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

Polycarbonate resin composition

A technology of resin composition and polycarbonate, which is applied in the field of polycarbonate resin composition and its molded products, can solve the problems of low total light transmittance and poor brightness, and achieve excellent transparency, flame retardancy, and transparency excellent effect

Active Publication Date: 2021-04-20
IDEMITSU KOSAN CO LTD
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the total light transmittance, which is one of the indicators of transparency, is lower than that of polymethyl methacrylate (PMMA). When the product is composed of an optical molded product and a light source made of polycarbonate resin, the brightness is poor, so ask for improvement

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
  • Polycarbonate resin composition
  • Polycarbonate resin composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0229] Hereinafter, the present invention will be described in more detail through examples, but these examples do not limit the present invention at all.

[0230] The characteristic values ​​and evaluation results in each example were determined as follows.

[0231] (1) Branching rate of polycarbonate resin (A)

[0232] The branching rate of the polycarbonate-based resin (A) of the examples and comparative examples described later was determined by 1 Determined by H-NMR measurement. Calculated in the form of the total molar weight of the molar weight of the structural unit derived from the branching agent / (the structural unit derived from the dihydric phenol+the structural unit derived from the branching agent+terminal unit)×100 (expressed in mol%) out.

[0233] (2) Flame retardancy

[0234] Using pellets obtained from polycarbonate-based resin compositions of Examples and Comparative Examples described later, a vertical combustion test was performed on a test piece havin...

manufacture example 1

[0247] Production example 1 (manufacture of branched PCI:THPE0.40mol%)

[0248] (Polycarbonate oligomer (i) synthesis process)

[0249] In 5.6wt% sodium hydroxide aqueous solution, 2000 mass ppm of sodium dithionite was added with respect to the BPA (bisphenol A) dissolved thereafter, and BPA was dissolved therein so that the BPA concentration was 13.5wt%, and the hydrogen of BPA was prepared. Aqueous sodium oxide solution.

[0250] In a 5.6 wt% sodium hydroxide aqueous solution, 2000 mass ppm of sodium dithionite was added relative to THPE (1,1,1-tris(4-hydroxyphenylethane)) dissolved thereafter, wherein the concentration of THPE was THPE was dissolved in 11.3wt% mode, and an aqueous sodium hydroxide solution of THPE was prepared.

[0251] The aqueous sodium hydroxide solution of the above-mentioned BPA is passed continuously with a flow rate of 42L / hr, the aqueous sodium hydroxide solution of THPE with a flow rate of 0.41L / hr, methylene chloride with a flow rate of 15L / hr,...

manufacture example 2

[0261] Production example 2 (manufacture of branched PC2:THPE0.90mol%)

[0262] In the polycarbonate oligomer synthesis process, except that the supply rate of the sodium hydroxide aqueous solution of THPE was set to 0.87L / hr, and the supply rate of the methylene chloride solution (concentration: 4.0wt%) of PTBP was set at 4.6L / hr Except for hr, branched polycarbonate-based resin 2 was obtained in the same manner as in Production Example 1. The polycarbonate oligomer obtained in the polycarbonate oligomer synthesis step had a concentration of 330 g / L and a chloroformate group concentration of 0.72 mol / L.

[0263] pass 1 The branching ratio determined by H-NMR was 0.90 mol%, and the viscosity average molecular weight Mv measured in accordance with ISO1628-4 (1999) was 22,800.

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
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
widthaaaaaaaaaa
Login to View More

Abstract

A polycarbonate resin composition contains a polycarbonate resin (A) which contains a branched polycarbonate resin (A-1) and / or an aromatic polycarbonate resin (A-2) which is not the branched polycarbonate resin (A-1), also contains a fluorine-containing compound (B) which has a hydrocarbon structure in which all hydrogen atoms in the hydrocarbon structure have been substituted with fluorine, and also contains a polyether (C) which has a polyoxyalkylene structure, wherein the content of the polyether (C) having the polyoxyalkylene structure is 0.02-2.0 parts by mass, inclusive, relative to 100 parts by mass of the polycarbonate resin (A), and the mass ratio of the fluorine-containing compound (B) to the polyether (C) is 15.00 or less.

Description

technical field [0001] The present invention relates to a polycarbonate resin composition and its molded article. Background technique [0002] Polycarbonate resin has excellent transparency, mechanical properties, thermal properties, electrical properties and weather resistance. Utilizing this characteristic, it is used for optical molded products such as resin-made lighting equipment diffusion covers such as various lighting covers and display covers, and lenses. For these optical molded articles, in addition to thin flame retardancy, high transmittance and the like are required. However, the total light transmittance, which is one of the indicators of transparency, is lower than that of polymethyl methacrylate (PMMA). When the product is composed of an optical molded product and a light source made of polycarbonate resin, the brightness is poor, so Ask for improvement. In addition, in order to obtain higher flame retardancy, it has been reported to use a branched polyc...

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): C08L69/00C08K5/42C08L27/18C08L71/02
CPCC08L71/02C08K5/42C08L69/00C08L27/18C08G64/24C08L2205/035
Inventor 鸟居孝洋菅浩一
Owner IDEMITSU KOSAN CO LTD