Intimate care lubricant compositions and methods for making same
AssigneeChemsil Silicones, Inc.
InventorDuane Krzysik
Life of this patent
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Abstract
Silicone-in-water emulsions and methods for making same, are disclosed which are useful and effective as lubricants for use in intimate care applications, as a skin condition, as a surgical lubricant and/or as a carrier for an active topical pharmaceutical agent. In preferred examples, the emulsions of the present invention are flowable, have a viscosity of equal to or below about 15,000 centipoise (cP), and are stable upon storage for at least about 1 year.
Claims31
A method of making a low-viscosity, substantially clear or translucent lubricant composition comprising:
- a) slowly adding water with gentle mixing to a silicone lubricant, at least one non-ionic surfactant component, and a hydrophilic rheology modifier to form a water-in-silicone emulsion;
- b) combining water and a glycol with the viscous water-in-silicone emulsion with mixing for a sufficient time to invert the viscous water-in-silicone emulsion to a silicone-in-water emulsion, thereby forming a stable, low viscosity, silicone-in-water lubricant composition;
- and
- c) optionally adding an effective amount of a refractive index (RI) adjustment agent (“RIAA”) to the low viscosity, clear silicone-in-water lubricant emulsion composition to obtain a substantially clear or translucent emulsion.
5) (canceled)
10-12. (canceled)
13) The method of claim 12, wherein said one non-ionic surfactant component comprises a first ethoxylated lauryl alcohol, containing 4 ethylene glycol units;
- and a second ethoxylated lauryl alcohol containing 23 ethylene glycol units.
15) (canceled)
17-18. (canceled)
21) A low-viscosity, substantially clear or translucent silicone-in-water emulsion composition comprising an amount of water and,
- about 0.1% to about 1% by weight of a rheology modifier,
- about 1% to about 6% by weight of a non-ionic surfactant component;
- about 15% to about 60% by weight of one or more silicone lubricants present in a water-immiscible silicone phase;
- and
- an amount of one or more water-miscible refractive index (RI) adjusting agent (“RIAA”) sufficient to render the composition substantially clear or translucent;
- the low-viscosity, substantially clear or translucent silicone-in-water emulsion composition being effective as a lubricant suitable for use in intimate care applications.
23) (canceled)
25) (canceled)
26) A low-viscosity, substantially clear or translucent silicone-in-water emulsion comprising a water phase and a water-immiscible silicone phase, comprising:
- about 15% to about 60% by weight of one or more silicone lubricants;
- about 1% to about 6% by weight of at least one non-ionic surfactant;
- about 0.1% to about 0.8% by weight of a rheology modifier component;
- a sufficient quantity of one or more water-soluble RIAA other than water to cause the refractive index of the water phase to substantially match the refractive index of the silicone phase of the composition;
- and
- water in a sufficient quantity so that the composition totals 100% by weight, the composition being suitable for use as a lubricant in one or more intimate care applications.
27 The emulsion of claim 26 wherein the sufficient quantity of one or more RIAA is in the range of about 10% to about 40% by weight of the composition.
29-30. (canceled)
Dependencies are inferred from the claim text.