IP Library › Granted Patent US 7,253,305
Granted Patent B2
US 7,253,305 · App. 11/190,084 · Granted Aug 7, 2007

Tertiary alkyl acetate preparation

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Quick Facts
Patent No.
US 7,253,305
App. No.
11/190,084
Granted
Aug 7, 2007
Kind
B2
Abstract

Esters are formed by reaction of acetic anhydride with tertiary butyl or tertiary anyl alcohol in the presence of tertiary amine catalyst such as DMAP or NMI catalyst and acetic acid in amount sufficient to present catalyst degradation; in preferred practice a mixed acetic anhydride and acetic acid stream is recycled to the esterfication.

Claims (6)

1. A process for the preparation of tertiary butyl acetate or tertiary amyl acetate wherein acetic anhydride is reacted with t-butyl alcohol or t-amyl alcohol in the presence of at least 5wt. % acetic acid during the entirety of the reaction.

2. The method of claim 1 wherein a mixture of acetic anhydride and acetic acid is recycled from product separation to the esterification reaction.

3. The method of claim 1 wherein a 1-alkylimidazole catalyst is used.

4. The method of claim 1 wherein a dialkylamino pyridine catalyst is used.

5. The method of claim 1 wherein 1-methylimidazole catalyst is used.

6. The method of claim 1 wherein a dimethylamino pyridine catalyst is used.

Assignments (20)
RELEASE OF SECURITY INTEREST Recorded Jan 23, 2014
From: DEUTSCHE BANK TRUST COMPANY AMERICAS
To: LYONDELL CHEMICAL TECHNOLOGY, L.P.
Reel/Frame 032123/0799 →
RELEASE OF SECURITY INTEREST Recorded Jan 23, 2014
From: CITIBANK, N.A.
To: LYONDELL CHEMICAL TECHNOLOGY, L.P.
Reel/Frame 032125/0296 →
RELEASE OF SECURITY INTEREST Recorded Jan 23, 2014
From: WELLS FARGO BANK, NATIONAL ASSOCIATION
To: LYONDELL CHEMICAL TECHNOLOGY, L.P.
Reel/Frame 032137/0156 →
APPOINTMENT OF SUCCESSOR ADMINISTRATIVE AGENT Recorded Jan 23, 2014
From: UBS AG, STAMFORD BRANCH
To: BANK OF AMERICA, N.A.
Reel/Frame 032137/0639 →
RELEASE OF SECURITY INTEREST Recorded Jan 23, 2014
From: BANK OF AMERICA, N.A.
To: LYONDELL CHEMICAL TECHNOLOGY, L.P.
Reel/Frame 032138/0134 →
SECURITY AGREEMENT Recorded May 19, 2010
From: LYONDELL CHEMICAL TECHNOLOGY, L.P.
To: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS COLLATERAL AGENT
Reel/Frame 024402/0681 →
SECURITY AGREEMENT Recorded May 18, 2010
From: LYONDELL CHEMICAL TECHNOLOGY, L.P.
To: CITIBANK, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 024397/0818 →
SECURITY AGREEMENT Recorded May 7, 2010
From: LYONDELL CHEMICAL TECHNOLOGY, L.P.
To: UBS AG, STAMFORD BRANCH, AS COLLATERAL AGENT
Reel/Frame 024342/0801 →
SECURITY AGREEMENT Recorded May 6, 2010
From: LYONDELL CHEMICAL TECHNOLOGY, L.P.
To: DEUTSCHE BANK TRUST COMPANY AMERICAS, AS COLLATERAL AGENT
Reel/Frame 024342/0421 →
RELEASE OF SECURITY INTEREST Recorded May 5, 2010
From: CITIBANK, N.A., AS COLLATERAL AGENT
To: LYONDELL CHEMICAL TECHNOLOGY, L.P.; EQUISTAR CHEMICALS, LP
Reel/Frame 024337/0856 →
RELEASE OF SECURITY INTEREST Recorded May 5, 2010
From: CITIBANK, N.A., AS COLLATERAL AGENT
To: LYONDELL CHEMICAL TECHNOLOGY, L.P.; EQUISTAR CHEMICALS, LP
Reel/Frame 024337/0705 →
RELEASE OF SECURITY INTEREST Recorded May 5, 2010
From: UBS AG, STAMFORD BRANCH, AS COLLATERAL AGENT
To: LYONDELL CHEMICAL TECHNOLOGY, LP
Reel/Frame 024337/0285 →
RELEASE OF SECURITY INTEREST Recorded May 5, 2010
From: CITIBANK, N.A., AS COLLATERAL AGENT
To: LYONDELL CHEMICAL TECHNOLOGY, LP
Reel/Frame 024337/0020 →
SECURITY AGREEMENT Recorded Oct 30, 2009
From: LYONDELL CHEMICAL TECHNOLOGY, L.P.
To: UBS AG, STAMFORD BRANCH, AS COLLATERAL AGENT
Reel/Frame 023449/0138 →
SECURITY AGREEMENT Recorded Apr 9, 2009
From: LYONDELL CHEMICAL TECHNOLOGY, L.P.
To: CITIBANK, N.A., AS ADMINISTRATIVE AGENT AND COLLATERAL AGENT
Reel/Frame 022708/0830 →
SECURITY AGREEMENT Recorded Aug 4, 2008
From: BASELL POLYOLEFINE GMBH; ARCO CHEMICAL TECHNOLOGY L.P.; ARCO CHEMICAL TECHNOLOGY, INC.; ATLANTIC RICHFIELD COMPANY; BASELL NORTH AMERICA, INC.; BASELL POLYOLEFIN GMBH; LYONDELL CHEMICAL COMPANY; EQUISTAR CHEMICALS, L.P.
To: CITIBANK, N.A., AS COLLATERAL AGENT
Reel/Frame 021354/0708 →
GRANT OF SECURITY INTEREST IN UNITED STATES PATENTS AND PATENT APPLICATIONS Recorded Mar 26, 2008
From: BASELL POLYOLEFINE GMBH; ARCO CHEMICAL TECHNOLOGY L.P.; ARCO CHEMICAL TECHNOLOGY, INC.; ATLANTIC RICHFIELD COMPANY; BASELL NORTH AMERICA, INC.; EQUISTAR CHEMICALS. LP.; LYONDELL CHEMICAL COMPANY; LYONDELL CHEMICAL TECHNOLOGY, L.P.; LYONDELL PETROCHEMICAL COMPANY; NATIONAL DISTILLERS AND CHEMICAL CORPORATION; OCCIDENTAL CHEMICAL CORPORATION; OLIN CORPORATION; QUANTUM CHEMICAL CORPORATION; BASELL POLYOLEFIN GMBH
To: CITIBANK, N.A., AS COLLATERAL AGENT
Reel/Frame 020704/0562 →
RELEASE OF LYONDELL CHEMICAL TECHNOLOGY, L.P. PATENT SECURITY AGREEMENT Recorded Mar 20, 2008
From: JPMORGAN CHASE BANK, N.A.
To: LYONDELL CHEMICAL TECHNOLOGY, L.P.
Reel/Frame 020679/0063 →
SECURITY AGREEMENT Recorded Sep 15, 2006
From: LYONDELL CHEMICAL TECHNOLOGY, L.P.
To: JPMORGAN CHASE BANK N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 018260/0306 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 26, 2005
From: HARRIS, STEPHEN H.
To: LYONDELL CHEMICAL TECHNOLOGY, L.P.
Reel/Frame 016794/0394 →