Title of Invention	"A PROCESS FOR USING A METHYL ACETATE STREAM IN A METHANOL CARBONYLATION PROCESS
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 (FIG. nil)

Title of Invention

"A PROCESS FOR USING A METHYL ACETATE STREAM IN A METHANOL CARBONYLATION PROCESS

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 (FIG. nil)

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Patent Number

219318

Indian Patent Application Number

00950/KOLNP/2004

PG Journal Number

18/2008

Publication Date

02-May-2008

Grant Date

30-Apr-2008

Date of Filing

06-Jul-2004

Name of Patentee

CELANESE INTERNATIONAL CORPORATION

Applicant Address

CORPORATION ORGANIZED AND EXISTING UNDER THE LAWS OF THE STTE DELAWARE, USA. 1601 WEST LBJ FREEWAY DALLAS, TEXAS 75234, USA.

Inventors:

#	Inventor's Name	Inventor's Address
1	WAYNE DAVID PIICARD MARK O, SCATES STEPHEN CARLES WEB DUANE LAYLE USREY	N/A16018 HAVENHURST DRIVE , HOUSTON , TX 77O59-5208, USA

PCT International Classification Number

C07C51/12

PCT International Application Number

PCT/US03/00416

PCT International Filing date

2003-01-07

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1	60/347, 532	2002-01-11	U.S.A.
2	10/324,648	2002-12-19	U.S.A.