Process for the preparation of polycarbonate copolyether polyols

Details Process for the preparation of polycarbonate copolyether polyols Process for the preparation of polycarbonate copolyether polyols

1997-03-17

1998-12-08

Mosley, Terressa

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528198, C08G 6400

Patent

active

058470697

ABSTRACT:
A process is described for the preparation of polycarbonate polyether polyols characterized in that dimethylcarbonate (DMC) and one or more polyether diols are reacted at a ratio DMC/polyether diols of between 0.5 and 1.35, at a temperature of between 130.degree. and 175.degree. C. and in the presence of a catalyst consisting of an oxide, a carbonate or an alcoholate of a metal of the first or second group or a salt or organometallic compound of a metal belonging to the third or fourth or fifth group at a concentration of between 0.0001 and 0.01%.

REFERENCES:
patent: 4518766 (1985-05-01), Greco et al.
patent: 4990578 (1991-02-01), Greco et al.
patent: 5116929 (1992-05-01), Greco et al.
patent: 5288839 (1994-02-01), Greco

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-178164