The invention relates to a compounding method for producing impact-modified polycarbonate compositions using components acting as an alkali or using alkaline constituent-containing components. By using the method according to the invention, the harmful influence of the components acting as an alkali on the properties of polycarbonate molding compositions or the surface of molded bodies produced therefrom is counteracted. The method has the steps (i), (ii), and optionally (iii), wherein (i) in a first step A) 10 to 98 wt. % of at least one polymer selected from the group of aromatic polycarbonates and aromatic polyester carbonates, B) 0.001 to 0.3 wt. % of at least one organic Brønsted acid, i.e. a carbon and hydrogen-containing Brønsted acid, C) 0.0001 to 0.008 wt. % of at least one inorganic Brønsted acidic phosphorus compound, i.e. a Brønsted acidic phosphorus compound which does not contain carbon, D) 1 to 90 wt. % of at least one rubber-containing vinyl(co)polymerisate, E) 0 to 90 wt. % of at least one polyester, and F) 0 to 30 wt. % of at least one additive, the ratio of the weight percentages of the components B to C used in method step (i) ranging from 2 to 100, are heated by supplying thermal and/or mechanical energy, whereby at least the components A) and D) are melted and all of the components used are mixed together, dissolved into one another, or dispersed into one another, and in an additional step (ii), the melt (ii) resulting from method step (i) is resolidified by cooling and (iii) optionally granulated. The method steps (ii) and (iii) can be carried out in any order. The invention also relates to compositions produced according to the method, to the use thereof for producing molded bodies, to the molded bodies themselves, and to the use of the mixtures of B and C for stabilizing impact-modified polycarbonate compositions.
本发明涉及一种使用起碱作用的组分或使用含碱性成分的组分生产抗冲改性聚
碳酸酯组合物的复合方法。通过使用本发明的方法,可以抵消作为碱的成分对聚
碳酸酯模塑组合物的性能或由此生产的模塑体表面的有害影响。该方法包括步骤(i)、(ii)和可选的步骤(iii),其中(i) 在第一步中,A) 10 至 98 wt.重量百分比的至少一种有机布氏酸,即含碳和氢的布氏酸, C) 0.0001 至 0.008 重量百分比的至少一种无机布氏酸性
磷化合物,即不含碳的布氏酸性
磷化合物, D)1 至 90 重量百分比的至少一种含橡胶的
乙烯基(共)聚合酸酯, E) 0 至 90 重量百分比的至少一种聚酯,以及 F) 0 至 30 重量百分比的至少一种添加剂。方法步骤(i)中使用的成分 B 与 C 的重量百分比之比范围为 2 至 100,通过提供热能和/或机械能进行加热,从而至少熔化成分 A) 和 D),并将所有使用的成分混合在一起、相互溶解或相互分散,在附加步骤(ii)中,通过冷却将方法步骤(i)产生的熔体(ii)分解,并(iii)选择性地造粒。方法步骤(ii)和(iii)可以任意顺序进行。本发明还涉及根据该方法生产的组合物、用于生产模塑体的组合物、模塑体本身以及用于稳定抗冲改性聚
碳酸酯组合物的 B 和 C 混合物。