Polycarbonate resin molding material for articles to be coated, molded article and coated molded article

A technology of polycarbonate resin and polycarbonate, applied in the direction of coating, etc., can solve the problem of extremely low impact resistance and achieve the effect of excellent adhesion of the coating film

Active Publication Date: 2016-11-09
IDEMITSU KOSAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, if a resin material with high impact resistance such as polycarbonate resin is coated with a paint in order to give a high-end appearance, the impact resistance that the resin material should have is extremely reduced.

Method used

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  • Polycarbonate resin molding material for articles to be coated, molded article and coated molded article
  • Polycarbonate resin molding material for articles to be coated, molded article and coated molded article
  • Polycarbonate resin molding material for articles to be coated, molded article and coated molded article

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0163]

[0164] 2,000 ppm of sodium dithionite was added to a 5.6% by mass sodium hydroxide aqueous solution relative to bisphenol A (BPA) dissolved thereafter, and bisphenol A was dissolved therein so that the bisphenol A concentration was 13.5% by mass to prepare bisphenol A aqueous sodium hydroxide solution.

[0165] With the sodium hydroxide aqueous solution of bisphenol A 40L (hereinafter, L is abbreviated as liter.) / hr, the flow rate of methylene chloride 15L / hr, and the flow rate of carbonyl chloride 4.0kg / hr, the inner diameter is 6mm, and the tube length is 30m. into the tubular reactor continuously.

[0166] The tubular reactor has a jacket portion, and cooling water is passed through the jacket to keep the temperature of the reaction solution at 40°C or lower.

[0167] The reaction solution flowing out of the tubular reactor was continuously introduced into a baffled tank reactor with an internal volume of 40 L of swept blades, and 2.8 L / hr of bisphenol A in aque...

manufacture example 1

[0171]

[0172] In a 50L tank reactor equipped with baffle plates, paddle-type stirring blades, and cooling jackets, add 15L of the polycarbonate oligomer solution produced in Preparation Example 1, 9.0L of dichloromethane, and dimethylsiloxane 384 g of o-allylphenol terminal-modified polydimethylsiloxane (PDMS) with an average repeating number n of alkane repeating units of 90 and 8.8 mL of triethylamine were added thereto with 6.4% by mass of sodium hydroxide under stirring 1389 g of the aqueous solution was used to react the polycarbonate oligomer and the allylphenol terminal-modified PDMS for 10 minutes.

[0173] To this polymerization solution, a dichloromethane solution of p-tert-butylphenol (PTBP) (a solution obtained by dissolving 137 g of PTBP in 2.0 L of dichloromethane), an aqueous sodium hydroxide solution of bisphenol A (in 8.4 L of water 577 g of sodium hydroxide and 2.0 g of sodium dithionite were dissolved, and 1012 g of bisphenol A was dissolved in the obtai...

Embodiment 1～2 and comparative example 1～4

[0185] The components were mixed in the proportions shown in Table 1, and pelletized at a resin temperature of 280° C. using a vented 50 mmφ single-screw extruder to obtain pellets containing a polycarbonate resin molding material for coating.

[0186] The pellets obtained by the above method were injection-molded with an injection molding machine (model: IS100EN, manufactured by Toshiba Machine Co., Ltd.) under the molding conditions of a cylinder temperature of 240°C and a mold temperature of 40°C to obtain various test pieces for evaluation. .

[0187]Then, with respect to the obtained test piece, paint (manufactured by Musashi Paint Co., Ltd., main agent: CPX79 silver, curing agent: H-250, organic solvent: ester system, main agent / curing agent / organic solvent (mass ratio) = 10 / 1 / 10) to obtain a coating test piece having a coating film with a thickness of 9±1 μm. And the coating drying conditions were 80 degreeC and 30 minutes.

[0188] The performance evaluation describe...

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Abstract

A polycarbonate resin molding material for articles to be coated, which contains (A) a polycarbonate resin containing (A-1) a polycarbonate-polyorganosiloxane copolymer having a specific structure and (B) a copolymer having a constituent unit derived from butadiene, and wherein the content of the polyorganosiloxane block moiety in the whole molding material is 0.50-10% by mass and the content of the constituent unit derived from butadiene in the whole molding material is 1-10% by mass.

Description

technical field [0001] The present invention relates to a polycarbonate resin molding material for coating, a molded article, and a painted molded article. Background technique [0002] Polycarbonate resins are expected to be widely used in various fields such as electric and electronic equipment fields and automobile fields because they are tough, have excellent impact resistance and electrical properties, and are also excellent in dimensional stability of molded products obtained. For example, it can be widely used as a raw material resin for the manufacture of housings of electric and electronic equipment, automotive parts, and precision molded parts. [0003] Among them, in the application of automobile parts, resin materials such as polycarbonate resin are widely used because it is expected to reduce exhaust gas and reduce fuel consumption through weight reduction. At this time, in automobile exterior parts, high impact resistance is required from the viewpoint of safe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L51/04C08L55/02C08J7/043C08J7/046
CPCC08G77/448C08L83/10C08L69/00C08J7/043C08J7/046C08L51/04C08L55/02C08L83/04C08L33/12C08L23/22C08J5/00C08J7/04C08K5/04C08J7/065C08J2369/00C08L2205/025C08L2205/03C08L2205/035
Inventor 青木佑介冈本义生村上毅
Owner IDEMITSU KOSAN CO LTD
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