Adjustment of the average molecular weight of polyoxyalkylene gl

Details Adjustment of the average molecular weight of polyoxyalkylene gl Adjustment of the average molecular weight of polyoxyalkylene gl

1993-08-20

1995-03-07

Dees, Jose G.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

C07C 6902

Patent

active

053959590

ABSTRACT:
The average molecular weight of polyoxyalkylene glycols and polyoxyalkylene glycol derivatives is adjusted in the heteropolyacid-catalyzed polymerization of cyclic ethers and/or acetals with ring cleavage in the presence of proton donors by a process in which the amount of the relevant proton donor present in the reaction system is regulated in the course of the reaction by the measurement of the electrical conductivity.

REFERENCES:
patent: 4568775 (1986-02-01), Aoshima et al.
patent: 5099074 (1992-01-01), Mueller et al.

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