Detergent compositions dispersed in personal care products comprising a sorbent carrier
Inventors
Yarlagadda, Travis T. • Moore, Sarah • Zander, Tasha • Nofen, Elizabeth • Mohammed, Saiid • Decker, Gerald • Romaine, Matthew • Proulx, Chris • Stanton, Chelsea
Assignees
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Publication Number
US-8790670-B2
Publication Date
2014-07-29
Expiration Date
Abstract
Detergent compositions and detergent compositions dispersed in personal care products are provided herein. In one embodiment, a detergent composition is provided and comprises a sorbent carrier. The detergent composition also includes a sorbed component including an acid and a surfactant. The sorbed component is sorbed by the sorbent carrier.
Core Innovation
The invention provides detergent compositions that include highly acidic aqueous components and detergent components that are sorbed by a hydrophobic silica sorbent carrier. The sorbent carrier is configured to dissolve in alkaline laundry conditions so that the sorbed acid and surfactant are released as detergent actives.
The compositions use specific acid systems in sorbed form, including phosphoric acid and alpha hydroxy acids such as gluconic acid, malic acid, and citric acid, with citrate salts such as sodium dihydrogen citrate described as optional. The sorbed component is held on the hydrophobic silica sorbent carrier under very acidic pH constraints, including pH less than about 3.5 and down to less than about 1.
The sorbent carrier design is described as hydrophobic silica particles, including mixtures of differently hydrophobic silica particles and porous silica particles configured with different hydrophobicity distributions. In the porous particles, an inner portion is described as less hydrophobic than an outer coating. In personal care product contexts, detergent actives are described as being dispersed in products such as antiperspirant and deodorant formulations.
Claims Coverage
The partial content presents three independent claims that cover detergent compositions using a hydrophobic silica sorbent carrier to hold and release a sorbed component comprising specific acid systems and surfactant, with constraints on pH and defined hydrophobicity structure within silica particles. Each independent claim includes multiple inventive features.
Hydrophobic silica sorbent carrier holding an acid/surfactant sorbed component
A detergent composition comprising from 30.0 to 40.0 wt % sorbent carrier comprising hydrophobic silica; from 0.1 to 15% of an acid precursor comprising citrate; and a sorbed component sorbed by the sorbent carrier, the sorbed component comprising from 5 to 15% surfactant, from 5 to 15% phosphoric acid, from 2 to 10% gluconic acid, from 10 to 20% malic acid, from 20 to 30% citric acid, and from 5 to 15% water.
Very acidic aqueous component sorbed by hydrophobic silica carrier
A detergent composition comprising an aqueous component comprising from 5 to 15% surfactant, from 5 to 15% phosphoric acid, from 32 to 70% alpha hydroxy acid, and from 5 to 25% water, wherein the aqueous component has a pH less than about 1; and from 30.0 to 40.0 wt % sorbent carrier comprising hydrophobic silica, wherein the aqueous component is sorbed by the sorbent carrier.
Personal care product dispersed detergent with inner-portion sorption
A detergent composition dispersed in a personal care product and comprising an aqueous component comprising from 5 to 15% surfactant, from 37 to 75% acid, and from 5 to 25% water; and from 30.0 to 40.0 wt % sorbent carrier comprising hydrophobic silica particles, wherein each particle has an inner portion and an outer coating, wherein the inner portion is less hydrophobic than the outer coating, and wherein the aqueous component is sorbed by the inner portion of the sorbent carrier.
Across the independent claims, the coverage centers on detergent compositions where a sorbed, acidic acid/surfactant aqueous component is sorbed by a hydrophobic silica carrier, with required compositional ranges and, for the personal care product form, a defined inner-portion versus outer-coating hydrophobicity relationship for sorption.
Stated Advantages
Inhibiting fabric staining.
Reducing skin irritation.
Documented Applications
Personal care product compositions, including antiperspirant and deodorant product compositions.
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