Abstract: The invention relates to a stretched plastic tube obtainable from a polymer composition comprising a copolyester elastomer, and comprising two end-parts and an elongated part between the end-parts wherein at least one end-part is a stretched end-part obtained by mechanically stretching of at least a section of that end part, characterized in that the stretched end-part comprises an outer surface layer area consisting of a first thermoplastic polymer composition (A) comprising a first copolyester elastomer (A-1) and 0-0.2 wt. % carbon black relative to the total weight of the thermoplastic polymer composition (A). The invention also relates to a Plastic tube obtainable from a polymer composition comprising a copolyester elastomer, wherein the plastic tube is a plastic tube comprising: (i) an outer surface layer consisting of a first thermoplastic polymer composition (A) comprising a first copolyester elastomer (A-1) and 0-0.2 wt.

Abstract: The invention relates to Polymer composition comprising at least 50 wt. % of a copolyester elastomer and at least 0.7 wt. % of a grease, an oil and/or a wax component, relative to the total weight of the polymer composition. The invention also relates to a plastic tube comprising at least an outer surface layer consisting of said polymer composition, and an automotive brake system, comprising a stretched plastic tube comprising the said plastic tube and a hose fitting inserted into an end-part of the said plastic tube.

Abstract: The invention relates to a process for the preparation of a thermoplastic consisting of a vinylaromatic compound, acrylonitril and a butadiene rubber, by means of a two-step polymerization reaction characterized in that 0.1-10 wt. % of the butadiene rubber based on the entire composition, is replaced by an acrylate rubber in the second step. The process results in a decreased concentration of residual monomers.