| abstract |
AN APPARATUS AND METHOD FOR INTERRUPTING THE POLYMERIZATION OF ETHYLENE, PROPYLENE, OR 1-BUTENE HAVING A POLYMERIZATION CATALYST COMPRISING A MIXTURE OF AN ALUMINUM-ORGANIC COMPOUND WITH A SALT, FRESHLY PRECIPITATED OXIDE OR HYDROXIDE OF METALS OF GROUPS IV-B, V-B OR VI-B OF THE PERIODIC SYSTEM, INCLUDING THORIUM AND URANIUM WHICH COMPRISES ADDING TO A SUSPENSION OF THE OLEFIN AND CATALYST ABOUT 15 TO 100 MOLE PERCENT OF A DEACTIVATOR COMPRISING AN ORGANIC COMPOUND WHICH CONTAINS OXYGEN, AN ORGANIC COMPOUND WHICH CONTAINS OXYGEN AND HYDROGEN, A ORGANIC COMPOUND WHICH CONTAINS HYDROGEN, HYDROGEN HALIDE OR WATER, RELATIVE TO THE ALKYL GROUP AND/OR HYDRIDE GROUP BONDED TO THE ALUMINUM OF THE ALUMINUM-ORGANIC COMPOUND. |