Gary D Focht

US Patent:

6348219, Feb 19, 2002

Filed:

Sep 18, 2000

Appl. No.:

09/663788

Inventors:

James E. Torres - Baton Rouge LA
Gary D. Focht - Baton Rouge LA

Assignee:

Albemarle Corporation - Richmond VA

International Classification:

A01N 5902

US Classification:

424703, 424615, 424665, 424722, 424723

Abstract:

The process involves (a) continuously forming bromine chloride from separate feed streams of bromine and chlorine by maintaining said streams under automatic feed rate control whereby the streams are continuously proportioned to come together to form bromine chloride; (b) continuously forming an aqueous product having an active bromine content of at least 100,000 ppm (wt/wt), a pH of at least 7, and an atom ratio of nitrogen to active bromine greater than 0. 93:1 by continuously or intermittently feeding into mixing apparatus separate feed streams of (1) bromine chloride formed in (a), and (2) an aqueous solution of alkali metal salt of sulfamic acid, under automatic feed rate control.

US Patent:

6352725, Mar 5, 2002

Filed:

Nov 30, 1999

Appl. No.:

09/451344

Inventors:

James E. Torres - Baton Rouge LA
Gary D. Focht - Baton Rouge LA

Assignee:

Albemarle Corporation - Richmond VA

International Classification:

A01N 3900

US Classification:

424703, 424615, 424663, 424665, 424680, 424723

Abstract:

The process involves (a) continuously forming bromine chloride from separate feed streams of bromine and chlorine by maintaining said streams under automatic feed rate control whereby the streams are continuously proportioned to come together in equimolar amounts to form bromine chloride; (b) continuously forming an aqueous product having an active bromine content of at least 100,000 ppm (wt/wt), a pH of at least 7, and an atom ratio of nitrogen to active bromine greater than 0. 93:1 by continuously feeding into mixing apparatus separate feed streams of (1) bromine chloride formed in (a), and (2) an aqueous solution of alkali metal salt of sulfamic acid, under automatic feed rate control whereby the feed streams are continuously proportioned to come together in amounts that produce an aqueous product having an active bromine content of at least 100,000 ppm (wt/wt), a pH of at least 7, and an atom ratio of nitrogen to active bromine from (1) and (2) greater than 0. 93:1; and, (c) withdrawing said aqueous product from said mixing apparatus at a rate sufficient to enable the continuous feeding in (a) and (b) to be maintained.

US Patent:

54203694, May 30, 1995

Filed:

Jul 18, 1994

Appl. No.:

8/276584

Inventors:

R. Carl Herndon - Baton Rouge LA
Gary D. Focht - Baton Rouge LA
Karl R. Jones - Baton Rouge LA

Assignee:

Albemarle Corporation - Richmond VA

International Classification:

C07C 1710
C07C 1712
C07C 2500

US Classification:

570191

Abstract:

The co-formation of diarylalkane by-product in the chloroalkylation of an aromatic compound with an aldehyde is minimized by conducting the reaction in a continuous manner in a concentration with agitation and in the presence of both hydrogen sulfate and hydrogen chloride.

US Patent:

60969202, Aug 1, 2000

Filed:

Jul 8, 1998

Appl. No.:

9/111935

Inventors:

Robert H. Allen - Baton Rouge LA
R. Carl Herndon - Baton Rouge LA
Kannappan C. Chockalingam - Baton Rouge LA
W. Dirk Klobucar - Baton Rouge LA
Gary D. Focht - Baton Rouge LA
Tse-Chong Wu - Baton Rouge LA
Gary D. Heidebrecht - Orangeburg SC
Joseph D. McLean - Orangeburg SC
Yaping Zhong - Columbia SC
Thorsten W. Brockmann - Columbia SC
Ronny W. Lin - Baton Rouge LA
William J. Layman - Baton Rouge LA
Ranjit K. Roy - Baton Rouge LA

Assignee:

Albemarle Corporation - Richmond VA

International Classification:

C07C 5110

US Classification:

