Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From heterocyclic reactant containing as ring atoms oxygen,...
Patent
1984-12-14
1986-01-14
Nielsen, Earl
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From heterocyclic reactant containing as ring atoms oxygen,...
528417, 560240, 568617, C08G 6520
Patent
active
045646716
ABSTRACT:
Polyoxybutylene polyoxyalkylene glycols are prepared by copolymerization of tetrahydrofuran with a 1,2-alkylene oxide in the presence of a compound containing reactive hydrogen, by a continuous process in which the polymerization is carried out in a reactor over a fixed-bed clay catalyst and with recycling of the reaction mixture, and less than 30% by weight, based on the reaction mixture to be recycled, of a mixture of tetrahydrofuran, 1,2-alkylene oxide and a compound containing reactive hydrogen is added to the reaction mixture, which is recycled to the reactor after flowing through the latter.
REFERENCES:
patent: 4127513 (1978-11-01), Bellis
patent: 4189566 (1980-02-01), Mueller et al.
patent: 4192943 (1980-03-01), Robinson
patent: 4228272 (1980-10-01), Del Pesco
patent: 4303782 (1981-12-01), McHale et al.
Ullmann's Enzyklopadie der technischen chemie, 3rd ed., vol. IV, pp. 541-545.
BASF - Aktiengesellschaft
Nielsen Earl
Shurtleff John H.
LandOfFree
Continuous preparation of polyoxybutylene polyoxyalkylene glycol does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Continuous preparation of polyoxybutylene polyoxyalkylene glycol, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Continuous preparation of polyoxybutylene polyoxyalkylene glycol will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-431353