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Application filed by Samsung Electronics Co LtdfiledCriticalSamsung Electronics Co Ltd
Publication of MY113260ApublicationCriticalpatent/MY113260A/en
Transition And Organic Metals Composition Catalysts For Addition Polymerization
(AREA)
Abstract
THE PRESENT INVENTION RELATES TO A PROCESS FOR PREPARATION OF A CATALYST OF ZIEGLER-NATTA TYPE COMPRISING A REFRACTORY OXIDE SUPPORT. THE PROCESS COMPRISES THE FOLLOWING STAGES: (A) AND (B) CONTACTING THE SUPPORT IN THE COURSE OF TWO SEPARATE STAGES WITH A DIALKYLMAGNESIUM AND WITH AN ORGANOALURNINIUM COMPOUND IN ANY ORDER, ( C) CONTACTING THE PRODUCT RESULTING FROM (A) AND (B) WITH AN ORGANIC HALOGEN COMPOUND, AND ( D) CONTACTING THE SOLID RESULTING FROM (C) WITH AT LEAST ONE TETRAVALENT TITANIUM COMPOUND. THE INVENTION ALSO RELATES TO AN OLEFIN POLYMERIZATION PROCESS USING THE CATALYST. THE RESULTING POLYMERS HAVE AN IMPROVED BULK DENSITY. FIGURE 1
MYPI91001802A1990-10-311991-09-30Circuit for inserting and separating frequency folding information and method for generating thereof
MY113260A
(en)
Process for the condensation of at least one epoxide with at least one cyclic anhydride in the presence of a catalyst based on at least one nitrogen containing titanium complex