Polyoxyalkylenediol-.alpha.,.omega.-bisallyl polycarbonate usefu

Details Polyoxyalkylenediol-.alpha.,.omega.-bisallyl polycarbonate usefu Polyoxyalkylenediol-.alpha.,.omega.-bisallyl polycarbonate usefu

1984-02-03

1985-05-21

Anderson, Harold D.

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

Synthetic resins

From reactant having a halogen atom or oxygen single bonded...

525410, 525539, 526314, 528 25, 528 29, 528371, 528425, C08G 6362

Patent

active

045187665

ABSTRACT:
For preparing polyoxyalkylenediol-.alpha.,.omega.-bisallyl policarbonates, diallyl carbonate is reacted in a first reaction stage with a polyoxyalkylenediol having a mol wt between 400 and 4500 in the presence of a transesterification catalyst at a temperature in the neighborhood of 100.degree. C. and under reduced pressures, whereafter, in a second reaction stage, the product as obtained from the first stage is treated at a temperature between 70.degree. C. and 150.degree. C. under reduced pressures, still in the presence of a transesterification catalyst. By so doing, the chain extension of the bisallyl carbonate of the polyoxyalkylenediol is achieved, whereas the unreacted diallyl carbonate coming from the first stage, and that produced in the second stage, are eliminated, and the final reaction product can thus be collected.

REFERENCES:
patent: 4398008 (1983-08-01), Misura

Affiliated with

Also associated with

Rating

Polyoxyalkylenediol-.alpha.,.omega.-bisallyl polycarbonate usefu does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Polyoxyalkylenediol-.alpha.,.omega.-bisallyl polycarbonate usefu, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polyoxyalkylenediol-.alpha.,.omega.-bisallyl polycarbonate usefu will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1539182