Process for the preparation of 4,4'-dihydroxydiphenyl ether

Details Process for the preparation of 4,4'-dihydroxydiphenyl ether Process for the preparation of 4,4'-dihydroxydiphenyl ether

1986-09-12

1987-06-23

Helfin, Bernard

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

Organic compounds

Oxygen containing

C07C 4109, C07C 4140, C07C 43295

Patent

active

046754571

ABSTRACT:
The invention relates to a process for the preparation of 4,4'-dihydroxydiphenyl ether by dehydration of hydroquinone using sulfonic acids or sulfuric acid as catalysts at elevated temperatures. The dehydration product is stirred with an excess of water at 80.degree. to 110.degree. C. The higher condensed byproducts which are undissolved during this are separated off, and the ether desired is allowed to crystallize out of the filtrate obtained.

REFERENCES:
patent: 2739171 (1956-03-01), Linn
patent: 3236809 (1966-02-01), Goldberg et al.
patent: 3290386 (1966-12-01), Stamatoff
patent: 3375297 (1968-03-01), Barth et al.
patent: 3886218 (1975-05-01), Biller et al.

Affiliated with

Also associated with

Rating

Process for the preparation of 4,4'-dihydroxydiphenyl ether 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 the preparation of 4,4'-dihydroxydiphenyl ether, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of 4,4'-dihydroxydiphenyl ether will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-722680