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Flame-retardant resin composition and melt-molded body

A resin composition and flame retardant technology are applied in the field of resin compositions to achieve the effects of flame retardancy, transparency, and excellent aesthetics.

Inactive Publication Date: 2014-05-28
TOYOBO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, thermoplastic resins are flammable, but flame retardancy may be required depending on the location and conditions of use

Method used

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  • Flame-retardant resin composition and melt-molded body
  • Flame-retardant resin composition and melt-molded body
  • Flame-retardant resin composition and melt-molded body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0052] In order to further describe the present invention in detail, the following examples and comparative examples are given, but the present invention is not limited to the examples. In addition, "part" and "%" in each example are based on weight. In addition, each evaluation value is the numerical value measured by the following method.

[0053]

[0054] (1) Phosphorus concentration: measured by atomic absorption photometry. The unit is mg / kg.

[0055] (2) Transparency: A 10 cm square flat plate with a thickness of 2 mm was produced by injection molding, and the haze was measured with a haze meter (manufactured by Nippon Denshoku Industries Co., Ltd., MODEL NDH2000). In addition, samples with a haze exceeding 10% were judged as "opaque".

[0056] (3) Flame retardancy

[0057] Test method: according to UL-94 (average fire extinguishing time of 5 samples)

[0058] Test piece thickness: 1.6mm, 3.2mm

[0059] Evaluation: V-0, V-1, V-2 in the specified order

[0060] (...

Embodiment 1

[0064] To the thermoplastic resin (A), 80 parts by weight of polycarbonate resin (manufactured by Mitsubishi Engineering Plastics Corporation, trade name: Upiron H-3000), phosphorus-containing copolyester resin (B) (manufactured by Toyobo Co., Ltd., trade name Name: Bilon GH-230, phosphorus concentration 30000 mg / kg, limiting viscosity 0.66 dL / g) 10 parts by weight, phosphorus-containing compound (C) (manufactured by Sanko Co., Ltd., trade name: BCA, phosphorus concentration 101000 mg / kg) 10 parts by weight The mixture was mixed in a Henschel mixer, and melt-kneaded in a vented twin-screw extruder to obtain pellets of the resin composition 1. The obtained pellets were molded with an injection molding machine, and a test piece for a flame retardancy test (thickness 1.6 mm, 3.2 mm) and a 10 cm square flat plate with a thickness of 2 mm were produced, and physical properties were measured according to the above analysis and evaluation methods.

Embodiment 2～5， comparative example 1～3

[0066] The same operation as in Example 1 was performed, but the compounding ratio was changed as shown in Table 1, resin compositions 2 to 8 were produced, and it was evaluated in the same manner as in Example 1. The evaluation results are shown in Table 1.

[0067] [Table 1]

[0068]

[0069] H-3000: Polycarbonate resin, manufactured by Mitsubishi Engineering-Plastics Corporation, brand name: Yupiron H-3000

[0070] RE-530: Polyethylene terephthalate resin, manufactured by Toyobo Co., Ltd., trade name: RE-530, limiting viscosity 0.53dL / g

[0071] GH-230: Copolyester resin (B) obtained by copolymerizing the phosphorus-containing component represented by the general formula (1), manufactured by Toyobo Co., Ltd., trade name: Bilon GH-230, phosphorus concentration 30000 mg / kg, intrinsic viscosity 0.66 dL / g

[0072] BCA: a phosphorus-containing compound (C) represented by the general formula (2), manufactured by Sanko Co., Ltd., trade name: BCA, and a phosphorus concentrati...

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Abstract

Provided is a flame-retardant resin composition which has excellent flame retardancy and less bleed out, while exhibiting high transparency that is close to the original state of a thermoplastic resin. This flame-retardant resin composition contains (A) a thermoplastic resin, (B) a copolymerized polyester resin wherein a phosphorus-containing component represented by general formula (1) is copolymerized, and (C) a phosphorus-containing compound represented by general formula (2). General formula (1): (In general formula (1), each of R1 and R2 independently represents a substituent such as an alkyl group having 1-4 carbon atoms; each of m and n independently represents an integer of 0-4; and B represents an ester-forming functional group.) General formula (2): (In general formula (2), each of R1-R5 independently represents a hydrogen atom or a substituent such as an alkyl group having 1-6 carbon atoms; and each of X1-X3 independently represents a hydrogen atom or a substituent such as an alkyl group having 1-6 carbon atoms.)

Description

technical field [0001] The present invention relates to a resin composition comprising a thermoplastic resin and a specific phosphorus-containing copolyester resin and a specific phosphorus-containing compound. The resin composition of the present invention has a transparent appearance and flame retardancy by blending a specific phosphorus-containing copolyester resin and a specific phosphorus-containing compound. Background technique [0002] In recent years, thermoplastic resins have been widely used in automotive parts, home appliances, and the like. Generally, thermoplastic resins are flammable, but flame retardancy may be required depending on the location and conditions of use. Therefore, conventionally, a method of adding a flame retardant to a thermoplastic resin to impart flame retardancy has been employed. Various flame retardants effective in such applications are known, and among them, phosphorus-containing compounds are representative flame retardants (see Pat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L101/00B32B27/00B32B27/18B32B27/36C08K5/5313C08L67/00
CPCC08L101/00B32B27/18C08L69/00C08G63/6926C08L67/00B32B27/36C08K5/5313B32B27/06B32B27/302B32B27/32B32B27/34B32B27/365B32B2307/3065B32B2307/412C08L67/02C08K5/0066C08K5/49C08J5/18C08L25/06
Inventor 松尾高志志贺健治
Owner TOYOBO CO LTD
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