Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Cosmetic – antiperspirant – dentifrice
Patent
1997-08-06
2000-09-26
Warden, Jill
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Cosmetic, antiperspirant, dentifrice
424 7803, 512 2, 514844, 134 42, 81156, A61K 600, A61K 746, B08B 314, D06M 102
Patent
active
06123950&
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to silicone-containing compositions and to use thereof in various household products such as personal care products, laundry and household cleaners, bleaching compositions and the like. In particular, it relates to silicone-containing lipophilic compositions based on flavorants, perfumes, coolants or antimicrobial agents as lipophile and which display improved residuality, impact and/or efficacy on surfaces treated therewith, for example teeth, dentures, skin, hair, laundry, dishware, working surfaces and the like. In addition, it relates to silicone-containing bleach compositions which additionally contain bleach-sensitive ingredients such as perfumes, flavorants and the like and which display improved stability.
BACKGROUND
Lipophilic compositions such as flavor, perfume, coolant and disinfectant compositions are widely used either directly or in a variety of household products inclusive of cosmetics, oral and denture compositions, bleach, dishwashing, hard surface cleaning and laundry detergent products, etc. A common problem encountered with lipophilic compositions is that of improving surface substantivity or residuality of the lipophilic component. It would be desirable in many if not most household applications to enhance the surface residuality of the lipophile in order, for example, to provide increased flavor or perfume impact or increased antimicrobial efficacy.
Modern dental hygiene and denture preparations, for example, typically contain antiplaque and/or antitartar agents, as well as antimicrobial agents and flavorants. Antimicrobial action could affect plaque formation by either reducing the number of bacteria in the mouth/dentures or by killing those bacteria trapped in the film to prevent further growth and metabolism. Flavorants may alleviate the problem of bad breath via a deodorizing action. Some antimicrobial agents, e.g. menthol may, also serve as breath deodorizers. However, the efficacy of antimicrobial agents depends largely on their intraoral/denture retention, particularly their retention on the surface of the teeth or dentures where plaque is formed.
A typical disadvantage of known dental preparations is that only a relatively short time during which the teeth are being cleaned or the mouth is being rinsed is available for antimicrobial agents in the preparations to take effect. The problem is compounded by the fact that dentrifice preparations are used infrequently; most are used once or, perhaps, twice daily. Consequently, the long time period between brushings for a majority of the population provides optimum plaque forming conditions.
In many other personal and household applications, it would be desirable to provide enhanced surface substantivity. Laundry detergents, for example, would benefit by increasing perfume substantivity on fabrics so as to provide increased perfume impact on clothing after laundering or during use. Increased antimicrobial substantivity would also be beneficial from the viewpoint of reducing malodors associated with sweat or other soils. Enhanced perfume substantivity would also be valuable in fine fragrance and perfumed cosmetics. Enhanced coolant substantivity, on the other hand, would be beneficial in cough/cold products.
There has been a need, therefore, for developing lipophilic compositions which have improved surface residuality, impact and/or antimicrobial efficacy.
The use of lipophilic compounds such as perfumes, flavorants and the like in bleach-containing compositions can also raise a number of problems, especially loss of perfume or flavorant character or intensity as a result of interaction with the bleach. The efficacy of the bleaching agent can also be adversely effected. It would thus be desirable to improve the stability and effectiveness of bleach compositions containing bleach-sensitive ingredients.
It is known to include silicones in dentrifice compositions, allegedly to coat the teeth and prevent cavities and staining. For instance, GB-A-689,679 discloses a mouthwash containing a
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Cole Monique T.
The Procter & Gamble & Company
Warden Jill
Zea Betty J.
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