| 摘要 |
Ethylene copolymers having a density of >/=0.91 to </=0.96 and a melt flow ratio of >/=22 to </=32 are readily produced in a low pressure gas phase process at a productivity of >/=50,000 pounds of polymer per pound of Ti with a particulate catalyst diluted with an inert carrier material and formed from selected organo aluminum compounds and a precursor composition of the formula: MgmTi1(OR)nXp[ED]q wherein ED is a selected electron donor compound. m is >/=0.5 to </=56 n is 0 or 1 p is >/=6 to </=116 q is >/=2 to </=85 R is a C1 to C14 aliphatic or aromatic hydrocarbon radical, or COR' wherein R' is a C1 to C14 aliphatic or aromatic hydrocarbon radical, and X is selected from the group consisting of Cl, Br, I, or mixtures thereof. |
| 申请人 |
UNION CARBIDE CORP, |
发明人 |
FRASER, WILLIAM ALLEN,;WAGNER, BRUKHARD ERIC,;KAROL, FREDERICK JOHN,;GOEKE, GEORGE LEONARD,;JORGENSEN, ROBERT JAMES,;FRIIS, NILS, |
