Functionalized cubic liquid crystalline phase materials and methods for their preparation and use
AssigneeThe Procter & Gamble Company
InventorsMatthew Lawrence Lynch, Patrick Thomas Spicer
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Abstract
Functionalized cubic gel precursors, functionalized cubic liquid crystalline gels, dispersions of functionalized cubic gel particles, functionalized cubic gel particles, and methods of preparation and use thereof. The precursors, gels, dispersions, and particles are prepared with hydrotropes that do not detrimentally affect the cubic liquid crystalline structure of the precursors, gels, dispersions, and particles. The precursors, gels, dispersions, and particles can be used to deliver active ingredients to substrates.
Claims20
A cubic liquid crystalline phase precursor comprising:
- (A) a hydrotrope,
- (B) an amphiphile capable of forming a cubic liquid crystalline phase,
- (C) an optional solvent, and
- (D) an additive selected from the group consisting of an anchor, a tether, and combinations thereof,
- wherein (A), (B), (C), and (D) are present in mass fractions relative to each other such that
- 1.0a+b+c+d
- wherein a is the mass fraction of (A), b is the mass fraction of (B), c is the mass fraction of (C), and d is the mass fraction of(D), and wherein 1.0>a>0, 1.0>b>0, 1.0>c ≧0, 1.0>d>0;
- and with the proviso that a, b, c, and d do not fall within a cubic liquid crystalline phase region on a phase diagram representing phase behavior of (A), (B), (C), and (D).
A bulk cubic liquid crystalline gel comprising:
- (A) a hydrotrope,
- (B) an amphiphile capable of forming a cubic liquid crystalline phase,
- (C) a solvent, and
- (D) an additive selected from the group consisting of an anchor, a tether, and combinations thereof,
- wherein ingredients (A), (B), (C), and (D) are present in mass fractions relative to each other such that
- 1.0=a+b+c+d
- wherein a is the mass fraction of ingredient (A), b is the mass fraction of ingredient (B), c is the mass fraction of ingredient (C), and d is the mass fraction of ingredient (D), and wherein 1.0>a>0, 1.0>b>0, 1.0>c>0, 1.0>d>0;
- and with the proviso that a, b, c, and d fall within a cubic liquid crystalline phase region on a phase diagram representing phase behavior of ingredients (A), (B), (C), and (D).
A disperison of cubic liquid crystalline gel particles comprising:
- (A) a hydrotrope,
- (B) an amphiphile capable of forming a cubic liquid crystalline phase,
- (C) a solvent, and
- (D) an additive selected from the group consisting of an anchor, a tether, and combinations thereof,
- wherein ingredients (A), (B), (C), and (D) are present in mass fractions relative to each other such that
- 1.0=a+b+c+d
- wherein a is the mass fraction of ingredient (A), b is the mass fraction of ingredient (B), c is the mass fraction of ingredient (C), and d is the mass fraction of ingredient (D), and wherein 1.0>a>0, 1.0>b>0, 1.0>c>0, 1.0>d>0;
- and with the proviso that a, b, c, and d fall within a region representing cubic liquid crystalline phase in combination with at least one other phase on a phase diagram representing phase behavior of ingredients (A), (B), (C), and (D), with the proviso that the dispersion has a form of functionalized cubic liquid crystalline gel particles dispersed in the other phase.
Dependencies are inferred from the claim text.