IP Library › Granted Patent US 6,884,898
Granted Patent B1
US 6,884,898 · App. 10/730,420 · Granted Apr 26, 2005

Propylene oxide process

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Quick Facts
Patent No.
US 6,884,898
App. No.
10/730,420
Granted
Apr 26, 2005
Kind
B1
Abstract

Propylene oxide is formed by reaction of propylene with molecular oxygen in a high boiling solvent containing slurried solid catalyst, the light components are flashed and the remaining liquid containing slurried catalyst is recycled.

Claims (6)

1. In a continuous process for the production in a reaction zone of propylene oxide by reacting propylene with molecular oxygen and hydrogen at reactive conditions in a liquid solvent containing a solid noble metal on titanium silicalite epoxidation catalyst slurried in the solvent, the improvement which comprises employing a solvent having a boiling point of at least 130° C., continuously removing a reaction liquid stream from the reaction zone, flashing lower boiling components comprising propylene oxide as vapor from the said reaction liquid stream and recycling a liquid slurry of solvent and catalyst slurry from the flashing step to the oxidation reaction zone.

2. The process of claim 1 wherein the solvent has a boiling point of at least 180° C.

3. The process of claim 1 wherein the solvent is dipropylene glycol monomethyl ether.

4. The process of claim 1 wherein the solvent is methoxy propanol.

5. The process of claim 1 wherein the solid epoxidation catalyst comprises a noble metal on TS-1.

6. The process of claim 1 wherein the solid epoxidation catalyst comprises Pd on TS-1.

Assignments (21)
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 →
CHANGE OF NAME Recorded Jun 27, 2005
From: ARCO CHEMICAL TECHNOLOGY, L.P.
To: LYONDELL CHEMICAL TECHNOLOGY, L.P.
Reel/Frame 016206/0001 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 8, 2003
From: MILLER, JAY F.
To: ARCO CHEMICAL TECHNOLOGY, L.P.
Reel/Frame 014772/0970 →