562406

Abstract:

Palladium-catalyzed arylation of an olefin (e. g. , ethylene) with an aromatic halide (e. g. , 2-bromo-6-methoxynaphthalene, m-bromobenzophenone, or 4-isobutyl-1-bromobenzene) is conducted in specified media. After a special acid or base phase separation procedure, palladium-catalyzed carbonylation of the olefinically-substituted aromatic intermediate is conducted in specified media using CO and water or an alcohol to form arylalkylcarboxylic acid or ester or substituted arylalkylcarboxylic acid or ester (e. g. , racemic 2-(6-methoxy-2-naphthyl)propionic acid, 2-(3-benzoylphenyl)propionic acid, or 2-(4-isobutylphenyl)propionic acid). Catalyst recovery procedures enabling recycle of catalyst residues and efficient recovery of amine hydrogen halide scavenger and solvent used in the arylation reaction are described, as well as novel, highly efficient methods of conducting the carbonylation reaction. The technology is economical and suitable for use on an industrial scale whereby reaction mixtures can be efficiently separated into the desired component mixtures without need for excessive capital investment or tedious, time-consuming operations. High yields of high purity products can be achieved.

US Patent:

62714171, Aug 7, 2001

Filed:

Sep 24, 1999

Appl. No.:

9/406246

Inventors:

Gary D. Focht - Baton Rouge LA
W. Dirk Klobucar - Baton Rouge LA

Assignee:

Albemarble Corporation - Richmond VA

International Classification:

C07C 5158

US Classification:

562840

Abstract:

Meta-bromination with suppression of para-bromination is achieved by forming a reaction mixture comprised of (i) bromine chloride, (ii) a bromination catalyst, and (iii) a benzoyl halide, and maintaining the temperature of the resultant reaction mixture at one or more temperatures above 0. degree. C. , but not greater than 30. degree. C. The bromine chloride is preferably formed in situ, most preferably by sparging gaseous chlorine into a mixture of bromine, finely-divided iron, and benzoyl chloride.

US Patent:

52783316, Jan 11, 1994

Filed:

Oct 9, 1990

Appl. No.:

7/594404

Inventors:

Charles T. Bounds - Magnolia AR
Gary D. Focht - Magnolia AR
W. Brian Harrod - Minden LA

Assignee:

Ethyl Corporation - Richmond VA

International Classification:

C07F 920

US Classification:

558148

Abstract:

An improvement in the process for making a dialkyl phosphorochloridothioate from P. sub. 2 S. sub. 5, alkyl alcohol and chlorine in which the desired product is separated from the reaction mixture by distillation, leaving an unstable, acidic residue, wherein the residue is stabilized and neutralized by reaction with an organic base, thereby enhancing the value of the residue while avoiding potential environmental damage caused by disposal of the residue.

US Patent:

60808888, Jun 27, 2000

Filed:

Jan 8, 1997

Appl. No.:

8/780310

Inventors:

Tse-Chong Wu - Baton Rouge LA
Kannappan C. Chockalingham - Baton Rouge LA
W. Dirk Klobucar - Baton Rouge LA
Gary D. Focht - Baton Rouge LA

Assignee:

Albemarle Corporation - Richmond VA

International Classification:

C07C 6334

US Classification:

562467

Abstract:

Arylolefinic compounds are prepared by reacting aryl halide with an olefinic compound in the presence of a polar liquid reaction medium containing (a) secondary or tertiary amine as a hydrogen halide acceptor (b) a catalyst system formed from (i) Pd or Pd(0) compound, and/or Pd(I) salt or Pd(II) salt, and (ii) a tertiary phosphine ligand, and (c) a reaction accelerating amount of water in the range of about 0. 5 to about 5 weight percent of the total weight of the reaction mixture. The arylolefinic compounds can be converted to an arylcarboxylic acid by hydrocarboxylation with CO in a reaction medium freed of amine and containing water and a Pd catalyst system as above in which a copper component may be included, and which preferably includes an ether such as THF.