Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
PRODUCTION OF BISPHENOL F
Document Type and Number:
Japanese Patent JPH09255606
Kind Code:
A
Abstract:

To provide a method for producing bishenol F excellent in purity and quality, by which an after treatment of the reaction of phenol with formaldehyde for producing bisphenol F can be simplified.

In the production of bisphenol F by using oxalic acid or phosphoric acid as a catalyst, distillation for recovering phenol and purifying distillation for removing scarcely remaining phenol are carried out at temperatures in the range of 120-160°C in the presence of the acidic catalyst which has not been deactivated completely or partially after the reaction of phenol with formaldehyde. Under the conditions, bisphenol F is not decomposed, accordingly the purity of the bisphenol F is not lowered and the deactivation process of the acidic catalyst is simplified or omitted. Thus, pure bisphenol F excellent in quality is obtained with a simpler pretreatment.


Inventors:
OKIHAMA MARIKO
KUNITAKE YUJI
Application Number:
JP7214496A
Publication Date:
September 30, 1997
Filing Date:
March 27, 1996
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
DAINIPPON INK & CHEMICALS
International Classes:
B01J27/16; B01J31/04; C07B61/00; C07C37/20; C07C37/74; C07C39/16; (IPC1-7): C07C39/16; B01J27/16; B01J31/04; C07C37/20; C07C37/74
Attorney, Agent or Firm:
Takahashi victory



 
Previous Patent: PRODUCTION OF BISPHENOL A

Next Patent: PRODUCTION OF BISPHENOL A