Biodegradable, alkali stable, non-ionic surfactants
Stabilizer for mixture fuels
Adducts of alcohols and olefin oxides, suitable for reducing the interfacial surface tension of oily phases with respect to water Patent #: 4302349
ApplicationNo. 06/470900 filed on 02/28/1983
US Classes:516/30, The compound contains repeating -(OCnH2n)- (i.e., repeating unsubstituted oxyalkylene)510/417, Plural immiscible liquid phases (e.g., emulsion, oily and aqueous layers, etc.)510/506, Ether514/938, Oil-water type516/76The compound contains repeating -(OCnH2n)- (i.e., repeating unsubstituted oxyalkylene)
ExaminersPrimary: Lovering, Richard D.
Assistant: Brookes, Anne
Attorney, Agent or Firm
International ClassesB01F 17/00 (20060101)
C08G 65/00 (20060101)
C08G 65/06 (20060101)
C08G 65/26 (20060101)
Foreign Application Priority Data1982-03-03 DE
AbstractNew 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: ##STR1## 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.