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Патент USA US2403612

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Patented July 9, 1946
I 2,403,612
UNITED STATES
PATENT ' OFFICE
2,403,612
PROCESS FOR REMOVING GREASY DE
POSITS FROM CONCRETE, WOOD, AND
TILE SURFACES
Robert L. Reynolds, _Washlngton, D. 0., and
Harlan M. Rice, Syracuse, N. Y., assignors to
The Solvay Process Company, New York, N. Y.,
a corporation of New York
No Drawing. Application May 6, 1942,
Serial No. 441,994
> 7' Claims. (01. 252_1’61)'
1
2
This invention relates to a \process for remov-v
ing deposits of an oily, greasy waxy Or asphaltlc
nature, hereinafter referred. lto generically as
process for effectively removing greasy deposits
from surfaces soiled therewith.
It is a more speci?c object of this invention to
"greasy deposits," from surfaces soiled therewith,
provide an e?ective garage ?oor cleaner capable
more particularly to a process for removing grease 5 of cutting greasy deposits von concrete garage
and dirt from concrete garage flbors.
floors and of removing the deposits thus treated
As is well known, concrete, wood and tile sur
from the ?oors by ?ushing with water.
faces frequently become soiled with greasy de
We have made the surprising discovery that
posits. This problem is particularly acute in the
greasy deposits on surfaces soiled therewith may
case of concrete garage ?oors, especially those of 10 be effectively removed by contacting the deposits
large commercial garages, which quickly become
with a composition comprising o-dichlorbenzene
coated with deposits of grease and oil with which ‘ containing dissolved therein a substantially salt
are intermixed considerable quantities of dirt.
free water-soluble alkyl mononuclear aromatic
These deposits, because of the comparatively
sulfonate detergent, the alkylv side chain of which
rough and porous nature of the concrete SUI“. 15 contains between 12 and 30 carbon atoms, and
faces, adhere tenaciously to the ?oors and are
then flushing the deposits from the surfaces with
exceedingly di?icult to remove; however, it is
water. We have found that our novel compo
highly undesirable to permit them to remain on
sitions cut the greasy deposits easily without ex
the floors since they tend to accumulate and thus
cessive scrubbing, thereby quickly disengaging the
render the garage ?oors extremely slippery and 20 grease and dirt from the soiled surfaces in spite
unsightly in appearance. Hence, for some time
of the tenacious adherence normally displayed by
there has been a demand for an effective garage
such deposits;-furthermore, our compositions are
?oor cleaner.
_
readily emulsi?able in water so that they may
A satisfactory garage ?oor cleaner must be
be washed from the surfaces by merely ?ushing
capable of cutting the greasy deposit on the floor 25 with water. The compositions of our invention
so as to loosen the grease and remove the 1116.are readily ?uid. and may be applied to‘ the greasy
.posit, together with the "dirt incorporated there
deposits by spraying in undiluted'form or emul
- with, from the concrete surface; furthermore, a
si?ed in from one to ten times their weight in
satisfactory cleaner should vbe such .thatiafter
~ water; if a particularly heavy greasy deposit is to
“application thereof to the garage ?oor, removal 30 be removed, we prefer to use our compositions
thereof together with they grease and dirt'may
in substantially undiluted form. Our composi
~ be accomplished by simply flushing the floor with
...tions arenot inflammableso thatno ?re hazard
water.
The cleaner should also ‘be ‘chemically.
ispresented by their use. They are, therefore,
inert toward the concrete. To .our knowledge
.preeminently suited for removing greasy deposits
" no materialsatisfying these requirements has as 35 from surfaces soiled therewith and are particu
yet been provided. The use of alkaline deter
gents such as soap, soda and the like has proved
unsatisfactory since excessive scrubbing is re
larly adapted for removing such deposits from
concrete garage ?oors.
