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Патент USA US2409718

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Patented Oct. 22, 1946
Foster Dee Snell, New York, and Kurt W. Haese
ler, Forest Hills, N. Y., assignors to Foster D.
Snell, Inc., a corporation of New York
No Drawing. Application November 13, 1941,
Serial No. 419,028
2 Claims.
(01. 252-106)
This invention relates to a’ composition for
cleaning dentures.
3’,5',6' hexachlorodiphenylmethane in the form
of one of its water soluble salts, a water soluble
i‘ ‘In the cleaning of false teeth, supporting struc
surface tension lowering agent, and a scale dis
tures therefor, bridges, or like dentures, there
integrating material. Preferably the composition
are strict requirements to be met. It is necessary,
comprises an oxidizing agent that assists in de
for example, that the cleaning composition should
stroying certain materials including bacteria and
penetrate the scale (plaque) of calcareous de
colored, staining materials.
posits, mucin, and other material accumulated on
In addition to the materials recited the com
the dentures and disintegrate such scale to read
position may contain odor or taste establishing
ily removable form, remove the loosened scale, de 10 materials and a relatively large proportion of
stroy the odor of any stale saliva present, and
inert diluent such as salt.
disinfect the dentures, all without the necessity
The invention is illustrated by the composition
of abrasives or brushing. It is also necessary that
shown in the following table, proportions here
the cleaning material in small proportions be
and elsewhere herein being expressed as parts by
non-toxic to humans but effective as a germicide. 16 weight.
Also, it should be either practically tasteless and
Denture cleaning composition
odorless or of pleasant taste and odor. For satis
factory distribution and use, it should be avail
able in substantially non-caking, powder “form,
and dissolve with reasonable ease w?erf'added’to" 20
water. The resulting aqueous solution must not
alter the established color of the plate.
These requirements are more severe than for
Sodium salt of 2,2’ dihydroxy 8,5,?-3’,5’.6’
hexachloro-diphenylmethane (disinfectant)
compositions to be used in cleaning natural teeth. ‘ Sodium
rborate (oxidizing agent)_.._..___.._
Conventional compositions for natural teeth are 25 Tetraso ium pyrophosphate (scale disinte
grating material) .................... ._‘__..
preformed pastes, liquid solutions of surface-ac
Sodium lauryl sulfa-acetate (surface ten ion
tive agents, powders containing abrasive, etc. for
application on a moist brush. Compositions for
the two purposes are not satisfactorily inter
changeable. In cleaning natural teeth, the teeth 30
lowering agent) ........... U‘. _ . . . _ _ _
_ _ _.
Tricalcium phosphate (anticaking agen ___Oil of peppermint (to establish odor) . _
_ _ __
Sodium chloride (diluent) _________________ _.
0. 5—2
-l.~5—5 -
0. 5-1
0. 5
To maliretlllw parts
0 a
are invariably moist and brushing is employed.
Arti?cial dentures are frequently dry and the
The ingredients are mixed dry in any suitable
deposits to be removed are more ?rmly placed due
manner, commonly with the tricalcium phosphate
to such drying. The dentures are constructed of
added last for greater effectiveness. Before being
porcelain, rubber, plastic, or other materials 35 used, the mixture is dissolved in water, to give an
that are entirely different from the calcium phos
aqueous solution containing about 2 parts of the
phate of the teeth and the live tissue of the gums.
mixture to 100 parts of water or other concentra
The present invention provides _a_dry,_non-cak
tion desired.
ingjgpwdefthjatishuickly soluble in water, that
To clean used dentures that are of average con
meets the requirements set forth for a denture 40 dition Or slightly worse, it is necessary only to im
cleaner, and that will clean dentures during im
merse the dentures in the aqueous solution for
mersion for a quarter of an hour or so, without
?ve to ten minutes. Warm water is usually used.
the use of any abrasive or brushing. The compo
In particularly obstinate cases the dentures are
sition penetrates material caked or dried on the
soaked overnight. During this immersion, the
dentures, transforms it, loosens it, and then re 45 dissolved composition penetrates the ?lm of cal
moves it from the dentures, and causes thorough
careous deposit and mucin on the dentures and
disinfection. The composition is without bleach
ing effect on any part of the dentures, such as
loosens not only that, but also other dirt parti
cles. In addition, the composition destroys germs
pink base plates, and does not cause deposition of
at such a rate and so effectively as to meet the
salts from hard water used in dissolving the den 50 Federal Food and Drug Administration speci?ca
ture cleaning composition previous to use.
tions for an “antiseptic.”
