Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Reexamination Certificate
2006-11-28
2006-11-28
Boykin, Terressa (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
C208S210000, C208S211000, C208S212000, C208S25100H, C210S521000, C210S522000, C585S510000, C585S514000
Reexamination Certificate
active
07141640
ABSTRACT:
An upflow reactor for the production of bisphenol A from acetone and phenol includes a vessel, a catalyst bed disposed within the vessel, and a reactant distribution/product collection system disposed within the vessel. The reactant distribution/product collection system includes a perforated distributor disposed at a lower end of the reactor. The reactant distribution/product collection system further includes a perforated collector disposed at an upper end of the reactor. A method for producing bisphenol A from acetone and phenol Includes Introducing the reacting mixture containing acetone and phenol to the distributor, directing it upward through the catalyst bed, and recovering the reacted acetone and phenol as bisphenol A together with other isomers and non reacted species. A method for avoiding catalyst bead carryover from the bed in an upflow reactor Includes receiving a product of the upflow reactor into the collector disposed at an upper end of the reactor through a screen with proper slit size.
REFERENCES:
patent: 3785779 (1974-01-01), Li et al.
patent: 4233269 (1980-11-01), Kaye et al.
patent: 5395857 (1995-03-01), Berg et al.
patent: 5985135 (1999-11-01), Gupta
patent: 6013845 (2000-01-01), Allan et al.
patent: 6033635 (2000-03-01), Gammill
patent: 6086749 (2000-07-01), Kramer et al.
patent: 6258900 (2001-07-01), Glover
patent: 6309553 (2001-10-01), Lanting et al.
patent: 6554994 (2003-04-01), Reynolds et al.
patent: WO 00/50372 (2000-08-01), None
Belfadhel Hatem
de Winne Monique I. R.
Duchanoy Corinne
Goedmakers Jan-Willem
Schlarmann Eduard Hendricus
Boykin Terressa
General Electric Company
LandOfFree
Process for producing dihydroxy compounds using upflow... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for producing dihydroxy compounds using upflow..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing dihydroxy compounds using upflow... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3644839