Polyether derivatives, their use as emulsifiers, and emulsions c

Details Polyether derivatives, their use as emulsifiers, and emulsions c Polyether derivatives, their use as emulsifiers, and emulsions c

1983-02-28

1984-10-30

Lovering, Richard D.

Compositions

Inorganic luminescent compositions

Tungsten containing

252312, 252351, 252DIG1, 424170, B01J 1300, B01F 1742

Patent

active

044798873

ABSTRACT:
New polyether derivatives obtained by gradually adding at temperatures between 100.degree. and 200.degree. C. a long-chain 1,2-epoxide having a chain length of 10 to 32 carbon atoms to either (1) polyethylene glycol monoalkyl ether whose mean molecular weight is 400 to 2500 and whose alkyl group contains 1 to 3 carbon atoms; or to (2) a polyethylene glycol-polypropylene glycol monoalkyl ether whose mean molecular weight is 450 to 3100, whose recurring ethylene oxide units and propylene oxide units form a block each, the polypropylene glycol block having a mean molecular weight of not more than 600 and whose alkyl group forms the end of the polyethylene glycol block and contains 1 to 3 carbon atoms, using 0.1 to 1% by weight of alkali hydroxide related to the total amount of the starting substances.
These polyether derivatives correspond to the general formula: ##STR1## wherein R.sub.1 represents an aliphatic hydrocarbon radical containing 1 to 3 carbon atoms;

REFERENCES:
patent: 4207421 (1980-06-01), Scardera et al.
patent: 4252540 (1981-02-01), Yamamwa et al.
patent: 4302349 (1981-11-01), Kosswig et al.

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