ABS ABS COMPOSITIONS HAVING AN IMPROVED SURFACE FOLLOWING STORAGE IN A WARM-HUMID ENVIRONMENT

摘要

The present invention provides A) 0 to 98 parts by weight based on the sum of A and B, a mixture of several thermoplastic polymers different from B or one of them, B) 2 to 100 parts by weight of B1) emulsification based on the sum of A and B At least one graft polymer prepared by the polymerization process, B2) optionally at least one graft polymer prepared by the bulk polymerization, suspension polymerization or solution polymerization process, B3) optionally at least one rubber-free A polymer composition containing a containing vinyl (co) polymer and C) 0 to 30 parts by weight of at least one conventional polymer additive, wherein the sum of the parts by weight of A and B is 100. The present invention provides a composition comprising (i) at least one composition comprising a cation selected from the group consisting of alkali metals, alkaline earth metals and aluminum and anions selected from the group consisting of chloride, sulfates, nitrates, phosphates, acetates and formates Inorganic salts at a concentration of 100 to 5000 mg / kg based on the composition, and (ii) the salts in the composition are provided in fully dissolved form or in the form of amorphous or crystalline inclusions having a size of less than 60 μm. It is characterized by. The disclosed polymer compositions are characterized by an improved surface even after being stored in a warm and humid environment, and optionally after partial or complete application to further surface treatment steps such as painting, film insert molding, vacuum metallization or electroplating. It is particularly suitable for the production of molded articles or molded articles having class A surface requirements and high-gloss finishes.