Milind M. Pradhan
Engineering at Avants Ave, Baton Rouge, LA
License number
Louisiana PE.0019568
Issued Date
Jul 28, 1981
Category
Civil Engineer
Type
Chemical Engineer
Address
Address
13243 Avants Ave, Baton Rouge, LA 70815
Professional information
Halide Reduction In Dihydrocarbylmagnesium Mixtures
US Patent:
7871547, Jan 18, 2011
Filed:
Nov 12, 2004
Appl. No.:
11/718380
Inventors:
Milind M. Pradhan - Baton Rouge LA, US
Chi Hung Cheng - Baton Rouge LA, US
Rajeev S. Mathur - Baton Rouge LA, US
Richard A. Holub - Baton Rouge LA, US
Donald W. Imhoff - Baton Rouge LA, US
Chi Hung Cheng - Baton Rouge LA, US
Rajeev S. Mathur - Baton Rouge LA, US
Richard A. Holub - Baton Rouge LA, US
Donald W. Imhoff - Baton Rouge LA, US
Assignee:
Albemarle Corporation - Richmond VA
International Classification:
C07F 1/02
US Classification:
260665G
Abstract:
This invention provides a process for reducing the amount of soluble halide in a solution comprising a liquid organic medium, at least one viscosity reducing agent, at least one dihydrocarbylmagnesium compound, and an initial amount of soluble halide. The process comprises mixing at least one alkali metal with the solution at a mole ratio of alkali metal to magnesium of less than about 1:2. 5, thereby forming precipitated soluble halides. Also provided by this invention is a process for reducing the amount of soluble halide in a slurry comprising a liquid organic medium, at least one viscosity reducing agent, at least one dihydrocarbylmagnesium compound, solids from the formation of said dihydrocarbylmagnesium compound, and an initial amount of soluble halide. This process comprises mixing at least one alkali metal with the slurry at a mole ratio of alkali metal to magnesium of less than about 1:1. 25, thereby forming precipitated soluble halides.
Process For Preparing Trimethylaluminum
US Patent:
5543537, Aug 6, 1996
Filed:
May 8, 1995
Appl. No.:
8/436695
Inventors:
David C. Eisenberg - Baton Rouge LA
Milind M. Pradhan - Baton Rouge LA
Milham S. Howie - Baton Rouge LA
Milind M. Pradhan - Baton Rouge LA
Milham S. Howie - Baton Rouge LA
Assignee:
Albemarle Corporation - Richmond VA
International Classification:
C07F 506
US Classification:
556157
Abstract:
Trimethylaluminum is made by an alkyl exchange process by first reacting a trialkylaluminum which has at least two carbon atoms in its alkyl groups with a methyl halide, optionally in the presence of an alkyl exchange catalyst, and then fractionally distilling trimethylaluminum from the product mixture in the presence of trialkylaluminum having at least two carbon atoms in its alkyl groups so as to convert the dimethylaluminum halide by-product of the alkyl exchange reaction into trimethylaluminum.