Stephen H Webb

US Patent:

7115772, Oct 3, 2006

Filed:

Dec 19, 2002

Appl. No.:

10/324648

Inventors:

Wayne David Picard - Houston TX, US
Mark O. Scates - Houston TX, US
Stephen Charles Webb - Clear Lake Shores TX, US
Duane Lyle Usrey - Paducah KY, US

Assignee:

Celanese International Corporation - Dallas TX

International Classification:

C07C 67/48

US Classification:

560248, 560231

Abstract:

The present invention is directed to using methyl acetate from a vinyl acetate-based or a vinyl-or ethylene-alcohol based polymer or copolymer process directly for use in a methanol carbonylation production process to produce acetic acid, acetic anhydride, or a coproduction of each. Methyl acetate is a by-product of commercial polyvinyl-alcohol or alkene vinyl alcohol copolymer-based processes. Generally, this material is processed to recover methanol and acetic acid. Discussed herein is a cost-saving scheme to by-pass the methyl acetate processing at production or plant facilities and utilize the methyl acetate in an integrated methanol carbonylation unit. The scheme discussed eliminates an expensive hydrolysis step often associated with the polymer process.

US Patent:

7767849, Aug 3, 2010

Filed:

Aug 23, 2006

Appl. No.:

11/508777

Inventors:

Mark O. Scates - Houston TX, US
Stephen Charles Webb - Clear Lake Shores TX, US
Duane Lyle Usrey - Paducah KY, US

International Classification:

C07C 51/12

US Classification:

562519

Abstract:

The present invention is directed to using methyl acetate from a vinyl acetate-based or a vinyl-or ethylene-alcohol based polymer or copolymer process directly for use in a methanol carbonylation production process to produce acetic acid, acetic anhydride, or a coproduction of each. Methyl acetate is a by-product of commercial polyvinyl-alcohol or alkene vinyl alcohol copolymer-based processes. Generally, this material is processed to recover methanol and acetic acid. Discussed herein is a cost-saving scheme to by-pass the methyl acetate processing at production or plant facilities and utilize the methyl acetate in an integrated methanol carbonylation unit. The scheme discussed eliminates an expensive hydrolysis step often associated with the polymer process.

US Patent:

7772422, Aug 10, 2010

Filed:

Aug 23, 2006

Appl. No.:

11/508778

Inventors:

Mark O. Scates - Houston TX, US
Stephen Charles Webb - Clear Lake Shores TX, US

Assignee:

Celanese International Corporation - Dallas TX

International Classification:

C07C 67/36
C07C 51/56

US Classification:

560232, 562891

Abstract:

The present invention is directed to using methyl acetate from a vinyl acetate-based or a vinyl-or ethylene-alcohol based polymer or copolymer process directly for use in a methanol carbonylation production process to produce acetic acid, acetic anhydride, or a coproduction of each. Methyl acetate is a by-product of commercial polyvinyl-alcohol or alkene vinyl alcohol copolymer-based processes. Generally, this material is processed to recover methanol and acetic acid. Discussed herein is a cost-saving scheme to by-pass the methyl acetate processing at production or plant facilities and utilize the methyl acetate in an integrated methanol carbonylation unit. The scheme discussed eliminates an expensive hydrolysis step often associated with the polymer process.

US Patent:

7812192, Oct 12, 2010

Filed:

Aug 23, 2006

Appl. No.:

11/508775

Inventors:

Mark O. Scates - Houston TX, US
Stephen Charles Webb - Clear Lake Shores TX, US

Assignee:

Celanese International Corporation - Dallas TX

International Classification:

C07C 53/08
C07C 51/54

US Classification:

562607, 562893

Abstract:

The present invention is directed to using methyl acetate from a vinyl acetate-based or a vinyl- or ethylene-alcohol based polymer or copolymer process directly for use in a methanol carbonylation production process to produce acetic acid, acetic anhydride, or a coproduction of each. Methyl acetate is a by-product of commercial polyvinyl-alcohol or alkene vinyl alcohol copolymer-based processes. Generally, this material is processed to recover methanol and acetic acid. Discussed herein is a cost-saving scheme to by-pass the methyl acetate processing at production or plant facilities and utilize the methyl acetate in an integrated methanol carbonylation unit. The scheme discussed eliminates an expensive hydrolysis step often associated with the polymer process.

US Patent:

7906680, Mar 15, 2011

Filed:

Aug 23, 2006

Appl. No.:

11/508776

Inventors:

Mark O. Scates - Houston TX, US
Stephen Charles Webb - Clear Lake Shores TX, US

Assignee:

Celanese International Corporation - Dallas TX

International Classification:

C07C 53/08

US Classification:

562607

Abstract:

The present invention is directed to using methyl acetate from a vinyl acetate-based or a vinyl- or ethylene-alcohol based polymer or copolymer process directly for use in a methanol carbonylation production process to produce acetic acid, acetic anhydride, or a coproduction of each. Methyl acetate is a by-product of commercial polyvinyl-alcohol or alkene vinyl alcohol copolymer-based processes. Generally, this material is processed to recover methanol and acetic acid. Discussed herein is a cost-saving scheme to by-pass the methyl acetate processing at production or plant facilities and utilize the methyl acetate in an integrated methanol carbonylation unit. The scheme discussed eliminates an expensive hydrolysis step often associated with the polymer process.

Address:

7037 Heron Dr, Houston, TX 77087

Phone:

7136491078

VIN:

1FAFP56U77A104265

Make:

FORD

Model:

TAURUS

Year:

2007