| abstract |
The present invention relates to industrial polyolefin piping systems with improved rigidity and impact strength, including high operating temperature, single or multi-layer tubes, fittings, valves, and container tanks, which are substantially at a temperature of 230 ° C / 2.16 kg. consisting of g / 10 minutes of propylene homopolymer with a melt index, wherein the propylene homopolymer is b-nucleated and has an IRt of at least 0.98 with a stretching modulus of at least 1500 MPa, with a test specimen of at least 30 kJ / m 2 of charpy impact strength at + 23 ° C, 90 ° It has a Vicat B temperature greater than C and a temperature resistance of more than 100 ° C (thermal distortion temperature). The industrial polyolefin piping systems according to the invention can be used in chemical installations with improved stiffness and impact strength consisting of single or multi-layer pipes, fittings, valves and tanks operating at high temperature, preferably for transporting or transporting natural gas, hazardous liquids and / or toxic liquids. HE |