Abstract 1. PROCESS FOR THE PREPARATION OF CATALYST FOR THE POLYMERIZATION OF ETHYLENE AND FOR THE COPOLYMERIZATION OF ETHYLENE AND AN ALPHA-OLEFIN, SAID CATALYST CONSISTING ESSENTIALLY OF AN ORGANOMETALLIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF AN ALUMINUM TRIALKYL A ZINC DIALKYL AND A DIALKYL HALIDE OF ALUMINUM WHEREIN EACH ALKYL GROUP CONTAINS 1 TO 4 CARBON ATOMS, AND THE PRODUCT OF INTER-REACTION OF A HALOGENATED DERIVATIVE OF A TRANSITION METAL SELECTED FROM THE GROUP CONSISTING OF CHLORIDES, BROMIDES AND OXYHALIDES OF METALS OF GROUPS IVB AND VB OF THE PERIODIC SYSTEM, IN THE LIQUID STATE AND A SOLID GRANULAR SUPPORT CHARACTERIZED BY IMPREGNATING AT A TEMPERAURE BETWEEN 50 AND 160*C., FOR A TIME NOT LESS THAN 30MINUTES WITH THE LIQUID HALOGENATED DERIVATIVE OF THE TRANSITION METAL THE GRANULAR SUPPORT TO FORM A SUPPORT WHEREIN SAID HALOGENATED COMPOUND FORMS 5 TO 25 PERCENT BY WEIGHT OF THE SUPPORT OBTAINED BY SUBJECTING TO AN ACTIVATION TREATMENT A MAGNESIUM SALT OF AN ORGANIC ACID SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM OXALATE, FORMATE, LACTATE, TARTRATE, ACETATE, BENZOATE AND CITRATE CONTAINING UP TO 5 MOLECULES OF WATER OF CRYSTALLIZATION, OR A DOUBLE ALKALI METAL AND MAGNESIUM SALT OF SAID ORGANIC ACID CONTAINING UP TO 8 MOLECULES OF WATER OF CRYSTALLIZATION, THE ACTIVATION TREATMENT CONSISTING ESSENTIALLY OF HEATING THE MAGNESIUM SALT OR THE DOUBLE ALKALI METAL AND MAGNESIUM SALT IN A CURRENT OF INERT GAS WHICH IS ANHYDROUS OR HAS A HUMIDITY NOT GREATER THAN 10 PERCENT BY WEIGHT OF SATURATION, HEATING TAKING PLACE GRADUALLY TO A TEMPERATURE AT LEAST 20-30* C., BELOW THE DECOMPOSITION POINT OF THE SALT AND MAINTAINING THE SALT AT TIS TEMPERATURE FOR 5 TO 50 HOURS, SAID INTER-REACTION PRODUCT OF THE HALOGENATED DERIVATIVE OF THE TRANSITION METAL AND THE SOLID SUPPORT BEING CONTACTED WITH THE ORGANOMETALLIC COMPOUND IN A RELATIVE AMOUNT SUCH THAT THE MOLAR RATIO OF THE ORGANOMETALLIC COMPOUND TO THE TRANSITION METAL FIXED ON THE SUPPORT IS 20 TO 150.
Inventors
👤 F Ligorati
👤 M Galliverti
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-30 13:14
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
321 words
PROCESS FOR THE PREPARATION OF CATALYST FOR THE POLYMERIZATION OF ETHYLENE AND FOR THE COPOLYMERIZATION OF ETHYLENE AND AN ALPHA-OLEFIN, SAID CATALYST CONSISTING ESSENTIALLY OF AN ORGANOMETALLIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF AN ALUMINUM TRIALKYL A ZINC DIALKYL AND A DIALKYL HALIDE OF ALUMINUM WHEREIN EACH ALKYL GROUP CONTAINS 1 TO 4 CARBON ATOMS, AND THE PRODUCT OF INTER-REACTION OF A HALOGENATED DERIVATIVE OF A TRANSITION METAL SELECTED FROM THE GROUP CONSISTING OF CHLORIDES, BROMIDES AND OXYHALIDES OF METALS OF GROUPS IVB AND VB OF THE PERIODIC SYSTEM, IN THE LIQUID STATE AND A SOLID GRANULAR SUPPORT CHARACTERIZED BY IMPREGNATING AT A TEMPERAURE BETWEEN 50 AND 160*C., FOR A TIME NOT LESS THAN 30MINUTES WITH THE LIQUID HALOGENATED DERIVATIVE OF THE TRANSITION METAL THE GRANULAR SUPPORT TO FORM A SUPPORT WHEREIN SAID HALOGENATED COMPOUND FORMS 5 TO 25 PERCENT BY WEIGHT OF THE SUPPORT OBTAINED BY