Process for the polymerization of olefins
Abstract
Abstract OLEFINES ARE POLYMERIZED IN THE PRESENCE OF HYDROGEN AS A MOLCULAR WEIGHT CONTROL AGENT WITH A ZIEGLER-TYPE CATALYST COMPOSITION COMPRISING A MIXTURE OF A COMPOUND OF VANADIUM AND A REDUCING AGENT WHICH IS AN ORGANOALUMINUM COMPOUND AND AN ALKALYALUMINUM ALKOXIDE, SAID COMPOSITION BEING PREPARED BY COMBINING SAID COMPONENTS IN SUCH ORDER THAT SAID ALUMINUM ALKOXIDE IS PRESENT PRIOR TO COMBINATION OF SAID VANADIUM COMPOUND WITH SAID ORGANOALUMINUM COMPOUND. THE CATALYST SO PREPARED ENHANCES THE ABILITY OF HYDROGEN TO ACT AS A CHAIN-TRANSFER AGENT IN CONTROLLING MOLECULAR WEIGHT, THAT IS, LOWER MOLECULAR WEIGHT POLYMERS CAN BE PRODUCED AT A GIVEN HYDROGEN CONCENTRATION OR LESSER AMOUNTS OF HYDROGEN ARE REQUIRED TO PRODUCE POLYMMER PRODUCTS HAVING SPECIFIED MOLECULAR WEIGHTS.
Inventors
- 👤 M Ort
Bibliographic Details
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