Process for continuous production of polycarbonate oligomer

Details Process for continuous production of polycarbonate oligomer Process for continuous production of polycarbonate oligomer

1992-07-15

1993-09-28

Anderson, Harold D.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528202, C08G 6424

Patent

active

052487547

ABSTRACT:
The present invention provides a process for producing a polycarbonate oligomer continuously, which comprises feeding (a) an aqueous alkali solution of a dihydric phenol and (b) phosgene into a tower type reactor from the bottom to react them in the reactor without using any organic solvent and discharging the reaction mixture from the top of the reactor. According to this process, an oligomer giving a polycarbonate of stable quality can be produced using a simple apparatus.

REFERENCES:
patent: 4089888 (1978-05-01), Tokumitsu et al.
patent: 4122112 (1978-10-01), Koda et al.
patent: 4601858 (1986-07-01), Shannon et al.
patent: 4767840 (1988-08-01), Shannon et al.

Affiliated with

Also associated with

Rating

Process for continuous production of polycarbonate oligomer 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 continuous production of polycarbonate oligomer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for continuous production of polycarbonate oligomer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2191721