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公开(公告)号：US3592880A
公开(公告)日：1971-07-13
申请号：US3592880D
申请日：1967-12-27
Applicant: HOECHST AG
Inventor： DIEDRICH BERND , KREIL KARL DIETHER
CPC classification number: C08F10/00 , Y10S526/905 , C08F2/34
Abstract: POLYETHYLENE OR COPOLYMERS OF ETHYLENE AND HIGHER AOLEFINS HAVING A HIGH STRESS CRACKING RESISTANCE, ARE PREPARED BY A PROCESS WHICH COMPRISES TWO REACTION STEPS OF A SUSPENSION OR GASEOUS PHASE POLYMERIZATION, IN WHICH A MIXED CATALYST OF A TRIVALENT CHLORINE-CONTAINING TITANIUM COMPOUND AND AN ALUMINIUM TRIALKYL OR A REACTION PRODUCT OF ALUMINIUM TRIALKYLS OR ALKYHYDRIDES WITH DIOLEFINS IS USED, THE HYDROGEN CONTENT OF THE GAS ZONE BEING LOW IN ONE STEP AND HIGH IN THE OTHER STEP.
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