The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 28, 1987
Filed:
Aug. 07, 1986
Ricardo Fuentes, Jr, Baton Rouge, LA (US);
Gary R Marchand, Baton Rouge, LA (US);
Larry A Meiske, Baton Rouge, LA (US);
The Dow Chemical Company, Midland, MI (US);
Abstract
A method for preparing Ziegler catalysts is disclosed wherein a mixture (A) containing the product resulting from mixing in an inert hydrocarbon diluent (1) a hydrocarbon soluble magnesium alkyl compound in said hydrocarbon solvent, (2) an aliphatic alcohol or carbon dioxide and (3) a titanium compound is reacted with (B) a reducing halide source in said hydrocarbon solvent. Components (A) and (B) are mixed at a constant initial temperature. When the magnesium concentration in component (A) and the metal concentration in component (B) are relatively low, the resultant polymer has a relatively narrow particle size distribution whereas when said concentration is relatively high, the resultant polymer has a relatively broad particle size distribution. When the ratio of the number of moles of aliphatic alcohol:total number of hydrocarbyl groups attached to the metal atom in component (1) is relatively low, the resultant polymer has a relatively small average particle size. When the ratio of the number of moles of aliphatic alcohol:total number of hydrocarbyl groups attached to the metal atom in component (1) is relatively high, the resultant polymer has a relatively large average particle size.