Process for preparing colorless hydroxyl epihalohydrin polymers

Details Process for preparing colorless hydroxyl epihalohydrin polymers Process for preparing colorless hydroxyl epihalohydrin polymers

1982-05-06

1983-07-05

Nielsen, Earl A.

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

Synthetic resins

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

528409, 528421, 528488, 568614, C08G 6524, C08G 6528, C08G 6530

Patent

active

043919707

ABSTRACT:
In a process for the polymerization of an epihalohydrin wherein the catalyst (initiator) employed is a trialkyl oxonium salt of an HMF.sub.6 acid wherein M is a Group V element selected from the group consisting of phosphorus, arsenic and antimony, and the polymerization is conducted in the presence of controlled amounts of water or a polyol to obtain hydroxyl containing low molecular weight polymers, a colorless polymer is obtained when the reaction product is washed with an aqueous solution of an alkal metal carbonate.

REFERENCES:
patent: 3850856 (1974-11-01), Dreyfuss
patent: 3850857 (1974-11-01), Dreyfuss
patent: 4067911 (1978-01-01), Walraevens et al.
patent: 4072638 (1978-02-01), Boulet et al.

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