Ether alcohols used as solvents and emulsifiers and dispersions containing said ether alcohols
Ether alcohols of the general formula (I) R 1 —O-[EO—] n [PO—] m R 2 where R 1 is C 1-4 -alkyl, R 2 is hydrogen or C 1-4 -alkyl, n is on average 1 to 100, m is on average 0 to n/2 EO, PO are basic building blocks derived from ethylene oxide and propylene oxide, which may be present in any order if both building blocks are present, are used as solvents, solubility promoters or dispersion auxiliaries for organic compounds which are insoluble or insufficiently soluble in lipophilic and hydrophilic media, and as dispersion auxiliaries or continuous phase for (micro)pigment dispersions.
1 - 14 . (canceled)
15 . A solution of organic compounds which are insoluble or insufficiently soluble in lipophilic and hydrophilic media in ether alcohols of the general formula (I)
R 1 —O-[EO—] n H (I)
where
R 1 is C 1-3 -alkyl,
n is on average 7 to 15,
EO is building blocks derived from ethylene oxide.
16 . A dispersion of (micro)pigments and/or insoluble organic compounds in ether alcohols of the general formula (I)
R′—O-[EO—] n H (I)
where
R 1 is C 1-3 -alkyl,
n is on average 7 to 50,
EO is building blocks derived from ethylene oxide.
17 . An ether alcohol/polyol-in-oil emulsion comprising at least one ether alcohol of the general formula (I)
R 1 —O-[EO—] n H (I)
where
R 1 is C 1-3 -alkyl,
n is on average 7 to 15,
EO is building blocks derived from ethylene oxide, in an oil-immiscible ether alcohol/polyol phase, an oil phase and at least one emulsifier.
18 . The emulsion as claimed in claim 17 , characterized in that, in the general formula (I), R 1 is C 1-2 -alkyl, and n is on average 8 to 15.
19 . The emulsion as claimed in claim 17 , characterized in that the ether alcohol is a methanol ethoxylate with 7 to 13 ethylene oxide units.
20 . The emulsion as claimed in claim 17 , characterized in that at least 50% by weight of ether alcohol is present in the ether alcohol/polyol phase.
21 . The emulsion as claimed in claim 17 , characterized in that the ether alcohol/polyol phase comprises a cosmetic and/or pharmaceutical and/or agrochemical active ingredient dissolved in the phase.
22 . A method of preparing emulsions as claimed in claim 17 , characterized in that the ether alcohol/polyol phase and the oil phase, which may each comprise emulsifier, are heated separately to a temperature in the range from 20 to 90° C. and then combined with stirring.
23 . An ether alcohol/polyol-in-oil-water emulsion comprising at least one emulsion as claimed in claim 17 and additionally at least one aqueous phase.
24 . A cosmetic and/or pharmaceutical and/or agrochemical active ingredient composition comprising at least one emulsion as claimed in claim 17 .
25 . A sunscreen composition comprising
10 to 80% by weight of at least one ether alcohol, as is defined in claim 17 ,
5 to 50% by weight of at least one (micro)pigment,
5 to 50% by weight of at least one organic light protection filter and, if appropriate, further customary ingredients, where the total weight is 100% by weight.