Denture cleaning composition

(42) Date of commencement of the patent: 15.11.1993 (45) Date of issue: 27. 5. 1994 (55) Documentation:

06-051617742 DE-AS2133710 DE-AS2312847 DE-0S2741072 DE-053931129 OE-DS3934390 EP-A2 323049 EP-A2 334060 GB-A 2213159 (73) Patent owner:

ALTWIRTH OSKAR

A-4950 ALTHEIM, OOERÖSTERREJCH (AT).

(54) DENTAL PRESERVES CLEANING AGENT (57) A denture dentifrice consists of basic and acidic bastand particles, in particular kallua or sodium talc, potassium or sodium sulphate, potassium nitrone sulphate, salts of monoferribed or mefirbesiched weak acids and additives, which are evolved with gas and forming a buffered solution having a pH above 8.5 in water.

In order to achieve a cleaning effect which also removes special claver particles, the cleaning agent contains, as brightening constituents, potassium or sodium cyanoborate and potassium or sodium carbonate in any mixing ratio and in an amount of 23-75% by weight and as acid constituent Keliumonopersulfate in an amount of 20% - 48 Gew .5 «and preferably alkylbenzenesulfonate in an amount up to 10 wt.%.

CQ

AT 397 766

AT 397 766 Β

The invention relates to a detergent for dentures, consisting of basic and acidic components, in particular potassium or sodium perborate, potassium or sodium percarbonate, Kaiiummonopersulfat, salts of mono- or polybasic weak acids and additives, which is accompanied by gas evolution and formation of a buffered solution with a pH above 8.5, preferably s 8 to ii, in water

Detergents for dentures or other removable dentures are usually available in powder or tablet form and get through a gas-generating component an automatic effect, since gas is released when the substance is dissolved in water by an acid-base reaction, which leads to a strong turbulence of the solution and thus to a detachment of the η impurities from the prosthesis. As gas-generating constituents carbon dioxide or oxygen-evolving substances are generally considered. which can exist either as acidic or as basic components and bring in the solution with the respective other reaction component the desired gas evolution. The development of oxygen in addition to the Durchwirbelungseffekt to carbon dioxide has the advantage of oxidative bleaching and baktoriciden effect, which preferentially oxygenating substances. Another important component of these detergents is to be seen in the surface-active, surfactant components, the removal of the impurities from the

To facilitate prostheses and dissolution of these impurities.

The known cleaning agents have so far proven to be useful when used for the dental prostheses usual Haftmittet, since the remaining on the removable denture adhesive film can be resolved by zo the influence of the surfactants and the bubbling effect of the resulting gas and removed. However, difficulties arise when adhesives with special adhesive components, such as Polyvfnylacetat are in use, because such Klebekotnponenten can no longer be removed with the help of surfactants and a turbulence of the solution alone.

As EP-A 334 060, DE-A 1 617 742, DE-A 3 834 390, EP-A 323 048 and GB-A 2 213 159 show, there are already such cleaning agents for dental prostheses with basic and / or acidic constituents, dis sodium perborate, potassium monopersulfate, sodium bicarbonate and additives, and when dissolved in water, give a solution having a pH above 8.5. However, here the pH in the reaction of the basic and acidic components due to the reaction-induced release of oxygen and carbon dioxide is constantly changed, which detj retaliation and detachment effect for special, difficult to saponify Ktebekomponenten. In addition, most of these detergents can not dispense with polluting phosphates and are by prolonged lying through

Moisture absorption Risk of decomposition

The invention is therefore an object of the invention to overcome these deficiencies and to provide a Remigungsmittef of the kind described, the speed leads to an automatic, thorough cleaning effect with environmentally friendly ingredients and good storable speed even when using special adhesives

The invention solves this problem in that the detergent as basic constituents Kaliumöder Natrutumperborat and potassium or sodium percarbonate in any mixing ratio and in a total amount of 23-75 wt.%, And as the acidic ingredient Kaliummonopersulfet in an amount 40 of 20-48 wt .% And preferably Atkylbenzolsulfenat in an amount up to 10 wt.% Contains The high pH of this cleaning solution ensures the saponification of the polyvinyl acetate u. like. Adhesive components of special adhesives and together with the active oxygen-forming constituents. an excellent cleaning effect, wherein the composition according to the invention provides a specially buffered system, bd the pH hardly changes during the entire reaction time 4S and maintains its high value, which is a prerequisite for a good detachment of the hard-to-saponify Polyvjnylacetat components of the adhesive is to reinforce the cleaning effect may be added Alkyibenzolsuffonat which also serves as a foaming agent and for setting the respectively desired high pH are additions of basic and acidic substances, such as alkali bicarbonates, alkali metal carbonates, Kaiziumoxide, Alkaiihydrogensulfate, Aikalihydrogendtrate, AlkaBhydrogen tartrate u. like. so expedient, soft substances also prolong the gas evolution and bring a certain insensitivity to humidity with prolonged lying of the detergent with it. For environmentally friendly reasons, the use of phosphates is intentionally dispensed with. In addition, the cleaning agent according to the invention is surprisingly distinguished by its gentle action against metal parts of the prostheses, wherein the corrosive tendency towards metal parts is further reduced by a relatively high content of oxygen-generating components, and there is no metallic taste when inserting the cleaned prostheses, as he usually does when using ordinary, Metals attacking cleansers occur

AT 397 766 B

The cleaning agent according to the invention may of course also other additives such as surfactants, Tabietfierungshilfsmittel, dyes, odor and flavor, tompiexierende Kaiklöser, proteolytic enzymes, sauarstoffaktivierende agent u. Like. Included.

For better illustration, some examples of a cleaning agent according to the invention are given below:

Example 1:

<td>Sodium perborate Sodium percarbonate Potassium monopersuEfate (KMPS) various additives</td><td>25% by weight 38% by weight 30% by weight 7% by weight</td>

The result is a substance with an average reaction rate at a pH of 9.5 - 9.6.

Example 2:

<td>sodium</td><td>36% by weight</td>

<td>Potassium monopersuifate (KMPS)</td><td>25% by weight</td>

<td>Sodium percarbonate (sodium carbonate peroxohydrate)</td><td>11% by weight</td>

<td>Sodium bicarbonate (sodium bicarbonate)</td><td>18% by weight</td>

<td>Alkylbenzoisultenate and div. Additives</td><td>10% by weight</td>

This substance is characterized by a relatively long-lasting stability at normal atmospheric humidity and results in a solution with long-lasting oxygen evolution a pH of about 10.5 - 10.6.

Example 3:

<td>Sodium perborate Potassium monopersuifate (KMPS) Sodium percarbonate Sodium cibonate various additives</td><td>10% by weight 30% by weight 22% by weight 30% by weight 8% by weight</td>

A substance that acts fast saponifying at a pH of 10.6 - 10.7 and a good gas and gas

Oxygen evolution shows.