Cheil Industries Inc.

Kyung-Hoon Seo

Sam-Joo Yang

Jong-Cheol Lim

Sang Hyun Hong

Sung Hee Ahn

Bok Nam Jang

Su Hak Bae

Jae Ho Yang

Young Gil Jang

Sang Ho Hong

Gyu Chul Lee

The present invention relates to a flame retardant polycarbonate thermoplastic resin composition that comprises a polycarbonate resin, a rubber modified vinyl-grafted copolymer, a phosphorous mixture of a cyclic phosphazene oligomer compound and a phosphate ester morpholide compound or a phosphoric acid ester as a flame retardant, and, optionally, a fluorinated polyolefin resin, which has good flame retardancy, heat resistance, mechanical strength, impact strength, heat stability, processability, and appearance.

Flame retardant thermoplastic resin composition

The present invention relates to a flame retardant thermoplastic resin composition that contains a phenol resin derivative having good char formability, regardless of the base resin. A flame retardant thermoplastic resin composition according to the present invention comprises (A) 100 parts by weight of a thermoplastic resin as a base resin, (B) about 0.1&#x2dc;100 parts by weight of a phenol resin derivative, and (C) about 0.1&#x2dc;50 parts by weight of a phosphoric acid ester morpholide compound or a mixture of phosphoric acid ester morpholide compounds. Another flame retardant thermoplastic resin composition according to the present invention comprises (A) 100 parts by weight of a thermoplastic resin as a base resin, (B) about 0.1&#x2dc;100 parts by weight of polyphenylene ether, (C) about 0.1&#x2dc;100 parts by weight of a phenol resin derivative, and (D) about 0.1&#x2dc;50 parts by weight of a phosphoric acid ester morpholide compound or a mixture of phosphoric acid ester morpholide compounds. The thermoplastic resin composition containing polyphenylene ether resin may also contain up to 5.0 parts by weight of an anti-dripping agent based on 100 parts by weight of the base resin.

The present invention relates to polyphosphate ester morpholides, compositions comprising mixtures thereof and thermoplastic resin compositions containing the polyphosphate ester morpholide composition as a flame retardant. The flame retardant compositions comprise mixtures of polyphosphate ester morpholides which are represented by the following general formula I:in which X is 1 or 2; Ris a C-Caryl group, an alkyl substituted C-Caryl group or a derivative thereof; Ris a C-Carylene group, an alkyl substituted C-Carylene group or a derivative thereof; n is the average number of morpholide repeating units, m is the average number of Rrepeating units, and n+m is 1 to 5. In accordance with the present invention, it is possible to provide a flame retardant thermoplastic resin compositions having improved flame retardancy even when small amounts of the flame retardant are used. The thermoplastic compositions according to the present invention also have a desirable balance of properties such as workability, impact strength, heat resistance, appearance and the like.

Thermoplastic resin compositions containing polyphosphate ester morpholides as flame retardants

Polyphosphate ester morpholides, mixtures thereof, and thermoplastic resin compositions containing polyphosphate ester morpholides as flame retardants

The present invention relates to a flame retardant thermoplastic resin composition that comprises a polycarbonate resin, a rubber modified styrene-grafted copolymer, a styrene-containing copolymer, a (meth)acrylic acid ester copolymer, a phosphoric acid ester as a flame retardant and a fluorinated polyolefin resin, which does not show coalescence of the domain resin that might be caused by the low viscosity at a high temperature, and poor flame retardancy, weld-line strength and mechanical properties such as impact strength, and which has a good balance of physical properties such as impact strength, heat resistance, heat stability, processability and appearance.

Flame retardant polycarbonate resin composition

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Seoul, South Korea

Kyung-Hoon Seo