Condensation process

Details Condensation process Condensation process

1984-06-07

1985-03-05

Lone, Werren B.

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

Organic compounds

Oxygen containing

568720, 568727, C07C 3912

Patent

active

045032661

ABSTRACT:
In a process for the preparation of phenol-aromatic ketone condensation products by reaction of phenols and ketones in the presence of a gaseous hydrogen halide, the improvement comprising adding in catalytic amounts up to less than molar amounts based on the ketone as an additional condensation agent at least one bivalent, trivalent or tetravalent metal halide, introducing the gaseous hydrogen halide and after termination of the condensation reaction, adding water to the reaction mixture and recovering the purified condensation product and to the novel monomers of 9,9-bis-(4-hydroxyphenyl)-fluorene with a melting point of at least 226.degree. C. and 1,1-bis-(4-hydroxyphenyl)-1-phenylethene with a melting point of at least 189.degree. C. which are useful for the preparation of improved polyester resins.

REFERENCES:
patent: 2429556 (1947-10-01), Longfellow et al.
patent: 3350352 (1967-10-01), Smith et al.
patent: 3457316 (1969-07-01), Gilles
patent: 3485795 (1969-12-01), Gilles

Affiliated with

Also associated with

Rating

Condensation process does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Condensation process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Condensation process will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1735644