composição de polipropileno com alta resistência ao endurecimento e ao impacto

• Main Authors: Bo Malm, Juliane Braun, Markus Gahleitner, Klaus Bernreitner
• Format: Patent
• Language: Portuguese
• Published: 24.09.2019
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS

The present invention is directed to a polypropylene composition comprising - a propylene homo- or copolymer (A) with a polydispersity index (PI), determined according ISO 6721-1, of at least 5.8 Pa -1 ; and - an inorganic filler (B) in an amount from 2.0 to 20 parts per weight based on 100 parts per weight of (A) + (B); The present invention is furthermore directed to a polypropylene composition comprising - a propylene homo- or copolymer (A); and - an inorganic filler (B); whereby the following relation is fulfilled 80 ¢ F + 1700 ¢ MPa ‰¤ T wherein F are the parts per weight of component (B) based on 100 parts per weight of the total amount of (A) + (B). T is the tensile modulus in MPa, determined according to ISO 527-2, of the polypropylene composition measured on a test specimen prepared by injection molding according to ISO 1873-2. The present invention is also directed to a process for the production of the polypropylene compositions according to the invention and to an article made of the polypropylene compositions according to the invention. The present invention is furthermore directed to the use of the polypropylene compositions according to the invention for the production of pipes, car components, appliance housings, transport containers.