Method for preparing polyether glycols

Details Method for preparing polyether glycols Method for preparing polyether glycols

1977-11-09

1978-11-28

Anderson, Harold D.

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

Synthetic resins

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

528417, 568613, C08G 6510, C08G 6520

Patent

active

041275136

ABSTRACT:
The production of undesirable oligomeric cyclic ethers in the preparation of polyether glycols is reduced by using as a catalyst an acid-activated montmorillonite clay which contains, per gram, 0.1 to 0.9 milliequivalent of hydrogen ions having pK.sub.a values of -3 to -8.

REFERENCES:
patent: 3201197 (1965-08-01), Showalter
patent: 3328467 (1967-06-01), Hamilton
patent: 3412039 (1968-11-01), Miller
patent: 3997563 (1976-12-01), Dale et al.

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