Unlock instant, AI-driven research and patent intelligence for your innovation.

Polycarbonate resin composition and molded product produced from same

A technology of polycarbonate resin and composition, which is applied in the field of polycarbonate resin composition and molded products produced therefrom, and can solve the problem of thermal stability or wet heat stability deterioration and yellowness index increase of polycarbonate resin composition Large size, deterioration of transparency of polycarbonate resin composition, etc.

Inactive Publication Date: 2018-06-08
LOTTE ADVANCED MATERIALS CO LTD
View PDF9 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, an excessive amount of the release agent may lead to deterioration of thermal stability or wet heat stability of the polycarbonate resin composition, generation of many gas silver streaks, and increase of yellowness index
In addition, some release agents can deteriorate the transparency of polycarbonate resin compositions

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polycarbonate resin composition and molded product produced from same
  • Polycarbonate resin composition and molded product produced from same
  • Polycarbonate resin composition and molded product produced from same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 to 6 and comparative example 1 to 6

[0091] Examples 1 to 6 and Comparative Examples 1 to 6: Preparation of polycarbonate resin composition

[0092] According to the composition and content listed in Table 1 and Table 2, the above components were placed in a twin-screw extruder (L / D=35, diameter: 45mm) and allowed to operate at 260°C to 300°C and 150rpm to 350rpm The pellets were prepared by melt extrusion at a certain screw speed. The pellets were dried at 120°C for 4 hours or more and molded in an injection molding machine (DHC 120WD, Dongshin Hydraulic Pressure Co., Ltd. at a molding temperature of 290°C to 340°C and a mold temperature of 65°C to 70°C , 120 tons) by injection molding to prepare samples. The following properties of the prepared samples were evaluated by the following methods, and the results are shown in Table 1.

[0093] performance evaluation

[0094] (1) Mold release force (unit: N): After injection molding the sample at an injection molding temperature of about 310° C. and a mold temper...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
heat deflection temperatureaaaaaaaaaa
transmittivityaaaaaaaaaa
transmittivityaaaaaaaaaa
Login to View More

Abstract

A polycarbonate resin composition of the present invention comprises: a polycarbonate resin; and a releasing agent containing a fatty acid ester compound and paraffin wax, wherein the fatty acid estercompound and the paraffin wax are contained in a weight ratio ranging from about 1: about 0.2 to about 1: about 1. The polycarbonate resin composition is excellent in terms of release properties, transparency, heat resistance, hydrolysis resistance, etc.

Description

technical field [0001] The present invention relates to polycarbonate resin compositions and molded articles produced therefrom. More specifically, the present invention relates to a polycarbonate resin composition having good properties in terms of mold release performance, transparency, heat resistance, hydrolysis resistance, etc., and molded articles produced therefrom. Background technique [0002] Polycarbonate resin is a representative thermoplastic resin having a heat deflection temperature of about 135° C. or higher, and is excellent in transparency, impact resistance, self-extinguishing (self-extinction), dimensional stability, heat resistance, etc. Due to its good properties, it is used in various fields including vehicle components, electrical / electronic products, office machines, etc. [0003] However, polycarbonate resins and molded articles including the same have problems of complicated shapes and difficult release from molds when injection molding large prod...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L91/06C08K5/11C08K5/00C08J5/00
CPCC08L91/06C08K5/0041C08K5/18C08L69/00C08K5/103C08J5/00C08J2369/00C08J2491/06
Inventor 李恩别许宗赞权五成池俊镐
Owner LOTTE ADVANCED MATERIALS CO LTD