The composition of the invention which shows
While particularly satisfactory results have
these properties comprises a disinfectant that is
been obtained with the composition described, al- '
unique and for which we know of no alternative
ternative materials may be substituted for the
in our formula, namely, 2,2’ dihydroxy 3,5,6
various ingredients in the above table.
For the disinfectant any of the water soluble
salts of 2,2’ dihydroxy 3,5,6-3',5',6' hexachlorodi
phenylmethane may be used, as for example, its
sodium, potassium, or calcium salt. No other
disinfectant has been found satisfactory.
lauryl sulfoacetate shown in the table, another
In place of the sodium perborate as the oxi~
dizing agent, there may be used other alkali
alkali metal higher alkyl sulfate. or a sulfonic
acid derivative of a higher alcohol. Thus, there
may be used the sulfonic acid derivatives of alco
hols containing 12 to 20 carbon atoms to the
molecule, the said compounds before incorpora~
tion into our composition being suitably neutral
ized by alkali to the stage of being approximately
neutral or slightly alkaline. Of the salts of the
metal perborates or water-soluble non-poison
ous perborates of other metals. Thus, there may
be used the perborates of potassium or ammo 10 higher sulfates, there may be used, for instance,
nium, either alone or mixed with sodium perbo
sodium dodecyl sulfate, sodium hexadecyl sulfate,
rate. .Almmonium perborate, however, is some
(Ti/sodium octadecyl sulfate, the higher alkyls
what too hygroscopic for most satisfactory gen
present in these compositions being either
eral use. Considering properties and price, so
straight or branched chain and saturated or un
dium perborate is the most advantageous per 15 saturated, in accordance with commercial prac
borate for the present purpose. The perborate
tice in the industry of non-soap detergents.
has a bleaching effect upon ?lms on the dentures.
Another detergent that may be used is the one
The proportion of the selected perborate may
known as sodium keryl benzene sulfonate.
be varied within rather wide limits. Proportions
The proportions of the non-soap detergents
substantially in excess of ten per cent tend to in 20 used are suitably the smallest amounts that will
troduce complications, due to caking of the com
give approximately the minimum surface tension
positions on long standing, without giving corre
of water solutions when the cleaning composition
sponding and fully offsetting advantages. Under
is dissolved to give the aqueous solution of con
some circumstances, however, it is found desir
centration suitable for use. Thus, there may be
able to exceed the 10% speci?ed. Amounts of 25 used about 1.5 to 5 parts of the non-soap deter
sodium perborate less than 5 parts to 100 parts of
gent to 100 of dry weight of the whole composi
the finished composition are not entirely satis
factory from the standpoint of the cleaning
The tri'calcium phosphate in the composition
power of the whole composition.
tabulated above is representative of anti-caking
The tetrasodium pyrophosphate used as the 30 agents. It minimizes the tendency of the com
scale disintegrating agent may be replaced by
position to form itself into a compact mass, dur
other molecularly dehydrated complex phos
ing storage before use. In place of the calcium
phates such as sodium hexametaphosphate, some
phosphate for this purpose, there may be used
times known as Calgon or in a modi?ed form as
powdered corn-starch, precipitated calcium car
Calgonite, or by the compound known commer
bonate, precipitated magnesium carbonate, or
cially as sodium tetraphosphate. In a different
other material that is adapted to form a ?ne
class as to satisfactoriness, but usable for some
coating on particles that, on coming into contact
purposes are trisodium phosphate, sodium sesqui
with each other, would cake together. The tri
carbonate, or similar alkaline salts. Mixtures of
calcium phosphate is preferred and gives out
the several salts may be used. Also, the metal 40 standing results for this purpose.
combined in the salt selected may be either the
The oil of peppermint establishes the ?avor
sodium described or potassium, ammonium, or
and odor. In place of the oil of peppermint or
the like. The salt used must be soluble in water,
with it, there may be used methyl salicylate, pine
stable, and free from objectionable effect upon
oil derivatives, or other high boiling esters or
the other ingredients of the cleaning composi
essential oils of pleasing taste and odor.
