Abstract:
A catalyst composition comprising a zirconium complex of a polyvalent aryloxyether and the use thereof in a continuous solution polymerization of ethylene, one or more C 3-30 olefins, and a conjugated or nonconjugated diene to prepare interpolymers having improved processing properties are disclosed.
Abstract:
A process for the preparation of an aluminum alkyl chain growth product by the chain growth reaction of an α-olefin on an aluminum alkyl, optionally followed by displacement and recovery of the oligomeric alpha-olefin employing as a catalyst for the chain growth reaction a compositon comprising a Group 6 metal trisazacycloalkane complex and an activating cocatalyst.
Abstract:
Hafnium complexes of heterocyclic organic imidazol-2-yl ligands containing internal orthometallation and their use as components of olefin polymerization catalyst compositions, especially supported catalyst compositions, are disclosed.
Abstract:
Hafnium complexes of carbazolyl substituted imidazol ligands and their use as components of olefin polymerization catalyst compositions are disclosed.
Abstract:
Group 4 metal complexes comprising a polyvalent, heteroaryl donor ligand and their use as components of olefin polymerization catalysts, especially suited for preparing propylene/ethylene copolymer products having high isotacticity and low molecular weight, are disclosed.
Abstract:
Hafnium complexes of carbazolyl substituted imidazol ligands and their use as components of olefin polymerization catalyst compositions are disclosed.
Abstract:
Hafnium complexes of heterocyclic organic ligands containing internal orthometallation and their use as components of olefin polymerization catalysts, especially for gas-phase olefin polymerizations, are disclosed.
Abstract:
Hafnium complexes of heterocyclic organic ligands having improved solubility in aliphatic hydrocarbon solvents and their use as components of olefin polymerization catalysts as well as novel syntheses of component parts thereof are disclosed.
Abstract:
Group 4 metal complexes comprising a polyvalent, heteroaryl donor ligand and their use as components of olefin polymerization catalysts, especially suited for preparing propylene/ethylene copolymer products having high isotacticity and low molecular weight, are disclosed.
Abstract:
Group 4 metal complexes useful as addition polymerization catalysts of the formula: (I) wherein G 1 is a group containing from 1 to 40 atoms not counting hydrogen; T is a divalent bridging group of from 10 to 30 atoms not counting hydrogen, selected from mono- or di- aryl- substituted methylene or silylene groups or mono- or di- heteroaryl-substituted methylene or silylene groups, wherein at least one such aryl- or heteroaryl-substituent is substituted in one or both ortho- positions with a secondary or tertiary alkyl-group, a secondary or tertiary heteroalkyl group, a cycloalkyl group, or a heterocycloalkyl group, G 2 is a C 6-20 heteroaryl group containing Lewis base functionality, M is the Group 4 metal, X’’’’ is an anionic, neutral or dianionic ligand group, x’’’’ is a number from 0 to 5, and bonds, optional bonds and electron donative interactions are represented by lines, dotted lines and arrows respectively.