Medizintechnisches Formteil, insbesondere Bauteil für ein Übertragungssystem für Infusions- oder Transfusionszwecke

摘要

A medical moulded part, in particular a component of a transmission system for perfusion or transfusion purposes, is made of a mixture that contains (P1) 0.1 to 100 % by weight of a rubber-elastic block copolymer made of at least one block S that forms a hard phase and contains polymerised units of a vinyl aromatic monomer and of at least one block B/S that forms a soft phase and contains polymerised units of both a vinyl aromatic monomer (S) and a diene (B). The glass transition temperature Tg of block S is higher than 25 DEG C and that of block B/S is lower than 25 DEG C. The phase volume ratio between block S and block B/S is selected so that the hard phase represents 1 to 40 % by volume of the whole block copolymer and the diene less than 50 % by weight of the whole block copolymer. The mixture also contains (P2) 0 to 99.9 % by weight of a thermoplastic and/or duroplastic polymer; and (P3) 0 to 70 % by weight other additives and auxiliary substances. The sum of the percentages by weight of components P1 to P3 equals 100 %.