Synthetic detergent formulations
Synthetic detergent formulations are made by spray drying an aqueous dispersion or emulsion of a synthetic detergent and a hydrophobic plasticiser and optionally a filler to produce a particulate product. In particular the synthetic detergent includes mild surfactants such a fatty isethionate or sulphosuccinate surfactants. By spray drying the emulsion or dispersion, a particularly uniform product is made which can readily be formed into synthetic detergent bars which may include soap to form combination bar products (combi-bars).
1. A detergent material comprising:
a) a synthetic detergent comprising at least one fatty isethionate foaming surfactant; and
b) a hydrophobic plasticizer having a softening point from ambient temperature to 90° C.;
wherein the amount of said synthetic detergent is from 55 to 80 wt. %, and the amount of said hydrophobic plasticizer is from 20 to 45 wt. % relative to the total combined weight of a and b, in substantially homogeneous dispersion and having a weight average particle size of from 50 μm to 1200 μm, in free flowing non-dusting particulate form.
2. The detergent material as claimed in claim 1 , wherein the weight average particle size is from 150 μm to 1200 μm.
3. The detergent material as claimed in claim 1 , wherein the weight average particle size is from 50 μm to 250 μm.
4. The detergent material as claimed in claim 1 , wherein the weight average particle size is from 200 μm to 750 μm.
5. The material as claimed in claim 1 , wherein the synthetic detergent further comprises one or more anionic suffactants selected from the group consisting of alkyl sulphates, alkyl sulphonates, alkyl ether sulphates, alkyl glycerol ether suiphonates, alkyl phosphate esters, ethoxylated alkyl phosphate esters, sarcosinates, taurate derivatives, alkyl sulphoacetates, hydroxy alkyl sulphonate esters, alkyl sulphosuccinates, alkyl ether sulphosuccinates, alkyl sulphosuccinamates, and acyl glutamates.
6. The material as claimed in claim 1 , wherein the synthetic detergent further comprises at least one sulphosuccinate salt.
7. The material as claimed in claim 1 , wherein the synthetic detergent further comprises one or more non-ionic surfactants selected from the group consisting of alkyl polysaccharides, sorbitan ester alkoxylates, glucamide surfactants, alcohol alkoxylate surfactants, and carboxylic acid ethoxylates.
8. The material as claimed in claim 1 , wherein the hydrophobic plasticiser is selected from the group consisting of one or more C 12 to C 22 fatty acids, C 14 to C 22 fatty alcohols, paraffin wax, hydrogenated castor oil, and jojoba wax.
9. The material as claimed in claim 1 , which further comprises a filler.
10. A method of making bars of synthetic detergent materials comprising forming a synthetic detergent material in particulate form as claimed in claim 1 .
11. A personal care synthetic detergent cleansing bar product that has been made from a synthetic detergent material in particulate form as claimed in claim 1 .
12. A detergent material comprising:
a) a synthetic detergent comprising at least one fatty isethionate foaming surfactant; and
b) a hydrophobic plasticizer selected from the group consisting of C 12 to C 22 fatty acid, C 1, to C 22 fatty alcohol, paraffin wax, hydrogenated castor oil and jojoba wax;
wherein the amount of said synthetic detergent is from 55 to 80 wt. %, and the amount of said hydrophobic plasticizer is from 20 to 45 wt. % relative to the total combined weight of a and b, present in substantially homogeneous dispersion and having a weight average particle size of from 50 μm to 250 μm, in free flowing non-dusting particulate form.
13. The material as claimed in claim 12 , wherein the synthetic detergent further comprises at least one sulphosuccinate salt.
14. The detergent material as claimed in claim 12 , further comprising a filler.
15. A method of making bars of synthetic detergent materials comprising forming a synthetic detergent material in particulate form as claimed in claim 12 .
16. A personal care synthetic detergent cleansing bar product that has been made from a synthetic detergent material in particulate form as claimed in claim 12 .
17. A detergent material comprising:
a) a synthetic detergent selected from the group consisting of alkyl sulphates, alkyl sulphonates, alkyl ether sulphates, alkyl glycerol ether sulphonates, alkyl phosphate esters, ethoxylated alkyl phosphate esters, sarcosinates, taurate derivatives, alkyl sulphoacetates, hydroxy alkyl sulphonate esters, alkyl sulphosuccinates, alkyl ether sulphosuccinates, alkyl sulphosuccinamates, and acyl glutamates; and
b) a hydrophobic plasticizer having a softening point from ambient temperature to 90° C.;
wherein the amount of said synthetic detergent is from 55 to 80 wt. %, and the amount of said hydrophobic plasticizer is from 20 to 45 wt. % relative to the total combined weight of a and b, present in substantially homogeneous dispersion and having a weight average particle size of from 200 μm to 750 μm, in free flowing non-dusting particulate form.
18. The material as claimed in claim 17 , which further comprises a filler.
19. A method of making bars of synthetic detergent materials comprising forming a synthetic detergent material in particulate form as claimed in claim 17 .
20. A personal care synthetic detergent cleansing bar product that has been made from a synthetic detergent material in particulate form as claimed in claim 17 .