Use of a chelating agent in a surfactant composition to provide transparency and/or to substantially prevent discolouration, wherein the chelating agent comprises at least one aminopolycarboxylic acid or a salt thereof.

Use of a chelating agent in a surfactant composition to provide transparency and/or to substantially prevent discolouration, wherein the chelating agent comprises at least one aminopolycarboxylic acid or a salt thereof.

The present invention is concerned with a reactive surfactant composition for emulsion polymerization, which is able to micronize the particle diameter of a polymer emulsion and to reduce the addition amount of the reactive surfactant composition to be used.

The reactive surfactant composition for emulsion polymerization of the present invention contains a reactive anionic surfactant (component A) represented by the following formula (I), the component A being satisfied with the following requirement R:

##STR00001## wherein AO represents an alkyleneoxy group having a carbon number of 3 or more and 18 or less; EO represents an ethyleneoxy group; p represents an integer of 1 or more and 15 or less; m represents an integer of 0 or more; n represents an integer of 0 or more; W represents a hydrogen ion or a cation; and plural kinds of AOs may coexist.

Requirement R: An average addition molar number m of AO is a number of 1 or more and 50 or less; an average addition molar number n of EO is a number of 0 or more and 200 or less; and when in the component A, a component having an addition molar number of AO of (m3) or less is defined as (component A-1), and a component having an addition molar number of AO of (m+2) or more is defined as (component A-2), X in the following formula (I) is less than 30, provided that when m is less than 3, (m=0) is defined as (component A-1):

X={(molar number of component A-1)+(molar number of component A-2)}(molar number of component A)100(I).

Aqueous dispersion of paraffine inhibitors, comprising a continuous aqueous phase comprising water and a water-miscible organic solvent, a dispersed phase comprising at least one paraffin inhibitor component, and at least one anionic surfactant, methods of manufacturing such aqueous dispersions, and the use of such aqueous dispersions as paraffin inhibitor or pour point depressant for crude oil or other hydrocarbon fluids, such as fuel oils or diesel.

A surfactant composition for a foamed sand including 80 to 99.8 mass % of a compound (A) represented by formula (1); 0.1 to 10 mass % of a compound (B) represented by formula (2); and 0.1 to 10 mass % of an amphoteric surfactant (C):
R.sup.1O-(EO).sub.nSO.sub.3M.sup.1(1)
wherein R.sup.1 represents a hydrocarbon group having 6 to 22 carbons, EO represents oxyethylene group, n is 1 to 10, and M.sup.1 represents an alkali metal, an alkaline earth metal, ammonium or an organic ammonium;
R.sup.2OSO.sub.3M.sup.2(2)
wherein R.sup.2 represents a hydrocarbon group having 6 to 22 carbons, and M.sup.2 represents an alkali metal, an alkaline earth metal, ammonium or an organic ammonium.

A surfactant composition for a foamed sand including 80 to 99.8 mass % of a compound (A) represented by formula (1); 0.1 to 10 mass % of a compound (B) represented by formula (2); and 0.1 to 10 mass % of an amphoteric surfactant (C):
R.sup.1O-(EO).sub.nSO.sub.3M.sup.1(1)
wherein R.sup.1 represents a hydrocarbon group having 6 to 22 carbons, EO represents oxyethylene group, n is 1 to 10, and M.sup.1 represents an alkali metal, an alkaline earth metal, ammonium or an organic ammonium;
R.sup.2OSO.sub.3M.sup.2(2)
wherein R.sup.2 represents a hydrocarbon group having 6 to 22 carbons, and M.sup.2 represents an alkali metal, an alkaline earth metal, ammonium or an organic ammonium.

Compositions and methods for dispersing metal sulfates are provided. A method for dispersing metal sulfates includes providing a mineral ore; contacting an acidic leaching solution with the mineral ore; adding a dispersion additive to the mineral ore and/or leaching solution to disperse the metal sulfates therein, wherein the dispersion additive is chosen from a water-soluble aromatic surfactant, a lignosulfonate, a naphthalene sulfonate, and combinations thereof.

Compositions and methods for dispersing metal sulfates are provided. A method for dispersing metal sulfates includes providing a mineral ore; contacting an acidic leaching solution with the mineral ore; adding a dispersion additive to the mineral ore and/or leaching solution to disperse the metal sulfates therein, wherein the dispersion additive is chosen from a water-soluble aromatic surfactant, a lignosulfonate, a naphthalene sulfonate, and combinations thereof.

The present disclosure relates to a surfactant-containing preparation comprising one or more alcohols and one or more anionic surfactants, wherein the preparation is an O/W emulsion, the particle size distribution for which the following applies: D(v, 0.9)=40 m or less, and wherein the total quantity of the one or more alcohols in the preparation is selected in such a way that the preparation, compared to a comparison preparation which having an otherwise identical composition does not comprise any alcohol of the formula (I), has an increased viscosity at 22.7 C. Also disclosed are methods for producing the preparation and methods for increasing stability and/or viscosity of an emulsion. ##STR00001##

The present invention provides a material that has a good compatibility with monomers and can be used as dispersing agent even after a period of not shorter than one week since the preparation of the dispersion. The dispersion of the present invention comprising metal oxide particles with an average primary particle diameter of not more than 50 nm; an organic acid; a dispersion medium; and an organophosphorus compound represented by formula (1) or an organosulfur compound represented by formula (2).