C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
134/43, 260/647.
C07C 43/13 (2006.01) B01F 17/00 (2006.01) B01F 17/42 (2006.01) C08G 65/06 (2006.01) C08G 65/26 (2006.01)
Patent
CA 1196024
ABSTRACT New polyether derivatives obtained by gradually adding at temperatures between 100 and 200°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: Image wherein R1 represents an aliphatic hydrocarbon radical containing 1 to 3 carbon atoms; R2 represents an aliphatic hydrocarbon radical containing 8 to 30 carbon atoms; m = 10 - 50 (mean value); n = 0 - 10 (mean value). p = 1 - 10 (mean value). The derivatives are suitable emulsifiers in emulsions particularly in water-in-oil emulsions.
422737
Akzona Incorporated
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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