A METHOD OF CONTINUAL PRODUCTION OF BLOCK POLYMER OF PROPYLENE AND ETHYLENE

• Main Authors: CHIBA HIROMASA, OKA TAKAHIRO
• Format: Patent
• Language: English
• Published: 10.09.1997
• Edition: 6
• 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

This patent describes the continual procedure closed to the production of a propylene and ethylene block co-polymer with the well balanced features, something like the shock resistance, workability, and so on, while a good gain is reached, and two polymerisation stages together with catalyst are applied, to control the space arrangement of the result polymer containing a hard component with titan content and organic aluminium compound, while in the first stage, two or more polymerisation vessels are supplied by polypropylene and they are ordered sequentially, however 60 up to 95 weight percent of the total final product is created, in the second stage glycoether is added to reaction mixture produced in the first polymerisation stage and two or more polymerisation vessels are supplied with ethylene and the (ethylene + propylene) ratio is 0,1 up to 1,0; while 5 up to 40 weight percent closed to all of the polymerisation product quantity is created.