초록 ▼

This invention relates to an anionic alkoxylate surfactant of formula (I), where R is a di- or tri-unsaturated C4-22straight or branched hydrocarbon chain, at least two double bonds of said unsaturated chain being conjugated and exhibiting opposite geometric isomerism; m is 0 or 1; Y is O or NR'; ea

This invention relates to an anionic alkoxylate surfactant of formula (I), where R is a di- or tri-unsaturated C4-22straight or branched hydrocarbon chain, at least two double bonds of said unsaturated chain being conjugated and exhibiting opposite geometric isomerism; m is 0 or 1; Y is O or NR'; each R' is independently selected from hydrogen, C1-6alkyl and phenyl; n is 1 to 50; and OX is an anionic group selected from the group consisting of acids or salts of sulfate, phosphate, sulphosuccinate, succinate, carbomethyl, maleate, carboxyethyl, alkenylsuccinate, phthalate, sulphoethyl, 3-sulpho-2-hydroxypropyl, sulphopropyl, oxalate and citrate.

대표청구항 ▼

1. An aqueous dispersion of polymeric particles wherein the dispersion is formed in the presence of a stabilising amount of an anionic alkoxylate surfactant of the formula I wherein R is a di- or tri-unsaturated C4-22straight or branched hydrocarbon chain, at least two double bonds of said unsatur

1. An aqueous dispersion of polymeric particles wherein the dispersion is formed in the presence of a stabilising amount of an anionic alkoxylate surfactant of the formula I wherein R is a di- or tri-unsaturated C4-22straight or branched hydrocarbon chain, at least two double bonds of said unsaturated chain being conjugated and exhibiting opposite geometric isomerism; M is 0 or 1; Y is O or NR'; each R' is independently selected from hydrogen, C1-6alkyl and phenyl; n is 1 to 50; and OX is an anionic group selected from the group consisting of acids or salts of sulphate, succinate, carboxymethyl, maleate, carboxyethyl, alkenylsuccinate, phthalate, sulphoethyl, 3-sulpho-2-hydroxyropyl, sulphopropyl, oxalate and citrate. 2. An aqueous disperison according to claim 1 wherein the dispersion of polymeric particles is prepared by addition polymerization of addition polymerizable monomer. 3. An aqueous dispersion according to claim 2 wherein the addition polymerizable monomer is an ethylenically unsaturated monomer. 4. An aqueous dispersion according to claim 3 where the ethylenically unsaturated monomer is selected from the group consisting of C1--C12alkyl acrylates and methacrylates, (meth)allyl acrylates and methacrylates, butyl methacrylate, stearyl methacrylate, methacrylic acid, methoxypropyl methacrylate, cyclohexyl methacrylate, benzyl methacrylate, hydroxyethyl methacrylate, hydroxypropyl methacrylate, dimethylaminoethyl methacrylate, N-butoxymethyl methacrylamide, N-butoxymethyl acrylamide, glycidyl methacrylate, vinyl acetate, vinyl propionate, styrene and vinyl styrene, vinyl toluene, methoxy styrene and vinyl pyridine, di-butyl maleate and vinyl chloride. 5. An aqueous dispersion according to claim 1 wherein the dispersion of polymeric particles is prepared by dispersion of a condensation polymer. 6. An aqueous disperison according to claim 1 wherein R has the following structure: CH3--(CH2)13-K--CH=CH--CH=CH--(CH2)K-- wherein K is 8 or 9. 7. A surfactant according to claim 1 wherein R is derived from linoleyl or linolenyl alcohol or acid by alkoxylation of said alcohol or acid. 8. An aqueous dispersion according to claim 1 wherein at least one R' on the or each --(CHR'--CHR'--O)-- unit is hydrogen. 9. An aqueous dispersion according to claim 8 wherein both R' on the or each --(CHR'--CHR'--O)-- unit are hydrogen. 10. An aqueous dispersion according to claim 1 where OX is sulphate, carboxymethyl or a salt thereof. 11. An aqueous dispersion according to claim 10 wherein the salt is an amine, ammonium or alkali metal salt. 12. An aqueous dispersion according to claim 1 where R is C10-C22. 13. An aqueous dispersion according to claim 1 where m is 0. 14. An aqueous dispersion according to claim 1 where Y is O. 15. A method for preparing a coating composition comprising adding an aqueous dispersion according to claim 1 to a coating composition mixture. 16. A method for preparing an aqueous dispersion of polymeric particles comprising conducting an addition or condensation polymerization in the presence of a stabilizing amount of an anionic alkoxylate surfactant of the formula I where R is a di- or tri-unsaturated C4-22straight or branched hydrocarbon chain, at least two double bonds of said unsaturated chain being conjugated and exhibiting opposite geometric isomerism; M is 0 or 1; Y is O or NR'; each R' is independently selected from hydrogen, C1-6alkyl and phenyl; n is 1 to 50; and OX is an anionic group selected from the group consisting of acids or salts of sulphate, succinate, carboxymethyl, maleate, carboxyethyl, alkenylsuccinate, phthalate, sulphoethyl, 3-sulpho-2-hydroxyropyl, sulphopropyl, oxalate and citrate.