POLYCARBONATE RESIN COMPOSITION, METHOD FOR PRODUCING SAME AND MOLDED ARTICLE OF THIS RESIN COMPOSITION
Disclosed is a polycarbonate resin composition superior in surface hardness, heat resistance, moldability and flame resistance. The polycarbonate resin composition contains at least a polycarbonate resin (a), a polycarbonate resin (b), having structural units that differ from this polycarbonate resi...
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Format | Patent |
Language | English French Japanese |
Published |
13.10.2011
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Abstract | Disclosed is a polycarbonate resin composition superior in surface hardness, heat resistance, moldability and flame resistance. The polycarbonate resin composition contains at least a polycarbonate resin (a), a polycarbonate resin (b), having structural units that differ from this polycarbonate resin (a), and satisfies the following conditions. (i) The pencil hardness, as specified by ISO 15184, of the polycarbonate resin (a) is higher than the pencil hardness, as specified by ISO 15184, of the polycarbonate resin (b). (ii) The glass-transition point Tg (a) for the polycarbonate resin (a) and the glass transition point Tg (b) for the polycarbonate resin (b) satisfies the relation in (formula 1). Tg (b) - 45°C < Tg (a) < Tg (b) - 10°C ... (formula 1) (iii) The pencil hardness, as specified by ISO 15184, of the polycarbonate resin composition is two ranks or more higher than the pencil hardness, as specified by ISO 15184, of the polycarbonate resin (b).
L'invention porte sur une composition de résines de polycarbonate qui est supérieure en dureté de surface, résistance à la chaleur, aptitude au moulage et résistance à la flamme. La composition de résines de polycarbonate contient au moins une résine de polycarbonate (a), une résine de polycarbonate (b) ayant des unités structurales qui diffèrent de cette résine de polycarbonate (a), et satisfait les conditions suivantes. (i) La dureté au crayon, telle que spécifiée par ISO 15184, de la résine de polycarbonate (a) est supérieure à la dureté au crayon, telle que spécifiée par ISO 15184, de la résine de polycarbonate (b). (ii) Le point de transition vitreuse Tg (a) pour la résine de polycarbonate (a) et le point de transition vitreuse Tg (b) pour la résine de polycarbonate (b) satisfait la relation dans (formule 1). Tg (b) - 45°C < Tg (a) < Tg (b) - 10°C ... (formule 1). (iii) La dureté au crayon, telle que spécifiée par ISO 15184, de la composition de résines de polycarbonate est d'au moins deux rangs supérieure à la dureté au crayon, telle que spécifiée par ISO 15184, de la résine de polycarbonate (b). |
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AbstractList | Disclosed is a polycarbonate resin composition superior in surface hardness, heat resistance, moldability and flame resistance. The polycarbonate resin composition contains at least a polycarbonate resin (a), a polycarbonate resin (b), having structural units that differ from this polycarbonate resin (a), and satisfies the following conditions. (i) The pencil hardness, as specified by ISO 15184, of the polycarbonate resin (a) is higher than the pencil hardness, as specified by ISO 15184, of the polycarbonate resin (b). (ii) The glass-transition point Tg (a) for the polycarbonate resin (a) and the glass transition point Tg (b) for the polycarbonate resin (b) satisfies the relation in (formula 1). Tg (b) - 45°C < Tg (a) < Tg (b) - 10°C ... (formula 1) (iii) The pencil hardness, as specified by ISO 15184, of the polycarbonate resin composition is two ranks or more higher than the pencil hardness, as specified by ISO 15184, of the polycarbonate resin (b).
L'invention porte sur une composition de résines de polycarbonate qui est supérieure en dureté de surface, résistance à la chaleur, aptitude au moulage et résistance à la flamme. La composition de résines de polycarbonate contient au moins une résine de polycarbonate (a), une résine de polycarbonate (b) ayant des unités structurales qui diffèrent de cette résine de polycarbonate (a), et satisfait les conditions suivantes. (i) La dureté au crayon, telle que spécifiée par ISO 15184, de la résine de polycarbonate (a) est supérieure à la dureté au crayon, telle que spécifiée par ISO 15184, de la résine de polycarbonate (b). (ii) Le point de transition vitreuse Tg (a) pour la résine de polycarbonate (a) et le point de transition vitreuse Tg (b) pour la résine de polycarbonate (b) satisfait la relation dans (formule 1). Tg (b) - 45°C < Tg (a) < Tg (b) - 10°C ... (formule 1). (iii) La dureté au crayon, telle que spécifiée par ISO 15184, de la composition de résines de polycarbonate est d'au moins deux rangs supérieure à la dureté au crayon, telle que spécifiée par ISO 15184, de la résine de polycarbonate (b). |
Author | HITOMI, TATSUYA YOKOYAMA, TOMONARI NAKATA, MICHIO TAKAHASHI, KAZUYUKI UCHIMURA, RYUUJI TSURUHARA, KENJI NISHIHARA, RYOUHEI YAMAMOTO, MASANORI NOBUYASU, TETSUROU |
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DocumentTitleAlternate | COMPOSITION DE RÉSINES DE POLYCARBONATE, SON PROCÉDÉ DE FABRICATION ET ARTICLE MOULÉ À BASE DE CETTE COMPOSITION DE RÉSINES |
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RelatedCompanies | HITOMI, TATSUYA YOKOYAMA, TOMONARI NAKATA, MICHIO TAKAHASHI, KAZUYUKI UCHIMURA, RYUUJI TSURUHARA, KENJI MITSUBISHI CHEMICAL CORPORATION NISHIHARA, RYOUHEI YAMAMOTO, MASANORI NOBUYASU, TETSUROU |
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SubjectTerms | AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL |
Title | POLYCARBONATE RESIN COMPOSITION, METHOD FOR PRODUCING SAME AND MOLDED ARTICLE OF THIS RESIN COMPOSITION |
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