Process for alkylene oxide polymerization

Details Process for alkylene oxide polymerization Process for alkylene oxide polymerization

1986-05-02

1987-05-19

Nielsen, Earl

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

Synthetic resins

From heterocyclic reactant containing as ring atoms oxygen,...

C08G 6512

Patent

active

046670130

ABSTRACT:
The molecular weight of polyalkylene oxides produced by the polymerization of a cyclic oxide in contact with a catalyst comprising the reaction product of a dihydrocarbyl zinc compound and a linear alkanediol in contact with a silica dispersion aid and nonionic surfactant in an inert diluent is controlled by the continuous addition of a very dilute solution of chain transfer agent having a pKa value of from 9 to 22 to the polymerizing mixture during the polymerization reaction at a carefully controlled rate so as not to terminate the polymerization reaction.

REFERENCES:
patent: 3382192 (1968-05-01), Kawamura et al.
patent: 3385800 (1968-05-01), Furukawa et al.
patent: 3639267 (1972-02-01), Vandenberg
Shoichi Asano, et al., J. Chem. Soc., Chem. Commun. 1985, 1148-9.
Bruce and Rabigliati, Polymer (London), 8, 361-367 (1966).

Affiliated with

Also associated with

Rating

Process for alkylene oxide polymerization 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 alkylene oxide polymerization, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for alkylene oxide polymerization will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1565880