SUBJECTING TO AN ACTIVATION TREATMENT A MAGNESIUM SALT OF AN ORGANIC ACID SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM OXALATE, FORMATE, LACTATE, TARTRATE, ACETATE, BENZOATE AND CITRATE CONTAINING UP TO 5 MOLECULES OF WATER OF CRYSTALLIZATION, OR A DOUBLE ALKALI METAL AND MAGNESIUM SALT OF SAID ORGANIC ACID CONTAINING UP TO 8 MOLECULES OF WATER OF CRYSTALLIZATION, THE ACTIVATION TREATMENT CONSISTING ESSENTIALLY OF HEATING THE MAGNESIUM SALT OR THE DOUBLE ALKALI METAL AND MAGNESIUM SALT IN A CURRENT OF INERT GAS WHICH IS ANHYDROUS OR HAS A HUMIDITY NOT GREATER THAN 10 PERCENT BY WEIGHT OF SATURATION, HEATING TAKING PLACE GRADUALLY TO A TEMPERATURE AT LEAST 20-30* C., BELOW THE DECOMPOSITION POINT OF THE SALT AND MAINTAINING THE SALT AT TIS TEMPERATURE FOR 5 TO 50 HOURS, SAID INTER-REACTION PRODUCT OF THE HALOGENATED DERIVATIVE OF THE TRANSITION METAL AND THE SOLID SUPPORT BEING CONTACTED WITH THE ORGANOMETALLIC COMPOUND IN A RELATIVE AMOUNT SUCH THAT THE MOLAR RATIO OF THE ORGANOMETALLIC COMPOUND TO THE TRANSITION METAL FIXED ON THE SUPPORT IS 20 TO 150.
Claim 2
Dependent Claim
321 words
PROCESS FOR THE PREPARATION OF CATALYST FOR THE POLYMERIZATION OF ETHYLENE AND FOR THE COPOLYMERIZATION OF ETHYLENE AND AN ALPHA-OLEFIN, SAID CATALYST CONSISTING ESSENTIALLY OF AN ORGANOMETALLIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF AN ALUMINUM TRIALKYL A ZINC DIALKYL AND A DIALKYL HALIDE OF ALUMINUM WHEREIN EACH ALKYL GROUP CONTAINS 1 TO 4 CARBON ATOMS, AND THE PRODUCT OF INTER-REACTION OF A HALOGENATED DERIVATIVE OF A TRANSITION METAL SELECTED FROM THE GROUP CONSISTING OF CHLORIDES, BROMIDES AND OXYHALIDES OF METALS OF GROUPS IVB AND VB OF THE PERIODIC SYSTEM, IN THE LIQUID STATE AND A SOLID GRANULAR SUPPORT CHARACTERIZED BY IMPREGNATING AT A TEMPERAURE BETWEEN 50 AND 160*C., FOR A TIME NOT LESS THAN 30MINUTES WITH THE LIQUID HALOGENATED DERIVATIVE OF THE TRANSITION METAL THE GRANULAR SUPPORT TO FORM A SUPPORT WHEREIN SAID HALOGENATED COMPOUND FORMS 5 TO 25 PERCENT BY WEIGHT OF THE SUPPORT OBTAINED BY SUBJECTING TO AN ACTIVATION TREATMENT A MAGNESIUM SALT OF AN ORGANIC ACID SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM OXALATE, FORMATE, LACTATE, TARTRATE, ACETATE, BENZOATE AND CITRATE CONTAINING UP TO 5 MOLECULES OF WATER OF CRYSTALLIZATION, OR A DOUBLE ALKALI METAL AND MAGNESIUM SALT OF SAID ORGANIC ACID CONTAINING UP TO 8 MOLECULES OF WATER OF CRYSTALLIZATION, THE ACTIVATION TREATMENT CONSISTING ESSENTIALLY OF HEATING THE MAGNESIUM SALT OR THE DOUBLE ALKALI METAL AND MAGNESIUM SALT IN A CURRENT OF INERT GAS WHICH IS ANHYDROUS OR HAS A HUMIDITY NOT GREATER THAN 10 PERCENT BY WEIGHT OF SATURATION, HEATING TAKING PLACE GRADUALLY TO A TEMPERATURE AT LEAST 20-30* C., BELOW THE DECOMPOSITION POINT OF THE SALT AND MAINTAINING THE SALT AT TIS TEMPERATURE FOR 5 TO 50 HOURS, SAID INTER-REACTION PRODUCT OF THE HALOGENATED DERIVATIVE OF THE TRANSITION METAL AND THE SOLID SUPPORT BEING CONTACTED WITH THE ORGANOMETALLIC COMPOUND IN A RELATIVE AMOUNT SUCH THAT THE MOLAR RATIO OF THE ORGANOMETALLIC COMPOUND TO THE TRANSITION METAL FIXED ON THE SUPPORT IS 20 TO 150.