantage that softening occurs at a temperature equal to or higher than the glass transition temperature (Tg) when crystallization is not sufficiently performed due to a slow crystallization rate.
In addition, although the crystallinity of the polyamide resin is increased by heat treatment (annealing) at a predetermined temperature in the mold during injection molding, the crystallization rate is slow, so the molding cycle is poor, and there is a problem in terms of productivity.
In addition, when crystallization is performed only by polyamide resin, spherulites having a size equal to or greater than the wavelength of light that cause light scattering grow, which impairs the appearance (opacity) and mechanical properties of molded products. s reason

Method used

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  • Polyamide resin composition including carboxylic acid derivative
  • Polyamide resin composition including carboxylic acid derivative
  • Polyamide resin composition including carboxylic acid derivative

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0104] Hereinafter, although an Example is given and this invention is demonstrated more concretely, this invention is not limited to the following Example.

[0105] In addition, in the examples, the apparatus and conditions used for the preparation of the sample and the analysis of the physical properties are as follows.

[0106] (1) 5% weight loss temperature (Td 5％ )

[0107] Device: Thermo plus EVO II TG8120 manufactured by Rigaku Co., Ltd.

[0108] Measuring conditions: under air atmosphere

[0109] Heating rate: 10°C / min (30~500°C)

[0110] (2) Differential scanning calorimetry (DSC)

[0111] Device: Diamond DSC manufactured by Perkin Elma Japan Co., Ltd.

[0112] (3) Total light transmittance

[0113] Device: Nippon Denshoku Industry Co., Ltd. haze meter NDH 5000

[0114] (4) Melt mixing

[0115] Device: ラボプラストミルマイクロ KF6V manufactured by Toyo Seiki Seisakusho Co., Ltd.

[0116] (5) hot pressing

[0117] Device: Tester Sangyo Co., Ltd. SA-302 bench type test pr...

manufacture example 1

[0124] [Manufacturing example 1] N 1,N 4 -Manufacture of bis(4-acetamidophenyl)succinamide

[0125] Into a reaction flask equipped with a stirrer, a thermometer, a dropping funnel, and a condenser, 3.00 g (20 mmol) of 4-aminoacetanilide [manufactured by Tokyo Chemical Industry Co., Ltd.], 2.02 g (20 mmol) of TEA, and 45.2 g of DMAc (relatively 9 times the total mass of 4-aminoacetanilide and TEA), cooled in an ice bath while stirring. To this solution, a solution obtained by dissolving 1.55 g (10 mmol) of succinoyl chloride [manufactured by Tokyo Chemical Industry Co., Ltd.] in 14.0 g of DMAc (9 times the mass of succinoyl chloride) was slowly added dropwise, Stirring was carried out for 3 hours. 3.6 g (200 mmol) of water was added dropwise to the reaction mixture to quench unreacted succinoyl chloride. The product was filtered under reduced pressure, washed with 100 g of a water-methanol mixed solution (mass ratio 3:7), and dried to obtain the target product (Compound A) ...

manufacture example 2

[0127] [Manufacturing example 2] N 1 ,N 5 -Manufacture of bis(4-acetamidophenyl)glutaramide

[0128] Separately, 1.69 g (10 mmol) of glutaryl chloride [manufactured by Tokyo Chemical Industry Co., Ltd.] was changed to succinoyl chloride, and the amount of water added in the post-treatment was changed to 30 g. In the same manner, the target product (compound B) was obtained as a white powder.

[0129] 5% weight reduction temperature (Td 5％ ) is 342.4°C.

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PUM

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Abstract

To provide a polyamide resin composition containing an added crystal nucleator suitable for promoting the crystallization of a polyamide resin and not triggering discoloration in the resin, the polyamide resin composition being capable of raising the crystallization rate and achieving better molding process properties and heat resistance in comparison with the polyamide resin. A polyamide resin composition including a polyamide resin and a crystal nucleator comprising a carboxylic acid derivative represented by formula [1]. B1-L1-A-L2-B2 [1] (In the formula, A represents an optionally substituted C1-6 alkylene group or C6-10 divalent aromatic group, B1 and B2 represent optionally substituted C3-6 cycloalkyl groups or optionally substituted C6-10 aromatic groups, and L1 and L2 represent -C(=O)NR1- or -C(=O)O-.).

Description

technical field [0001] The present invention relates to a polyamide resin composition, and more specifically, to a polyamide resin composition containing a crystal nucleating agent composed of a carboxylic acid derivative, and a polyamide resin molded article obtained from the resin composition. Background technique [0002] Polyamide resins are generally widely used as engineering plastics excellent in mechanical properties, chemical resistance, oil resistance, and the like. Among them, polyamide 11 and polyamide 12 are excellent in properties such as chemical resistance, impact resistance, cold impact resistance, and low water absorption, and thus are expected to be used as, for example, food containers, bearings, connectors, fuel pipes for automobiles (tube) / Molding materials for hoses, interior materials, housings and components of electrical / electronic products. [0003] However, polyamide resins have a disadvantage that, since the crystallization rate is slow, soften...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08K5/20C08L77/02C08L77/06
CPCC08L77/00C08L77/02C08L77/06C08K5/0083C08K5/11C08K5/12C08K5/20C08K5/18
Inventor 小高一利
Owner NISSAN CHEM CORP
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