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Polycarbonate resin composition

a technology of polycarbonate resin and composition, which is applied in the direction of seats, transportation and packaging, railway bodies, etc., can solve the problems of higher fire protection standards and inability to meet the requirements of polycarbonate resin compositions, and achieve excellent low smoke generation performance, and excellent low heat release performance.

Pending Publication Date: 2022-10-13
MITSUBISHI ENG PLASTICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent describes two inventions that provide a polycarbonate resin composition that has excellent properties for use in railway vehicle interiors. The first invention has low heat release and low smoke generation, making it ideal for use as a material for railway interiors. The second invention also has these excellent properties, making it even better suited for use in these interiors.

Problems solved by technology

However, these polycarbonate resin compositions are unable to comply with the aforementioned standard, which requires higher fire protection standards.

Method used

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  • Polycarbonate resin composition
  • Polycarbonate resin composition
  • Polycarbonate resin composition

Examples

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examples of first invention

[0219]The first invention is specifically described in the following using examples in accordance with the first invention. However, the first invention should not be construed as being limited to or by the following examples.

[0220]The various components used in the examples and comparative examples are as indicated in the following Table 1.

TABLE 1componentdesignationpolycarbonateA1-1aromatic polycarbonate resin produced by melt transesterificationresin using bisphenol C as a starting material(A1)viscosity-average molecular weight Mv: 28000,pencil hardness: 2H, has branched structureA1-2aromatic polycarbonate resin produced by interfacial polymerizationusing bisphenol A and bisphenol C as starting materials in a 50:50 molar ratioviscosity-average molecular weight Mv: 25000,pencil hardness: F, does not have a branched structurepolycarbonateA2-1aromatic polycarbonate resin produced by melt polymerizationresin using bisphenol A as a starting material(A2)product name: Novarex M7028B, Mi...

examples of second invention

[0242]The second invention is specifically described in the following using examples in accordance with the second invention. However, the second invention should not be construed as being limited to or by the following examples.

[0243]Besides the components already described above, the components newly used in the examples and comparative examples are as given in the following Table 11.

TABLE 11componentdesignationother resinPPEmodified polyphenylene ether resinproduct name: Iupiace PX-100L, Mitsubishi Engineering-Plastics CorporationPARpolyarylate resinproduct name: U-Polymer, POWDER RX, Unitika Ltd.PEIpolyetherimide resinproduct name: ULTEM1000, SABIC Innovative Plastics

examples 69 to 79

[0244]The components indicated above were blended and mixed in the proportions (mass parts in all instances) given in Table 11 below and kneaded at a barrel temperature of 280° C. using a twin-screw extruder (“TEX30 XCT”, The Japan Steel Works, Ltd.) to produce polycarbonate resin composition pellets. The obtained pellets were dried for 5 hours at 80° C., followed by test specimen fabrication according to the same procedure as described above and execution of the same evaluations.

TABLE 12comparativeexamplesexamplecomponentdesignation69707172737475767778797PC resin (A1)A1-1002500000000PC resin (A2)A2-110010098951001001001000100100100A2-2000000000000A2-300000000100000additional resinPPE00000110000100other than PC resinPAR0000001100000PEI0000000110000phosphorus flameB-10000000000013retardant (B)B-300000000013130B-461313131315151513000silicone flameC-41516161616999161688retardant (C)inorganic fillerD-1323434342838383834343533(D)fluoropolymerE0.20.20.20.20.20.20.20.20.20.20.20.2(E)stabil...

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Abstract

A polycarbonate resin composition comprising, 100 mass parts of (A1) a polycarbonate resin that contains a polycarbonate resin having a structural unit of the following general formula (1) and (A2) a polycarbonate resin having a structural unit of the general formula (2) in a mass ratio (A1) / (A2) of 100 / 0 to 10 / 90; 3 to 20 mass parts of a phosphorus flame retardant (B); 2 to 20 mass parts of a silicone flame retardant (C); and 3 to 100 mass parts of an inorganic filler (D), wherein the phosphorus flame retardant (B) is a phosphazene compound and / or a condensed phosphate ester,[C1]

Description

TECHNICAL FIELD[0001]The present invention relates to a polycarbonate resin composition and more particularly relates to a polycarbonate resin composition that achieves an excellent low heat release performance and an excellent low smoke generation performance.BACKGROUND ART[0002]Resin materials have in recent years begun to be used for various interior members for the vehicles typical of, for example, railways, and polycarbonate resins have already entered into use for interior members in, e.g., railway vehicles and aircraft.[0003]Application as a railway vehicle material requires compliance with the flame retardancy standards for railway vehicles set by the particular country or a particular governmental agency. Moreover, more rigorous fire protection standards than in the past have come to be required of vehicle materials based on considerations of enhancing safety. In particular, the newly issued EN 45545-2 European Railway Standard for Fire Safety, and the like require that an ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C08L69/00B61D17/00B61D33/00B61D37/00
CPCC08L69/00B61D17/00B61D33/0007B61D37/00B61D37/003C08L2201/02C08L2205/025C08L2205/03C08K3/346C08K5/0066C08K5/521C08K5/5399C08L2205/02C08L2205/035C08L51/085C08L27/18C08L71/12C08K3/34C08K5/523C08L67/03C08L79/08
Inventor SOMA, MINORU
Owner MITSUBISHI ENG PLASTICS CORP
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