Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Patent
1997-08-21
1999-12-28
Lieberman, Paul
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
510375, 510378, 510466, 424 44, 424 53, 424 54, C11D 339, C11D 3395
Patent
active
060081716
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to cleansing compositions and especially to compositions for use in cleansing dentures and the like. In particular, the invention relates to denture cleansing compositions having enhanced antiplaque activity together with excellent denture cleansing performance, appearance, physical and dissolution characteristics, anti-bacterial efficacy and in-use performance characteristics.
BACKGROUND
Effervescent tablets and powders for cleansing dentures and the like are well known in the art. The aim of a denture cleanser product is to clean the denture as fully and as quickly as possible and especially to remove the accumulation of plaque, mucilaginous and bacterial deposits which collect while the denture is being worn. To wear a denture which has not been completely cleaned of plaque and bacterial deposits is not only unhygenic but can also within a short space of time result in a detrimental effect on the mucous membrane. Moreover bacterial deposits can lead to so-called bacterial corrosion of the plastics material used to produce the denture with consequent color-change and malodor-formation.
It is known to include silicones in dentifrice compositions, allegedly to coat the teeth and prevent cavities and staining. For instance, GB-A-689,679 discloses a mouthwash containing an organopolysiloxane for preventing adhesion of, or for removing tars, stains, tartar and food particles from the teeth.
U.S. Pat. No. 2,806,814 discloses dental preparations including, in combination, a higher aliphatic acyl amide of an amino carboxylic acid compound as an active and a silicone compound. The patent notes that silicone compounds have been proposed for prevention of adhesion or to facilitate the removal of tars, stains, tartar and the like from teeth. The silicone compound is said to act as a synergist in improving the antibacterial and acid inhibiting activity of the active ingredient. Dimethyl polysiloxanes are said to be particularly effective.
U.S. Pat. No. 3,624,120 discloses quaternary ammonium salts of cyclic siloxane polymers for use as cationic surfactants, bactericides and as anticariogenic agents.
Dentures of course are generally made of a plastics material such as acrylic and the problem of preventing plaque accumulation or of removing plaque from dentures is therefore fundamentally different from the problem of plaque prevention and removal from dental enamal.
Accordingly, the present invention provides a denture cleanser having improved efficacy on plaque, mucilaginous and bacterial deposits and which at the same time provides excellent denture cleansing performance, appearance, physical characteristics, dissolution and in-use performance characteristics.
SUMMARY OF THE INVENTION
According to a first aspect of the invention, there is provided a denture cleansing composition comprising an inorganic persalt bleaching agent, an effervescence generator and an aminoalkylsilicone as antiplaque agent. The present invention also relates to the use of the defined aminoalkylsilicone as antiplaque agent in denture cleansing compositions
All percentages and ratios herein are by weight of total composition, unless otherwise indicated.
The cleansing compositions of the invention thus comprise three essential components, a bleaching agent, an aminoalkylsilicone and an effervescent base composition. Each of these will be discussed in turn.
The bleaching agent takes the form of an inorganic persalt and can be selected from any of the well-known bleaching agents known for use in denture cleansers such as the alkali metal and ammonium persulfates, perborates, percarbonates and perphosphates and the alkali metal and alkaline earth metal peroxides. Examples of suitable bleaching agents include potassium, ammonium, sodium and lithium persulfates and perborate mono- and tetrahydrates, sodium pyrophosphate peroxyhydrate and magnesium, calcium, strontium and zinc peroxides. Of these, however, the alkali metal persulfates, perborates and mixtures thereof are prefered for use herein, hi
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Hughes Iain Allan
Ryan Elizabeth Mary
White Christopher David
Del Cotto Gregory R.
Hentz Mary Cay
Lieberman Paul
Mohl Douglas C.
The Procter & Gamble & Company
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