Low modulus and autoclavable monolayer medical tubing

A - Human Necessities – 61 – L

Patent

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Details

A61L 29/00 (2006.01) A61L 29/04 (2006.01)

Patent

CA 2285268

A steam sterilizable monolayer medical tubing comprising a blend of a melt strength enhancing agent of a homopolymer or copolymer of polypropylene having a melt flow index of greater than 10 and in an amount of 1-10 % by weight and a second component selected from the group of (i) a selectively hydrogenated block copolymer of a vinyl aromatic hydrocarbon and a conjugated diene and (ii) a selectively hydrogenated block copolymer of a vinyl aromatic hydrocarbon and a conjugated diene to which has been grafted, an alpha, beta- olenfically unsaturated monocarboxylic or dicarboxylic acid reagent.

L'invention concerne un tube médical monocouche stérilisable à la vapeur comprenant un mélange d'un agent favorisant la résistance à la fusion d'un homopolymère ou copolymère de polypropylène ayant un indice de fluidité à chaud supérieur à 10 et ce à raison de 1-10 % en masse, et un second composant sélectionné dans le groupe comprenant (i) un copolymère séquencé hydrogéné sélectivement d'un hydrocarbure vinylique aromatique et un diène conjugué et (ii) un copolymère séquencé hydrogéné sélectivement d'un hydrocarbure vinylique aromatique et un diène conjugué sur lequel on a greffé un réactif acide monocarboxylique ou dicarboxylique insaturé alpha bêta oléfinique.

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