申请人：Cheil Industries Inc.
公开号：EP0970997A2
公开（公告）日：2000-01-12
Flame retardant, thermoplastic molding composition which comprises
(A) 40 to 99 parts by weight of a halogen free, thermoplastic polycarbonate;
(B) 1 to 50 parts by weight of a graft polymer prepared by graft polymerizing
(B-1) 5 to 95 parts by weight of a mixture of
(B-1.1) 50 to 95 parts by weight of styrene, α-methylstyrene, halogen or methyl ring-substituted styrene, C1-C8 alkyl methacrylate, C1-C8 alkyl acrylate, or a mixture thereof and
(B-1.2) 5 to 50 parts by weight of acrylonitrile, methacrylonitrile, C1-C8 alkyl methacrylates, C1-C8 alkyl acrylate, maleic anhydride, C1-C4 alkyl or phenyl N-substituted maleimides or a mixture thereof onto
(B-2) 5 to 95 parts by weight of a polymer with a glass transition temperature of below -10 °C and selected from a group consisting of butadiene rubbers, acryl rubbers, ethylene/propylene rubbers, styrene/butadiene rubbers, acrylonitrile/butadiene rubbers, isoprene rubbers, EPDM rubbers, polyorganosiloxane derivatives, and mixture thereof;
(C) 0 to 50 parts by weight of a vinyl copolymer or mixture thereof prepared from
(C-1) 50 to 95 parts by weight of styrene, α-methylstyrene, ring-substituted styrenes, C1-C8 alkyl methacrylates, C1-C8 alkyl acrylates or a mixture thereof and
(C-2) 50 to 5 parts by weight of acrylonitrile, methacrylonitrile, C1-C8 alkyl methacrylates, C1-C8 alkyl acrylates, maleic anhydride, N-substituted maleimides and a mixture thereof;
(D) 0.5 to 20 parts by weight, based on 100 parts by weight of (A)+(B)+(C), of a mixture of phosphate esters comprising
(D-1) more than or equal to 10 % by weight and less than 50 % by weight of a mixture of polyphosphates wherein each component is represented by the general formula (I)
wherein
R1, R2, R4, and R5 independently of one another are C6-C20 aryl or alkyl substituted C6-C20 aryl, R3 is a residue derived from bisphenol A, and M is an integer equal to or greater than 1, and
(D-2) more than or equal to 50 % by weight and less than or equal to 90% by weight of a monophosphate represented by the general formula (II) or a mixture of monophosphates wherein each component is represented by the general formula (II)
wherein
R is alkyl group such as t-butyl, isopropyl, isobutyl, isoamyl, t-amyl and N is 0 or an integer from 1 to 3; and
(E) further flame retardants comprising 0.05 to 5.0 part by weight, based on 100 parts by weight of the basic resin (A)+(B)+(C), of a fluorinated polyolefin and/or 0.01 - 1 parts by weight of the base resin (A)+(B)+(C) of a salt having flame retarding properties for aromatic polycarbonates.
阻燃热塑性模塑组合物，其中包括
(A) 40 至 99 重量份的无卤素热塑性聚碳酸酯；
(B) 1 至 50 份（按重量计）通过接枝聚合制备的接枝聚合物
(B-1) 5 至 95 份（按重量计）下列物质的混合物
(B-1.1) 50 至 95 份(重量)苯乙烯、α-甲基苯乙烯、卤素或甲基环取代的苯乙烯、 C1-C8 烷基甲基丙烯酸酯、C1-C8 烷基丙烯酸酯或其混合物，以及
(B-1.2) 5 至 50 重量份的丙烯腈、甲基丙烯腈、C1-C8 烷基甲基丙烯酸酯、C1-C8 烷基丙烯酸酯、马来酸酐、C1-C4 烷基或苯基 N-取代马来酰亚胺或其混合物。
(B-2) 5 至 95 重量份的玻璃化转变温度低于-10℃的聚合物，选自丁二烯橡 胶、丙烯橡胶、乙烯/丙烯橡胶、苯乙烯/丁二烯橡胶、丙烯腈/丁二烯橡胶、 异戊二烯橡胶、三元乙丙橡胶、聚有机硅氧烷衍生物及其混合物；
(C) 0 至 50 重量份的乙烯基共聚物或其混合物，其制备方法如下
(C-1) 50 至 95 重量份的苯乙烯、α-甲基苯乙烯、环取代苯乙烯、C1-C8 烷基甲基丙烯酸酯、C1-C8 烷基丙烯酸酯或其混合物，以及
(C-2) 50 至 5 重量份的丙烯腈、甲基丙烯腈、C1-C8 烷基甲基丙烯酸酯、C1-C8 烷基丙烯酸酯、马来酸酐、N-取代马来酰亚胺及其混合物；
(D) 以 100 重量份的(A)+(B)+(C)为基准，0.5 至 20 重量份的磷酸酯混合物，其 中包括
(D-1) 按重量计大于或等于 10%但小于 50%的多磷酸盐混合物，其中各组分由通式 (I) 表示
其中
R1、R2、R4 和 R5 相互独立地为 C6-C20 芳基或烷基取代的 C6-C20 芳基，R3 为衍生自双酚 A 的残基，M 为等于或大于 1 的整数，以及
(D-2) 按重量计大于或等于 50%、小于或等于 90%的由通式(II)表示的单磷酸盐或单磷酸盐混合物，其中各组分由通式(II)表示
其中
R 为烷基，如叔丁基、异丙基、异丁基、异戊基、叔戊基，N 为 0 或 1 至 3 的整数；及
(E) 进一步的阻燃剂，按 100 份基础树脂(A)+(B)+(C)的重量计，包括 0.05 至 5.0 份氟化聚烯烃和/或按基础树脂(A)+(B)+(C)的重量计，包括 0.01 至 1 份对芳香族聚碳酸酯具有阻燃性能的盐。
