| abstract |
Provided is a tube having good transparency, flexibility, solvent adhesion, and having excellent clamp resistance, anti-sticking resistance, and kink resistance, and a medical tool using the tube. The present invention relates to a tube formed by molding a resin composition containing a styrene thermoplastic elastomer (a) and a polypropylene resin (b) and not containing a softener, wherein the elastomer (a) is a polymer block composed of an aromatic vinyl compound ( A block copolymer composed of polymer block (B) consisting of A) and isoprene and / or 1,3-butadiene is hydrogenated, and the content of polymer block (A) is 5 to 40% by mass before hydrogenation, The hydrogenation rate of a polymer block (B) is 70% or more, and the content of the 1, 2- bond and 3, 4- bond of a polymer block (B) is 30-85 mol%, and it is a polypropylene resin (b). The mass ratio [(a) / (b)] of the styrene-based thermoplastic elastomer (a) is 90/10 to 40/60, and the diffraction peak intensity [I (15)] at a scattering angle of 15 ° in X-ray diffraction. Diffraction peak intensity [I (14)] The ratio [I (14) / I (15)] is a medical device formed using the 1.4 or more tubes, and a tube. |