-olefin polymerization catalysts
Patent 5756611 Issued on May 26, 1998. Estimated Expiration Date: 
February 21, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
February 21, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesOlefin polymerization catalysts and methods of olefin polymerization Patent #: 5543377 InventorsAssigneeApplicationNo. 803003 filed on 02/21/1997US Classes:526/127, Contains non-transition free metal, hydride thereof, or carbon to non-transition metal atom bond502/104, Preparing catalyst or precursor502/111, Utilizing water or compound containing hydroxy bonded to carbon502/117, Component B metal is other than titanium or vanadium502/152, Organic compound including carbon-metal bond502/155, Including phosphorus or sulfur or compound containing nitrogen or phosphorus or sulfur502/200, Nitrogen compound containing502/202, Boron or compound containing same502/211, Molybdenum526/132, Contains non-transition elemental metal, hydride thereof, or carbon to non transition metal atom bond526/160, Transition metal bonded to carbon atom526/348.6, At least four carbon atoms526/352, From ethylene only526/943POLYMERIZATION WITH METALLOCENE CATALYSTSExaminersPrimary: Wu, David W.Attorney, Agent or FirmInternational ClassC08F 004/64AbstractA catalyst useful in the polymerization of -olefins comprises the reaction product of an alcohol having the general formula ##STR1## with an organometallic compound having the general formulaLM(X)v-1wherein Q is --COR12, --CR"R"(OR12) and --CR"R"N(R")2 ;wherein each R" is independently selected from H and R, R is a C1 to C12 alkyl group or a C6 to C24 aryl group, R12 is R or a radical of the formula --(CH2)w --O--(CH2)y H, w and y being independently selected from 1 to 4;L is a π-bonded ligand selected from (i.) a cyclopentadienyl or substituted cyclopentadienyl ring; (ii.) a boraaryl ring; (iii) a 1,2-azaborolinyl ring; or (iv.) a 5-membered heterocyclic ring;M is a Group 3 to 7 metal of the Periodic Table;v is the valence of M; andeach X is independently selected from halogen or a C1 -C6 alkyl group or a C6 -C24 aryl group.Field of SearchPreparing catalyst or precursorUtilizing water or compound containing hydroxy bonded to carbon Component B metal is other than titanium or vanadium Organic compound including carbon-metal bond Including phosphorus or sulfur or compound containing nitrogen or phosphorus or sulfur Nitrogen compound containing Boron or compound containing same Molybdenum Contains non-transition free metal, hydride thereof, or carbon to non-transition metal atom bond Contains non-transition elemental metal, hydride thereof, or carbon to non transition metal atom bond Transition metal bonded to carbon atom At least four carbon atoms From ethylene only POLYMERIZATION WITH METALLOCENE CATALYSTS |
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