The proportion of the ?avoring material should
It is considered that the complex phosphates
be below that amount which, if used, would irri
such as tetraphosphate, hexametaphosphate, and
tate the tissues of the mouth when the ?avoring
the like disintegrate the scale chie?y by seques
material is accidentally placed in the mouth in
4.ering_the_alkalinge_art‘h__rnetals such as calcium 50 small proportion. On the other hand, the pro
and magnesium present inwt’lié'deposits‘ on'sthe
portion of the ?avoring material should not be
denture. Trisodium phosphate, sodium sesqui
so low as to lose its ?avoring effect, in case such
silicate, and the like are considered to function
effect is desired in the composition.
largely by forming a precipitate of phosphate,
The sodium chloride in the formula of the table
silicate, and the like with such alkaline earth 55 serves largely as diluent. This salt may be re
metals, thus liberating the organic radicals pre
placed by other Water-soluble materials that are
viously combined with the alkaline earth metals,
non-toxic to human beings and without injurious
these radicals combining with the alkali metal
effect upon the tissues of the body, the dentures,
originally present in the phosphate or carbonate,
or upon other ingredients of the cleansing com
to form alkali metal salts. Such complete chem 60 position. Thus, there may be used in place of
ical reformation disintegrates the scale or plaque
the sodium chloride such salts as sodium sulfate
so that it is readily removed, the complex phos
or potassium chloride.
phates serving this purpose especially effectively.
In making the substitutions of the various al
The proportion of the phosphate or the alter
ternative materials for those given in the table
native therefor is suitably in the range of about 65 above, the substitution should be made on the
20 to 70 parts for 100 parts of the ?nished com
basis of equal proportions. Thus, 1 part of the
position. Proportions larger than 70 parts lead
material shown in the table is replaced by ap
to waste due to extra expense without compensat
proximately 1 part of the alternative material.
ing advantages, whereas amounts much less than
In a typical test, there was used the composition
20 parts give imperfect cleansing of the dentures. 70 shown in the table above containing 0.7 part of
As the non~soap detergent or surface-tension
the antiseptic to 100 parts dry weight of the com
lowering agent, there is used a water-soluble or
position and such a dilution with water as to give
ganic compound containing both lipophylic and
a solution containing 2.5 parts of the said com
hydrophylic groups, these groups being present in
position to 100 parts of water. This solution test
the same molecule, as, for example, the sodium 76 ed for germicidal properties under standard con
LU“ LIL/lltl
ditlons shows no growth after 5, 10, or 15 min
utes. Under comparable conditions, phenol di
luted with 80 times its weight of water permitted
growth after 5 minutes’ treatment but no growth
after either 10 or 15 minutes.
It will be understood that the details given
are for the purpose of illustration, not restric
tion, and that variations within the spirit of the
invention are intended to be included in the scope
of the appended claims.
What we claim is:
chloride as diluent to make 100 parts total, all
proportions being by weight.
2. A denture cleaning composition comprising a
dry free ?owing powder of the following compo
sition: sodium salt of 2,2’ dihydroxy, 3,5,6-3’,5',6'
hexacmorodiphenylmethane 0.5-2 parts as dis
infectant, a water-soluble, non-toxic perborate
5-10 parts, an alkali metal molecularly dehy
drated phosphate 20-70 parts, a powdered anti
10 caking agent 2-3 parts, a surface tension lower
ing agent selected from the group consisting of
1. A denture cleaning composition comprising a
higher alkyl sulfates and sulfonates 1.5-5 parts,
dry free ?owing powder of the following compo
and a non-toxic water soluble salt serving as a
sition: sodium salt of 2,2’ dihydroxy 3,5,6~3',5',6'
diluent in proportion to make 100 parts of the
hexachlorodiphenylmethane 0.5-2 parts, sodium 15 whole composition, all proportions being by
perborate 5-10 parts, tetrasodium pyrophosphate
20-70 parts, sodium lauryl sulfo-acetate 1.5-5
parts, tricalclum phosphate 2-3 parts, and sodium
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