Oil-in-water emulsions
AssigneeClariant GmbH
InventorsGerhard Frisch, Zoltan Damo
Life of this patent
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Abstract
The present invention relates to oil-in-water emulsions containing 0.001-70% by weight of at least one active substance from the group consisting of phosphates, thiophosphates and/or carbamates, 0.001-30% by weight of one or more surfactant compounds from the group consisting of nonionic surfactant compounds or phosphorylated surfactant compounds or sulfated surfactant compounds or sulfonated surfactant compounds, and also, if desired, adjuvants, and, water to make up 100% by weight.
Claims20
An oil-in-water emulsion which is essentially free from organic solvents and essentially free of glycerol and contains one or more active substances and one or more surfactant compounds, comprising:
- as an active substance, 0.001-70% by weight of a phosphate, a thiophosphate, a carbamate or a mixture thereof;
- as a surfactant, 0.001-30% by weight of at least one nonionic surfactant having structural formula I or at least one sulfonated surfactant having structural formula IV, or nonionic and sulfonated surfactants of the structural formulas I and IV, said structural formulas I and IV being:
- ##STR13## in which R.sup.1 and R.sup.1d are C.sub.1 -C.sub.24 -alkyl, C.sub.2 -C.sub.24 -alkenyl, C.sub.5 -C.sub.24 -cycloalkyl, (C.sub.1 -C.sub.12 -alkyl).sub.3 -phenyl, C.sub.6 -C.sub.36 -heteroaryl, or C.sub.6 -C.sub.48 -heteroalkaryl,
- x, x3, z and z3 independently of one another are a number from 0 to 300,
- y and y3 are a number from 0 to 200, with the proviso that the sum of x, y and z or x3, y3 and z3 is a number greater than zero,
- R.sup.2d is hydrogen, an alkali metal cation, one equivalent of an alkaline earth metal cation, ammonium, mono-, di- or tri-(C.sub.1 -C.sub.12)alkylammonium or mono-, di- or tri(C.sub.1 -C.sub.12)alkanolammonium and
- n is a number from 1 to 3.
An oil-in-water emulsion which is essentially free of organic solvents and essentially free of glycerol and contains one or more active substances and one or more surfactant compounds, comprising:
- a continuous aqueous phase, and dispersed therein, 0.001-70% by weight of an oil phase, said oil phase consisting essentially of an active substance, liquid at room temperature, which is in the form of finely divided droplets and is a phosphate, a thiophosphate, a carbamate, or a mixture thereof, a surfactant composition consisting essentially of a compound or compounds of only one of the following four structural formulas:
- ##STR14## in which R.sup.1, R.sup.1b, R.sup.1c and R.sup.1d are hydrogen, C.sub.1 -C.sub.24 -alkyl, C.sub.2 -C.sub.24 -alkenyl, C.sub.2 -C.sub.24 -alkynyl, C.sub.5 -C.sub.24 -cycloalkyl, (C.sub.1 -C.sub.12 -alkyl).sub.3 -phenyl, C.sub.6 -C.sub.36 -heteroaryl or C.sub.6 -C.sub.48 heteroalkaryl, or
- R.sup.1b is a radical of the formula V ##STR15## R.sup.1c is a radical of the formula VI ##STR16## R.sup.2, R.sup.2c, R.sup.2c' and R.sup.2d are hydrogen, an alkali metal cation, one equivalent of an alkaline earth metal ion, ammonium, mono-, di- or tri-(C.sub.1 -C.sub.12)alkylammonium or mono-, di- or tri(C.sub.1 -C.sub.12)alkanolammonium,
- R.sup.3 is defined in the same manner as R.sup.2 through R.sup.2d or is the square-bracketed expression of said formula II, i.e. ##STR17## n is a number from 1 to 3, x, x1, x2, x3, z, z1, z2 and z3 independently of one another are a number from 0 to 300,
- y, y1, y2, and y3 are a number from 0 to 200,
- with the proviso that the sum of x, y and z or x1, y1 and z1 or x2, y2 and z2 or x3, y3 and z3 is a number greater than zero, and
- optionally, sufficient water in said aqueous phase and adjuvants to make up 100%.
Dependencies are inferred from the claim text.