Back to results
US 8,216,991 B2Granted
Solvent system for microemulsion or protomicroemulsion and compositions using the solvent system
AssigneeThe Procter & Gamble Company
InventorsFreddy Arthur Barnabas, Jennifer Lynn Treadway
Life of this patent
Estimating the term…
Abstract
A solvent system for use in a microemulsion or protomicroemulsion where the solvents are selected to have a Hansen parameter of δd to be from 15 to about 18; of δp to be from 0 to about 8 and of δH to be from 0 to about 12; such that the resulting Hansen parameter of the solvents comprises has a δd of from 15 to about 18; a δp from about 2 to about 8 and a δH of from about 5 to about 12.
Claims9
A microemulsion or protomicroemulsion composition comprising:
- a) a solvent system comprising from about 3 wt % to about 6 wt % of permethyl of the formula:
- wherein n is from 3 to 5, and from about 3 wt % to about 6 wt % 1-phenoxy-2-propanol;
- b) at least about 25%, by weight of the composition, of one or more surfactants selected from the group consisting of anionic, nonionic, cationic, and ampholytic surfactants;
- and
- c) water.
2 more elements
A microemulsion or protomicroemulsion composition comprising:
- a) a solvent system comprising permethyl of the formula:
- wherein n is from 3 to 5, and 1-phenoxy-2-propanol, wherein the permethyl and 1-phenoxy-2-propanol are present in a 1:3 to 3:1 ratio;
- b) at least about 25%, by weight of the composition, of one or more surfactants selected from the group consisting of anionic, nonionic, cationic, and ampholytic surfactants;
- and
- c) water.
2 more elements
Dependencies are inferred from the claim text.