George M Kvakovszky

6555726, Apr 29, 2003

Nov 10, 1999

09/448651

Artie S. McKim - Mandeville LA
George Kvakovszky - Slidell LA
Michael D. Donahue - The Woodlands TX

Gaylord Chemical Corporation - Slidell LA

C07C 710

585857, 585833, 585860, 585864, 585865, 585866

The invention relates to methods for enhanced extractive distillation of hydrocarbons that employ extrative distillation compositions comprising sulfolane or sulfolane derivatives in comination with compatibility agents.

6617483, Sep 9, 2003

May 3, 2000

09/565170

Artie S. McKim - Mandeville LA
George Kvakovszky - Slidell LA
Michael D. Donahue - The Woodlands TX
Chris B. Watts - Mandeville LA

Gaylord Chemical Corporation - Slidell LA

C07C 710

585833, 585856, 585857, 585860, 585864, 585865, 585866

The invention relates to extractive distillation compositions for separating a mixture of hydrocarbon compounds, wherein the extractive distillation composition includes at least one alkylene glycol compound, and at least one compatibility agent, wherein the compatibility agent is selected from materials having polar parameters and hydrogen bonding parameters such that the extractive distillation composition provides improved separation of the hydrocarbon compounds, as compared to the use of the extractive distillation composition without the compatibility agent.

6660899, Dec 9, 2003

Feb 14, 2001

09/783705

Artie S. McKim - Slidell LA
George Kvakovszky - Slidell LA
Michael D. Donahue - The Woodlands TX

Gaylord Chemical Corporation - Slidell LA

C07C 717

585856, 585857

The invention relates to a distillation process composition at least partially separating mixtures of aromatic and non-aromatic hydrocarbon compounds employing an extractive distillation composition comprising: a. at least one organic sulfoxide of the formula b. at least one acrylic sulfone of the formula âwherein R , R , R , and R have at least one carbon atom and can be the same or different, and âwherein the at least one organic sulfoxide is present in an amount effective to provide improved separation of the aromatic and non-aromatic hydrocarbon compounds, as compared to a process employing the same extractive distillation composition not comprising the organic sulfoxide.

6673157, Jan 6, 2004

Feb 24, 2000

09/512162

Artie S. McKim - Slidell LA
George Kvakovszky - Slidell LA
James E. Schmidheiser - West Chester PA

Gaylord Chemical Corporation - Slidell LA

B08B 304

134 2, 134 38, 134 42, 134 2219, 510201

The invention relates to a method for stripping paint from surfaces, comprising: a) contacting a painted surface with a paint stripping composition, and b) separating at least some of the paint contacted with the paint stripping composition from the painted surface; c) wherein the paint stripping composition comprises: i) from about 60 to about 99% by volume of one or more environmentally acceptable esters selected from the group consisting of t-butyl acetate, a carboxylic acid methyl ester having a caboxylate residue of at least three carbon atoms, an ester of lactic acid, an ester of oxalic acid having two alkoxy residues wherein each alkoxy residue has at least three carbon atoms, diethyl tartrate, triethyl citrate, tributyl citrate, and one or more sugar esters; and ii) dimethyl sulfoxide which is present in an amount from about 1 to about 40% by volume of the composition.

20090005601, Jan 1, 2009

Sep 17, 2007

11/901322

George Kvakovszky - Slidell LA, US
David Villarrubia, II - Charles City LA, US
Scott Stevenson - Lake Jackson TX, US
Charles G. Ashe - Carriere MS, US

C07C 315/06

568 27, 422 5

The disclosed process relates to the removal of malodorous compounds from dimethyl sulfoxide.

54592666, Oct 17, 1995

Feb 4, 1994

8/191848

George Kvakovszky - Corpus Christi TX
Richard Vicari - Corpus Christi TX
Ahamed M. Tafesh - Corpus Christi TX
Kathleen N. Juneau - Corpus Christi TX
Olan S. Fruchey - Corpus Christi TX
Joseph A. McDonough - Corpus Christi TX
Debasish Kuila - Corpus Christi TX

Hoechst Celanese Corporation - Somerville NJ

C07D24112
C07D24116
C07D24118
C07D40310

544336

The present invention provides novel substituted pyrazines or pyrazine derivatives ("NPD") which are functional and have useful application as a monomer for a variety of high performance polymers such as polyester, polyarylate, polycarbonate, polyetherketones, epoxides, polyimides, polyamides, and polyamides-imides. These NPD have the general formula: ##STR1## wherein R. sub. 1, R. sub. 2, R. sub. 3, and R. sub. 4 are defined herein.

53997646, Mar 21, 1995

May 20, 1994

8/246892

Ahmed M. Tafesh - Corpus Christi TX
George Kvakovszky - Corpus Christi TX
Charlet R. Lindley - Portland TX

Hoechst Celanese Corporation - Somerville NJ

C07C20952
C07C22510

564343

Arylketoamines are prepared by reacting arylisonitrosoalkanones with hydrogen in the presence of a transition metal catalyst and a liquid carboxylic acid at a temperature of less than about 60. degree. C.

53046900, Apr 19, 1994

Jun 22, 1993

8/080897

George Kvakovszky - Corpus Christi TX
James H. Rea - Corpus Christi TX
Michael I. Sheehan - Corpus Christi TX
Brad L. Smith - Matthews NC

Hoechst Celanese Corporation - Sommerville NJ

C07C 3920
C07C 6996

568780

4-Acetoxystyrene is reacted with a base in a solvent to form a salt of 4-hydroxystyrene via saponification. Alternatively, 4-hydroxystyrene is reacted with a base to form a salt of 4-hydroxystyrene. In the latter case, the 4-hydroxystyrene is prepared by the transesterification of 4-acetoxystyrene. Subsequently or simultaneously, the salt of 4-hydroxystyrene is reacted, preferably in situ, with di-tertiary-butyl-dicarbonate to form 4-tertiarybutoxycarbonyloxystyrene.