| 5770764 |
Process for preparing purified aromatic polycarboxylic acids |
David L. Sikkenga, Stephen V. Hoover, Paul K. Behrens |
1998-06-23 |
| 5292934 |
Method for preparing aromatic carboxylic acids |
David L. Sikkenga, George E. Kuhlmann, Paul K. Behrens, Stephen V. Hoover |
1994-03-08 |
| 5262560 |
Process for preparing purified dimethyl naphthalenedicarboxylate |
Juergen K. Holzhauer, David A. Young, Paul K. Behrens |
1993-11-16 |
| 5118838 |
By-product recovery when oxidizing polymethylbenzenes to polycarboxylic acids |
David Hacker, Kristi A. Fjare, Diane J. Graziano, Stacey L. Kissinger |
1992-06-02 |
| 5099064 |
Method for increasing conversion efficiency for oxidation of an alkyl aromatic compound to an aromatic carboxylic acid |
William F. Huber, Jr. |
1992-03-24 |
| 5095146 |
Water addition to crystallization train to purify terephthalic acid product |
Diane Wilger-Nowicki |
1992-03-10 |
| 4835307 |
Method and apparatus for controlling the manufacture of terephthalic acid to control the level and variability of the contaminant content and the optical density |
Harold A. Lindahl, Kenneth J. Abrams, Leonard E. Stark |
1989-05-30 |
| 4777287 |
Recycle of vaporized solvent in liquid phase oxidation of an alkyl aromatic |
Stafford J. McQuillin |
1988-10-11 |
| 4500732 |
Process for removal and recycle of p-toluic acid from terephthalic acid crystallizer solvent |
Bruce Petty-Weeks |
1985-02-19 |
| 4338464 |
Removal of bromobutanone from acetic acid |
Jon J. Harper |
1982-07-06 |
| 4278503 |
Low bromine content glacial acetic acid |
Jon J. Harper |
1981-07-14 |