Mono-Indenyl Transition Metal Compounds and Polymerization Therewith
申请人:Voskoboynikov Alexander Z.
公开号:US20110213109A1
公开(公告)日:2011-09-01
This invention relates to transition metal compounds, catalyst systems comprising said compounds and polymerization processes using such catalyst systems, where the transition metal compound is represented by the formula:
This invention also relates to process to produce such compounds.
Halogen substituted metallocene compounds for olefin polymerization
申请人:Voskoboynikov Z. Alexander
公开号:US20060160967A1
公开(公告)日:2006-07-20
A metallocene compound comprising a transition metal, a first substituted or unsubstituted indenyl or fluorenyl ligand pi-bonded to the transition metal, a second monoanionic ligand bonded to the transition metal, and a divalent bridging group bonded to the indenyl ligand and said second monoanionic ligand, wherein said bridging group is connected to the four, five, six or seven position of the indenyl ligand or to the one, two, three, four, five, six, seven or eight position of the fluorenyl ligand, and wherein at least one of one of the first and second ligands comprises at least one halogen substituent directly bonded to any sp
2
carbon atom at a bondable ring position of the ligand.
SPHINGOSINE 1 PHOSPHATE RECEPTOR MODULATORS AND METHODS OF CHIRAL SYNTHESIS
申请人:MARTINBOROUGH Esther
公开号:US20110178056A1
公开(公告)日:2011-07-21
Compounds that selectively modulate the sphingosine 1 phosphate receptor are provided including compounds which modulate subtype 1 of the S1P receptor. Methods of chiral synthesis of such compounds is provided. Uses, methods of treatment or prevention and methods of preparing inventive compositions including inventive compounds are provided in connection with the treatment or prevention of diseases, malconditions, and disorders for which modulation of the sphingosine 1 phosphate receptor is medically indicated.
This invention relates to a novel group 2, 3 or 4 transition metal metallocene catalyst compound having at least one arenyl ligand substituted with: 1) a cyclopropyl group and, optionally, 2) at least one other group, such as a hydrocarbyl, a heteroatom or a heteroatom containing group.