Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Reexamination Certificate
2008-11-14
2010-12-21
Puttlitz, Karl J (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
C560S243000
Reexamination Certificate
active
07855303
ABSTRACT:
This invention provides an integrated two stage economical process for the production of vinyl acetate monomer (VAM) from acetic acid in the vapor phase. First, acetic acid is selectively hydrogenated over a hydrogenating catalyst composition to form ethylene either in a single reactor zone or in a dual rector zone wherein the intermediate hydrogenated products are either dehydrated and/or cracked to form ethylene. In a subsequent second stage so formed ethylene is reacted with molecular oxygen and acetic acid over a suitable catalyst to form VAM. In an embodiment of this invention reaction of acetic acid and hydrogen over a hydrogenation catalyst and subsequent reaction over a dehydration catalyst selectively produces ethylene, which is further mixed with acetic acid and molecular oxygen and reacted over a supported palladium/gold/potassium catalyst.
REFERENCES:
patent: 2021698 (1935-11-01), Perkins
patent: 2425389 (1947-08-01), Oxley et al.
patent: 2607807 (1952-08-01), Ford
patent: 2859241 (1958-11-01), Schnizer
patent: 2882244 (1959-04-01), Milton
patent: 3130007 (1964-04-01), Breck
patent: 3702886 (1972-11-01), Argauer et al.
patent: 4270015 (1981-05-01), Knifton
patent: 4398039 (1983-08-01), Pesa et al.
patent: 4399305 (1983-08-01), Schreck
patent: 4421939 (1983-12-01), Kiff et al.
patent: 4480115 (1984-10-01), McGinnis
patent: 4517391 (1985-05-01), Schuster et al.
patent: 4620050 (1986-10-01), Cognion et al.
patent: 4696596 (1987-09-01), Russell
patent: 4843170 (1989-06-01), Isshiki et al.
patent: 4873392 (1989-10-01), Le Van Mao
patent: 4933204 (1990-06-01), Warren, Jr. et al.
patent: 4978778 (1990-12-01), Isshiki et al.
patent: 5149680 (1992-09-01), Kitson et al.
patent: 5185308 (1993-02-01), Bartley et al.
patent: RE35377 (1996-11-01), Steinberg et al.
patent: 5674800 (1997-10-01), Abel et al.
patent: 5691267 (1997-11-01), Nicolau et al.
patent: 5719315 (1998-02-01), Tustin et al.
patent: 5731456 (1998-03-01), Tustin et al.
patent: 5821111 (1998-10-01), Grady et al.
patent: 6040474 (2000-03-01), Jobson et al.
patent: 6114571 (2000-09-01), Abel et al.
patent: 6121498 (2000-09-01), Tustin et al.
patent: 6232352 (2001-05-01), Vidalin
patent: 6476261 (2002-11-01), Ellis et al.
patent: 6603038 (2003-08-01), Hagemeyer et al.
patent: 6657078 (2003-12-01), Scates et al.
patent: 6685754 (2004-02-01), Kindig et al.
patent: 6696596 (2004-02-01), Herzog et al.
patent: 6852877 (2005-02-01), Zeyss et al.
patent: 2003/0018229 (2003-01-01), Vaughn et al.
patent: 2006/0106246 (2006-05-01), Warner et al.
patent: 2010/0030001 (2010-02-01), Chen et al.
patent: 2010/0030002 (2010-02-01), Johnston et al.
patent: 175558 (1986-03-01), None
patent: 192587 (1986-08-01), None
patent: 0 330 853 (1989-09-01), None
patent: 1 559 540 (1980-01-01), None
patent: 2006-116439 (2006-11-01), None
patent: 99/08791 (1999-02-01), None
patent: 99/08791 (1999-02-01), None
patent: 02092541 (2002-11-01), None
patent: 2010014152 (2010-02-01), None
patent: 2010014152 (2010-02-01), None
Mol. Sieves Pap. Conf., 1967, 78, Soc. Chem. Ind. London, by D. Domine and J. Quobex.
U.S. Appl. No. 12/221,137, filed Jul. 31, 2008, Johnston et al.
U.S. Appl. No. 12/221,138, filed Jul. 31, 2008, Johnston et al.
International Search Report and Written Opinion for PCT/US2009/004191 mailed Mar. 24, 2010 (13 pages).
International Search Report and Written Opinion for PCT/US2009/006016 mailed Apr. 29, 2010 (10 pages).
Tustin et al., Synthesis of vinyl acetate monomer from synthesis gas, Catalyst Today, vol. 58(4) (2000) pp. 281-291.
Roscher, “Ullmann's Encyclopedia of Industrial Chemistry - Vinyl Esters, ”Ullmann's Encyclopedia of Industrial Chemistry (2000) pp. 1-18.
Chapman Josefina T.
Chen Laiyuan
Johnston Victor J.
Kimmich Barbara F.
Repman Deborah R.
Celanese International Corporation
Puttlitz Karl J
LandOfFree
Integrated process for the production of vinyl acetate from... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Integrated process for the production of vinyl acetate from..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Integrated process for the production of vinyl acetate from... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4200479