MY121906A - Silica supported transition metal catalyst - Google Patents
Silica supported transition metal catalystInfo
- Publication number
- MY121906A MY121906A MYPI9301463A MY121906A MY 121906 A MY121906 A MY 121906A MY PI9301463 A MYPI9301463 A MY PI9301463A MY 121906 A MY121906 A MY 121906A
- Authority
- MY
- Malaysia
- Prior art keywords
- support material
- mixing
- time sufficient
- compound
- temperature
- Prior art date
Links
Abstract
A TRANSITION METAL CONTAINING CATALYST USEFUL FOR THE POLYMERIZATION OF ALPHA-OLEFINS IS PREPARED BY (A) FORMING IN AN INERT ATMOSPHERE WHICH EXCLUDES OXYGEN AND MOISTURE A SLURRY OF (1) A POROUS INORGANIC OXIDE SUPPORT MATERIAL SELECTED FROM THE GROUP CONSISTING OF SILICA, ALUMINA, OR A COMBINATION OF SILICA AND ALUMINA, SAID SUPPORT MATERIAL CONTAINING NOT GREATER THAN ABOUT 5 MILIMOLES OF HYDROXYL GROUPS PER GRAM OF SUPPORT MATERIAL AND PARTICLE SIZE NOT GREATER THAN ABOUT 10 MICRONS AND A SURFACE AREA OF FROM ABOUT 50 TO ABOUT 800 M2/G IN AN INERT ORGANIC LIQUID MEDIUM; (B) MIXING SAID SLURRY WITH (2) AN ALKOXIDE AND STIRRING THE RESULTANT MIXTURE AT A TEMPERATURE OF FROM ABOUT -20°C TO ABOUT FOR A TIME SUFFICIENT TO SATURATE THE SURFACE OF THE SUPPORT MATERIAL; (C) MIXING THE PRODUCT FORM (B) WITH (3) A TITANIUM COMPOUND OR A COMBINATION OF TITANIUM COMPOUND AND (4) A VANADIUM COMPOUND AND STIRRING THE RESULTANT MIXTURE AT A TEMPERATURE OF FROM ABOUT-20°C TO ABOUT 120°C FOR A TIME SUFFICIENT TO ALLOW COMPLETE REACTION OF THE TITANIUM COMPOUND AND THE VANADIUM COMPOUND AND THE VANADIUM COMPOUND WITH THE ORGANOMAGNESIUM MOIETIES REMAINING ON THE SOLID SUPPORT; (D) MIXING THE PRODUCT FROM (C) WITH AN INERT ORGANIC SOLUTION OF (5) A GROUP IIIA METAL ALKYL HALIDE AT A TEMPERATURE OF FROM ABOUT -20°C TO ABOUT 120°C FOR A TIME SUFFICIENT TO COMPLETE THE REDUCTION OF THE TITANIUM AND VANADIUM, IF PRESENT, COMPOUNDS TO THEIR FINAL OXIDATION STATE. ETHYLENE/ALPHA-OLEFIN COPOLYMERS WHICH HAVE GREATER THAN 17 PERCENT HIGH DENSITY FRACTION AND A MW/MN RATIO OF LESS THAN ABOUT 3.6 ARE SHOWN TO BE USEFUL IN MAKING CAST FILMS WHICH HAVE GOOD STRETCHABILITY AND GOOD PUNCTURE RESISTANCE. COPOLYMERS OF THE PRESENT INVENTION HAVING THE SPECIFIED PROPERTIES ARE ESPECIALLY USEFUL IN MAKING THE FILMS.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MYPI9301463 MY121906A (en) | 1993-07-26 | 1993-07-26 | Silica supported transition metal catalyst |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MYPI9301463 MY121906A (en) | 1993-07-26 | 1993-07-26 | Silica supported transition metal catalyst |
Publications (1)
Publication Number | Publication Date |
---|---|
MY121906A true MY121906A (en) | 2006-03-31 |
Family
ID=47257233
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MYPI9301463 MY121906A (en) | 1993-07-26 | 1993-07-26 | Silica supported transition metal catalyst |
Country Status (1)
Country | Link |
---|---|
MY (1) | MY121906A (en) |
-
1993
- 1993-07-26 MY MYPI9301463 patent/MY121906A/en unknown
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