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:
Dec. 08, 1998
Filed:
Oct. 10, 1996
Samuel A Sangokoya, Baton Rouge, LA (US);
Karl E Wiegand, Baton Rouge, LA (US);
Albemarle Corporation, Richmond, VA (US);
Abstract
Novel aluminum-containing compositions having increased paraffin-solubility are produced from a methylaluminoxane composition having lower paraffin-solubility. These compositions are formed by mixing in liquid phase (A) at least one aluminum trialkyl (or solution or suspension formed therefrom), where the aluminum trialkyl has at least 30 carbon atoms in the molecule, where each alkyl group thereof is bifurcated in the 2-position into a pair of branches, where one such branch has n carbon atoms and the other such branch has at least n+2 carbon atoms, and where n is at least 3; and (B) at least one methylaluminoxane composition having lower heptane-solubility (or a solution or slurry formed therefrom). Preferably, the resultant mixture is agitated at one or more elevated temperatures at which the mixture becomes even more homogeneous. The aluminum trialkyl preferably is one or more in which there are at least 36 carbon atoms in the molecule, in which n is at least 4 and in which the longer branch of the bifurcated alkyl groups has n+2 carbon atoms.