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Molded body for outdoor installation

A molded body, polycarbonate technology, applied in the field of molded bodies for outdoor installations, can solve the problems of reduced weather resistance, yellowing, and reduced impact resistance of polycarbonate resin, and achieve the effect of excellent impact resistance

Pending Publication Date: 2019-01-04
IDEMITSU KOSAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the molded articles for outdoor installation molded from the aromatic polycarbonate resin composition specifically shown in these patent documents have the following problems: the weather resistance is reduced due to exposure to sunlight, rain and wind, and over time After that, the excellent impact resistance of polycarbonate resin is greatly reduced or yellowing occurs

Method used

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  • Molded body for outdoor installation
  • Molded body for outdoor installation
  • Molded body for outdoor installation

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0167]

[0168] 2000 ppm of sodium dithionite was added to a 5.6 mass % sodium hydroxide aqueous solution with respect to the bisphenol A (BPA) to be dissolved later, and bisphenol A was dissolved therein so that the bisphenol A concentration became 13.5 mass % to prepare bisphenol A (BPA). Phenol A in aqueous sodium hydroxide solution.

[0169] The aqueous sodium hydroxide solution of bisphenol A, dichloromethane, and phosgene were continuously fed at an amount of 40 L (hereinafter, L is an abbreviated form of liter.) / hr, a flow rate of 15 L / hr, and a flow rate of 4.0 kg / hr, respectively. It is passed into a tubular reactor with an inner diameter of 6 mm and a tube length of 30 m.

[0170] The tubular reactor has a jacket part, and cooling water is passed into the jacket to keep the temperature of the reaction solution below 40°C.

[0171]The reaction solution flowing out from the tubular reactor is continuously introduced into a baffled tank reactor with an internal volum...

manufacture example 1

[0175]

[0176] 15 L of the polycarbonate oligomer solution, 9.0 L of dichloromethane, and dimethylsiloxane were put into a 50 L tank reactor equipped with a baffle plate, a paddle-type stirring blade, and a cooling jacket. 384 g of ortho-allylphenol terminal-modified polydimethylsiloxane (PDMS) and 8.8 mL of triethylamine having an average repeating number n of 90 of the repeating unit, were added thereto with stirring 1389 g of 6.4% by mass sodium hydroxide aqueous solution , for 10 min to react polycarbonate oligomers with allylphenol end-modified PDMS.

[0177] A dichloromethane solution of p-tert-butylphenol (PTBP) (132 g of PTBP dissolved in 2.0 L of dichloromethane), an aqueous sodium hydroxide solution of bisphenol A (sodium hydroxide 577 g and 2.0 g of sodium dithionite were dissolved in 8.4 L of water in an aqueous solution obtained by dissolving 1012 g of bisphenol A), and a polymerization reaction was performed for 50 minutes.

[0178] For dilution, 10 L of meth...

manufacture example 2

[0183]

[0184] In Production Example 1, using ortho-allylphenol terminal-modified PDMS in which the average repeating number n of dimethylsiloxane repeating units was 150, and changing the usage amount to 224 g, the same method as in Production Example 1 was used. PC-PDMS copolymer 2 was produced similarly.

[0185] The obtained PC-PDMS copolymer 2 had a PDMS block content determined by NMR of 3.5% by mass, a viscosity value measured in accordance with ISO1628-4 (1999) of 48.2, and a viscosity average molecular weight Mv of 18,000.

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Abstract

Provided is a molded body for outdoor installation, which is obtained by molding a polycarbonate-based resin composition including a blend of: 100 parts by mass of a polycarbonate-based resin (A) including 30 mass% to 100 mass% of a polycarbonate-polyorganosiloxane copolymer (A-1) having a polycarbonate block including, in a main chain thereof, a repeating unit represented by the general formula (I), and a polyorganosiloxane block containing a siloxane repeating structure represented by the general formula (II) and having an average number n of repetitions of from 30 to 500, and 70 mass% to 0mass% of an aromatic polycarbonate resin (A-2) except the polycarbonate-polyorganosiloxane copolymer (A-1); and 0.001 part by mass to 1 part by mass of a UV absorber (B), in which a content x of the polyorganosiloxane block in the polycarbonate-based resin (A) is from 2.0 mass% to 15.0 mass%, and a product nx of the average number n of repetitions and the content x of the polyorganosiloxane blockis 200 or more.

Description

[0001] This application is a divisional application of a patent application with an application date of November 25, 2014, an application number of 201480069754.0, and an invention title of "Molded Body for Outdoor Installation". technical field [0002] The present invention relates to a molded body for outdoor installation. More specifically, it relates to a polycarbonate resin composition that contains a specific polycarbonate resin composition, maintains the impact resistance when used outdoors for a long time, is excellent in impact resistance at low temperature, can prevent yellowing of molded products during molding, and can withstand humidity and heat. Molded body for outdoor installation with excellent stability. Background technique [0003] Aromatic polycarbonate resins (PC) produced from bisphenol A and the like are widely used as various parts in the electric / electronic field, automobile field, construction field, etc. due to their excellent heat resistance, mec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/10C08L69/00C08K5/3475C08K5/526C08G64/06C08G77/448C08G64/24
CPCC08L69/00C08G77/448C08K5/005C08L83/10C08L83/04C08L83/12
Inventor 青木佑介
Owner IDEMITSU KOSAN CO LTD
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