> In preparing the compositions ‘employed in our
invention, a substantially salt-free water-soluble
posit. Organic solvents capable of dissolving the 40 alkyl mononuclear aromatic sulfonate, the alkyl
side chain of which contains‘ between 12 and 30
grease also do not fill the above requirements
carbon atoms, or a mixture of such substances,
since they are almost universally insoluble in wa
may be employed. Preferably, ‘mixtures of such
ter, so that they cannot be successfully removed
sulfonates are employed, obtainable by chlorinat
from the floor by ?ushing with water, and since
they generally, are in?ammable and, hence, pre 45 ing a petroleum hydrocarbon mixture having an
average carbon content of between 12 and 30
sent a certain fire hazard on use.
\
carbon atoms per molecule, e. g. kerosene or a
The above discussion also applies to the re
para?ln oil of the type commercially known .as
moval of greasy deposits from surfaces such as
“white oil,f’ condensing the chlorinated hydrocar
wood and tile which may become soiled therewith 50 bon with a mononuclear aromatic compound, such
quired before they effectively cut the greasy de
since suchdeposits frequently adhere tenaciously
to the soiled surfaces and cannot be satisfactorily
removed with alkaline detergents or organic sol
vents for reasons above mentioned.
It is an object of this invention to provide a 55
as benzene or phenol, in the presence of alumi
num chloride, suli’onating the mixture ofzalkyl
aryl compounds thus produced to obtain a mix-_
ture of alkyl aryl sulfonic acids, neutralizing the
alkyl aryl sulfonic acids thus obtained to form
2,403,612
3
a water-soluble alkyl aryl sulfonate mixture, and
separating the bulk of the inorganic sulfates from
the alkyl aryl sulfonates thus obtained in any
suitable manner such as, for example, by ex
tracting the sulfonates with alcohol to produce a
substantially salt-free sulfonate detergent. Sub
stantially salt-free alkyl aryl sulfonates, the alkyl
side chains of which are derived from a petro
leum source, are particularly suitable for use in
our invention since the nature of their side chains
4
to those concerned with the removal of such
greasy materials.
Since certain changes in carrying out the above
process and certain modi?cations in the compo
sitions which embody the invention may be made
without departing from its scope, it is intended
that all matter contained in the above description
shall be interpreted as illustrative and not in a
limiting sense.
We claim:
10
1. A process for removing a greasy deposit from
a surface soiled therewith selected from the group
consisting of concrete, wood and tile surfaces
which comprises applying thereto a composition
makes them readily soluble and compatible with
o-dichlorbenzene. Alkyl aryl sulfonates of the
type described are readily soluble in o-dichlor
benzene to the extent of about 25%.
comprising o-dichlorbenzene containing dissolved
The amount of the substantially salt-free sul
fonated detergent dissolved in the o-dichlorben
therein between about 1% and about 25% of a
water-soluble alkyl mononuclear aromatic sul
fonate detergent substantially free of inorganic
, zene may vary considerably since solutions con
taining between about 1% and about 25% of the
salts, the alkyl side chain of which contains be
detergent have been found suitable; preferably,
tween 12 and 30 carbon atoms, and then flushing
20 the greasy deposit from the surface with water.
vention contain approximately 10% of the sul
2. A process for removing a greasy deposit from
fonated detergent. As hereinabove pointed out,
a surface soiled therewith selected from the group
the compositions may be applied to the greasy
consisting of concrete, wood and tile surfaces
deposits to be removed in substantially undiluted
which comprises applying thereto a composition
form, particularly when exceedingly heavy greasy
the compositions used in accordance with our in
deposits are to be removed.
comprising o-dichlorbenzene containing dissolved
However, since we
therei
have found emulsions of the above compositions
between about 1% and about 25% of a
from soiled surfaces, these compositions may be
applied in the form of emulsions containing one
water-soluble alkyl mononuclear aromatic sul
fonate detergent substantially free of inorganic
salts, the alkyl side chain of which is derived from
to ten times their weight of water.
