Conversion of terephthalic acid to Di-n-butyl terephthalate

Details Conversion of terephthalic acid to Di-n-butyl terephthalate Conversion of terephthalic acid to Di-n-butyl terephthalate

2007-04-03

2010-06-22

Kumar, Shailendra (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

Reexamination Certificate

active

07741509

ABSTRACT:
Disclosed is a process for the preparation of di-n-butyl terephthalate by the esterification of terephthalic acid with n-butanol in the presence of a strong acid while employing a fractionating column.

REFERENCES:
patent: 1944887 (1934-01-01), De Witt Graves
patent: 2124605 (1938-07-01), Bousquet
patent: 2459014 (1949-01-01), Lufkin et al.
patent: 2479066 (1949-08-01), Gresham
patent: 2491660 (1949-12-01), Gresham
patent: 2579329 (1951-12-01), Martin
patent: 2802861 (1957-08-01), De Jonge et al.
patent: 2975209 (1961-03-01), Bos et al.
patent: 3155715 (1964-11-01), Ardis et al.
patent: 3250801 (1966-05-01), Stange et al.
patent: 4380677 (1983-04-01), Kurek
patent: 4654436 (1987-03-01), Lane et al.
patent: 4675434 (1987-06-01), Uhm et al.
patent: 5138025 (1992-08-01), Mossman
patent: 5326864 (1994-07-01), Besemer et al.
patent: 5391770 (1995-02-01), Le Fur et al.
patent: 5532495 (1996-07-01), Bloomquist et al.
patent: 5571387 (1996-11-01), Marker et al.
patent: 5585527 (1996-12-01), Marker
patent: 6841505 (2005-01-01), Eng
patent: 7276621 (2007-10-01), Cook et al.
patent: 2002/0028963 (2002-03-01), Gubisch et al.
patent: 2004/0030175 (2004-02-01), Disteldorf et al.
patent: 2007/0161815 (2007-07-01), Osborne et al.
patent: 733 322 (1955-07-01), None
patent: 878269 (1961-09-01), None
patent: 60 004151 (1985-01-01), None
patent: 2001 031794 (2001-02-01), None
patent: 2003238479 (2003-08-01), None
patent: 2005 120019 (2005-05-01), None
patent: 2005 306759 (2005-11-01), None
patent: 2 114 100 (1998-06-01), None
patent: WO 2007/021475 (2007-02-01), None
Zeng, Chongyu; “Study on esterification rule in DOTP preparation”; XP0024138167 retrieved from STN Database accession No. 1995:468078; Chemical Abstracts Service, Columbus, Ohio.
Jiang, Pinping; “Synthesis of DOTP plasticizer by esterification”; XP002413816 retrieved from STN Database accession No. 1995:454573; Chemical Abstracts Service, Columbus, Ohio.
Meiqi, Fu; “A Technique of Producing Dioctyl Terephthalate and an Improvement in the Technique”; Tianjin Chemical Industry, China, vol. 20, No. 17, 2006.
Mekhtiev, S. D. et al.; “Esterification of terephthalic and isophthalic acids by aliphatic alcohols”; Azerbaidzhanskii Khimicheskii Zhurnal; vol. 3; 1965; pp. 67-72.
Yoneda, Shigeo et al.; “Organic synthesis by use of inorganic salts. XII. Preparation of esters of carboxylic acids in dimethylformamide”; Kogyo Kagaku Zasshi; 69(4); 1966; pp. 641-643.
Roberts, Carleton W. et al.; The synthesis of and the dye-sensitized photoinitiated decompositions of monomolecular analogs of poly(ethylene terephthalate); Clemson University Review of Industrial Management and Textile Science; 15(1); 1976; pp. 13-35.
Notification of Transmittal of the International Search Report and the Written Opinion of the International Searching Authority, or the Declaration date of mailing Feb. 16, 2007 received in the International Application No. PCT/US2006/028942.
Office Action date of mailing Jul. 10, 2007 received on co-pending U.S. Appl. No. 11/699,652.
Office Action date of mailing Jun. 11, 2008 received on co-pending U.S. Appl. No. 11/699,652.
Notification of Transmittal of the International Search Report and the Written Opinion of the International Searching Authority, or the Declaration date of mailing Jun. 25, 2008 received in the International Application No. PCT/US2008/008355.
Notification of Transmittal of the International Search Report and the Written Opinion of the International Searching Authority, or the Declaration date of mailing Jul. 2, 2008 received in the International Application No. PCT/US2008/000503.

Affiliated with

Also associated with

Rating

Conversion of terephthalic acid to Di-n-butyl terephthalate does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Conversion of terephthalic acid to Di-n-butyl terephthalate, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Conversion of terephthalic acid to Di-n-butyl terephthalate will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4166161