Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Patent
1994-03-28
1995-07-04
Lone, Werren B.
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
568722, C07C 3774
Patent
active
054301998
ABSTRACT:
A method is provided for recovering phenol values from bisphenol A tar by treating the bisphenol A tar with an alkyl phenol, such as cresol in the presence of an acid catalyst. In addition to recovering phenol, there is obtained a variety of dialkyl 9,9-dimethylxanthenes which can be converted to dicarboxylic acids and their corresponding diesters which are useful polymer intermediates.
REFERENCES:
patent: 4131749 (1978-12-01), Kiedik et al.
patent: 4180683 (1979-12-01), Mitchell
patent: 4277628 (1981-07-01), Carnahan
Article-By-product of the Bisphenol A reaction. Syntheses and Structure Assignments of 2,4'-Isopropylidenediphenol and 4,4'-(4-Hydrosy-m-phenylenediisopropylidene)-diphenol, FW Neumann and W. E. Smith-J. Org. Chem. Notes, vol. 31 (1966) pp. 4318-4320.
R. J. Michaels-J. Org. Chem. vol. 39, No. 6 (1974)-3 pages.
Article-Solvelysis of Xanthenyl & Fluoronyl Ion Pair 1,2-Dimethylxanthene, H. E. Zougg and J. S. Nowick et al. American Chem. Society (1990) pp. 8902-8906.
Article-Convergent Functional Groups. 9. Complexation in New Molecular Clefts, J. S. Nowick et al. American Chem. Society (1990) pp. 8902-8906.
Article-Analogues des Tetrahydrocannabinols et produits apparentes-II-Syntheses dans la serie du xanthene, Jean-Bernard Chazan and Guy Ourisson (In French) Bulletin De La Societe Chimique De France (1968) No. 4-pp. 1384-1393.
Article-Analogues des Tetrahydrocannabinols et produits apparentes. I-Produits de Condensation de la pulegone et de l'orcinol en presence de POCI3, Jean-Bernard Chazan and Guy Ourisson (In French) Bulletin De La Societe Chimique De France (1968) No. 4-pp. 1374-1384.
Article-Exhaustive C-Methylation of Ketones by Trimethylaluminum, A. Meisters and T. Mole, Aust. J. Chem. (1974) 27, pp. 1655-1663.
Caruso Andrew J.
Lee Julia L.
General Electric Company
Lone Werren B.
Pittman William H.
LandOfFree
Method for recovering phenol and xanthene values from bisphenol does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for recovering phenol and xanthene values from bisphenol , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for recovering phenol and xanthene values from bisphenol will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-761538