Application of the compositions of our inven
tion to the greasy deposits to be removed may be
30 carbon atoms, and then flushing the greasy
deposit from the surface with water.
are also effective in removing greasy deposits
a petroleum source and contains between 12 and
' accomplished in any suitable manner, such as, for
3. A process for removing a greasy deposit from
deposits for a time sufficient to cut the grease
benzene containing dissolved therein between
other suitable manner, since the cleaner emul
sifies the grease and dirt in the water and thereby
thereto an aqueous emulsionv of a composition
example, by spraying. These compositions are 35 a concrete garage floor which comprises apply
ing thereto a composition comprising o-dichlor
permitted to remain in contact with the greasy
about 1% and about 25% of a mixture of water
and thereby disengage it, together with the dirt
soluble alkyl mononuclear aromatic sulfonates
accumulated therewith, from the soiled surface;
ordinarily between about one and about ten min 40 substantially free of inorganic salts, the alkyl
side chains of which are derived from kerosene,
utes of contact are suitable to effect this disen
and then ?ushing the greasy deposit from the
gagement. At the end of this time the cleaner '
floor with water.
may be removed from the surface, together with
4. A process for removing a greasy deposit from
the greasy deposits, by merely flushing the sur
face with water by means of a hose or in any 45 a concrete garage-?oor which comprises applying
comprising o-dichlorbenzene containing dissolved
therein between about 1% and about 25% of a
mixture of water-soluble alkyl mononuclear aro
A preferred embodiment of this invention involves
the use of our compositions for the removal of 50 matic sulfonates substantially free of inorganic
salts, the alkyl side chains of which are derived
greasy deposits from concrete garage ?oors since
from kerosene, and then flushing the greasy de
the properties of our compositions, as set forth
posit from the floor with water.
above, are such that such deposits may be re
5. A process for removing a greasy deposit from
moved with particular facility, thus satisfying the
demand for an effective cleaner for this purpose. 55 a concrete garage floor which comprises apply
ing thereto a composition comprising o-dichlor
The following example is illustrative of our in
benzene containing ‘dissolved therein (between
vention:
about 1% and about 25% of a mixture of water
A composition containing 90% o—dichlorben
soluble alkyl benzene sulfonates substantially
zene and 10% of a substantially salt-free alkyl
permits substantially complete removal thereof.
mononuclear aromatic sodium sulfonate, the al 60 free of inorganic salts, the alkyl side chains of
which are derived from kerosene, and then ?ush
kyl side chain of which is derived from kerosene,
ing the greasy deposit from the ?oor with water.
was sprayed on‘ a greasy concrete garage floor
and permitted to remain in contact therewith
for five minutes. At the end of this time the ma
terial was removed by flushing with water, where
6. A process for removing a greasy deposit from
a concrete garage floor which comprises apply
65 ing thereto an aqueous emulsion of a composi
by the grease was substantially completely re
moved from the concrete floor.
From the above description it will be evident
that our invention provides an eillcient and prac
tical method of removing greasy deposits from 70
surfaces soiled therewith, particularly from con
crete surfaces such as garage floors. In view of
the ease with which our invention may be car
ried out and in view of the economic nature of
tion comprising o-dichlorbenzene containing dis
solved therein between about l% and about 25%
of a mixture of water-soluble alkyl benzene sul
fonates substantially free of inorganic salts, the
alkyl side chains of which are derived from kero
sene, and then flushing the greasy deposit from
the floor with water.
7. A process for removing a greasy deposit from
a surface soiled therewith selected from the group
our compositions, our invention will be of value 75 consisting oLconcrete, wood and tile surfaces
2,408,612
5
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i
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s
I
v
which comprises applying thereto a composition
from a para?in oil of the type commercially
comprising o-dichlorbenzene containing dissolved
known as “white oil," and then ?ushing the
therein between about-1% and about 25% or a
greasy deposit from the surface with water.
water-soluble alkyi mononuclear aromatic’ sul
fonate detergent substantially free of inorganic 5
ROBERT L. REYNOLDS.
salts, the alkyl side chain oi.’ which is derived
‘
‘
HARLAN M. RICE.
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