专利名称：Thermoplastic moulding compositions
having a modified flowability, and their use
发明人：MUHLBACH, KLAUS, DR.,BRANDT,
HERMANN, DR.,RUPPMICH, KARL
申请号：EP89101500.0申请日：19890128公开号：EP0326979A3公开日：19901031
摘要：The moulding composition contains, in each case based on A + B + C, A) from 20to 85 % by weight of a thermoplastic, aromatic polycarbonate, B) from 5 to 50 % byweight of a graft polymer comprising b1) at least one elastomer (rubber) which makes upat least 40 % by weight, based on B, and has a mean particle size, determined as the d50value, of the cumulative weight distribution, in the range from 50 to 700 nm, the
elastomer b1) containing in copolymerised form, in each case based on b1), b1a1) from 50to 100 % by weight of at least one diene from the group comprising conjugated dieneshaving 4 or 5 carbon atoms, b1a2) from 0 to 50 % by weight of at least one monomerfrom the group comprising alkyl acrylates or alkyl methacrylates having 1 to 8 carbonatoms in the alkyl radical, or styrene or acrylonitrile, and b2) a first shell grafted onto theelastomer and making up from 1 to 40 % by weight, based on B, and b3) a further shellpolymerised onto the latter and making up 20 to 50 % by weight, based on B, C) from 5to 70 % by weight of a thermoplastic copolymer comprising, in each case based on C, c1)from 50 to 95 % by weight of styrene, alpha -methylstyrene, ring-substituted styreneand/or methyl methacrylate and c2) from 50 to 5 % by weight of (meth)acrylonitrile,
methyl methacrylate, maleic anhydride and/or N-substituted maleimide, and ischaracterised in that the first graft shell b2) is built up from, in each case based on b2),b2a1) from 45 to 99.99 % by weight of at least one alkyl acrylate or alkyl methacrylatehaving 1 to 8 carbon atoms in the alkyl radical, b2a2) from 0 to 50 % by weight of at leastone copolymerisable, olefinically unsaturated monomer and b2a3) from 0.01 to 5 % byweight of a copolymerisable, polyfunctional, crosslinking monomer, and furthermore thefurther graft shell b3) is built up from, in each case based on b3), b3a1) from 50 to 95 %by weight of styrene, alpha -methylstyrene, ring-substituted styrene and/or methylmethacrylate, and b3a2) from 50 to 5 % by weight of (meth)acrylonitrile, methylmethacrylate, maleic anhydride and/or N-substituted maleimide.
申请人：BASF AKTIENGESELLSCHAFT
地址：Carl-Bosch-Strasse 38 67063 Ludwigshafen DE
国籍：DE
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