Note: Descriptions are shown in the official language in which they were submitted.
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TITLE OF THE INVENTION
Alkaline Cleaning Compositions
BACKGROUND OF THE INVENTION
[0001] This is a divisional application of Canadian patent
application serial
No. 2,709,134, filed on December 18, 2007.
[0001a] The use of solvents and detergent surfactants for soil and
grease removal is
known. Household cleaning products for hard surfaces such as metal, glass,
ceramic, plastic,
porcelain and vitreous surfaces are available in powder and liquid form. Such
cleaning
products typically comprise solvents, surfactants and optional builder and/or
abrasive
additives. However, such compositions tend to leave films, spots or streaks on
cleaned,
unrinsed surfaces. This often necessitates a thorough scrubbing, wiping and/or
rinsing of the
surface and adds a time-consuming and physically laborious step for the user.
Furthermore,
compositions containing detergent builder salts often use inorganic phosphate
builder salts,
which are not entirely acceptable from an environmental perspective.
[0002] Acidic and alkaline hard surface cleaning compositions are also
known in the
art. Various formulations of such cleaning compositions have been produced
that remove
grease and other soil deposits. These commercially available products are
generally suited for
removal of certain types of deposits but are generally not effective in
removal of burnt-on or
baked-on soil or grease.
[0003] Therefore, there is an ongoing need for effective hard surface
cleaning
compositions that exhibit superior cleaning performance, particularly with
respect to burnt-on
and baked-on soil or grease, but that are environmentally friendly and avoid
undesirable
residues.
SUMMARY OF THE INVENTION
[0004] In one aspect of the parent application, there was provided a
cleaning
composition, comprising:
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(i) a buffering system comprising a strong base and an organic acid;
(ii) an alkanolamine;
(iii) an ionic sulfonate surfactant; and
(iv) an organic solvent selected from the group consisting of a lower alkanol,
a
glycol ether, a glycol diether and a mixture thereof;
wherein the pH of the composition is about 9 to about 13.
[0004a] In one aspect of the present divisional application, there is
provided a cleaning
composition, comprising:
(i) a buffering system comprising a strong base and an organic acid;
(ii) an alkanolamine;
(iii) a zwitterionic surfactant present in an amount by weight of about 1% to
about 8% by weight of the cleaning composition;
(iv) an organic solvent selected from the group consisting of a lower alkanol,
a
glycol ether, a glycol diether and a mixture thereof,
wherein the pH of the composition is about 9 to about 13.
[0004b1 In another aspect of the present divisional application, there
is provided a
cleaning composition comprising:
(i) a buffering system comprising a strong base and an organic acid;
(ii) an alkanolamine in an amount of about 0.01 to about 5% by weight of the
cleaning composition;
(iii) at least one surfactant chosen from a zwitterionic surfactant, a non-
ionic
surfactant, an ionic surfactant and mixtures thereof; and
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(iv) an organic solvent chosen from lower alkanols, glycol ethers and
diethers,
and mixtures thereof;
wherein the pH of the composition is about 9 to about 13.
[0005] In still another aspect of the present invention, there is
provided a composition
useful for removing baked-on or burnt-on soils from a surface, the composition
comprising:
(i) a buffering system comprising about 0.2 to about 1% by weight of the
composition of sodium hydroxide, and about 0.5 to about 2.5% by weight of the
composition
of citric acid;
(ii) about 0.01 to about 5% monoethanolamine;
(iii) about 1 to about 4.5% cocoamidopropyl betaine;
(iv) about 0.5 to about 1.5% of a water soluble copolymer;
(v) about 1 to about 3% ethanol; and
(vi) about 2 to about 4% propylene glycol n-butyl ether;
wherein the pH of the composition is about 9 to about 13.
[0005a1 In yet another. aspect of the present invention, there is provided
a composition
for removing baked-on or burnt-on soils from a surface, the composition
comprising:
(i) a buffering system comprising about 0.2 to about 1% by weight of the
composition of sodium hydroxide and about 0.5 to about 2.5% by weight of the
composition
of citric acid;
= (ii) about 0.01% to about 5% monoethanolamine;
(iii) about 1% to about 4.5% cocoamidopropyl betaine;
2a
=
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(iv) about 0.5% to about 1.5% of a surfactant soluble carboxylated
polyelectrolyte copolymer;
(v) about 1% to about 3% ethanol; and
(vi) about 2% to about 4% propylene glycol n-butyl ether;
wherein the pH of the composition is about 9 to about 13.
DETAILED DESCRIPTION OF THE INVENTION
[0006] As used herein, ranges are a shorthand for describing each and
every value
within a range, including endpoints. In the event of a conflict between a
definition in the
present disclosure and that of a cited reference, the present disclosure
controls.
[0007] In certain embodiments, the present invention is directed to
cleaning
compositions that are suitable for use on surfaces that have burnt-on and/or
baked-on deposits
of compounds such as soil or grease. The compositions of the present invention
are directed
to solutions comprising a strong base, an organic acid, an alkanolamine, a
surfactant, a solvent
and a water soluble dispersing copolymer, wherein the pH of the composition
is, in various
embodiments, about 9 to about 13, about 10 to about 12, about 10.2 to about
11.5 and
about 10.5 to about 11.2.
[0008] In certain embodiments, these compositions are alkaline
cleaning compositions
comprising buffering systems such that the pH is maintained at a
=
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desirably alkaline yet safe level (i.e., about 9 to about 13) while
nevertheless having a
high alkali reserve, resulting in superior cleaning performance, particularly
for use
on burnt-on and baked-on soils or grease.
Buffering System
100091 The use of a buffering system comprising a high concentration
of a
strong base and an organic acid has herein been found to aid in the
maintenance of
the pH of the composition at the desired level. In certain embodiments, a
buffering
system of the present invention comprises a strong base and an organic acid.
In
certain embodiments, the organic acid may create a buffering system in
combination
with a high concentration of the strong base. Buffers and buffering systems
are
typically used in such a way as to resist changes in the pH of a solution,
thereby
keeping the pH of the solution at or near a desired level.
[000101 The embodiments of the present invention provide a cleaning
= composition comprising a strong base. The term "strong base" is
understood by
one of ordinary skilled in the art to describe highly ionic bases, i.e., those
whose.
ions separate in solution. Examples of useful strong bases for the present
invention
include bases of alkali metals, e.g., sodium hydroxide ("caustic soda"),
potassium
hydroxide, lithium hydroxide and the like. In certain embodiments, a base can
be
characterized as a strong base when it has a pKa of about 13 or above. In
variOus
embodiments, the strong base is present in an amount of about 0.01 to about
5%,
about 0.1 to about 3%, about 0.2 to about 2%, or about 0.5 to about 1% by
weight of
the total composition.
1000111 The cleaning compositions of the present invention further
comprise
an organic acid. The term. "organic acid" is understood by one of ordinary
skill in
the art to describe an organic compound that has acidic properties. Examples
of
= acids that are useful for the present invention include polyprotic acids
such as, for
example, citric acid, lactic acid, phosphoric acid, phosphonic acid or
mixtures =
thereof. In various embodiments, the acid is present in an amount of about
0.01 to
5%, about 0.1 to about 3%, about 0.2 to about 2% or about 0.5 to about 2% by
weight of the total composition.
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[000121 In various embodiments, this organic acid is a polyprotic
acid; thiS is
advantageous because more than one hydrogen ion is available to offset the
addition of base. Typically, the multiple protons on the acid have different
dissociation constants, so an additional proton is dissociated at higher
concentrations of base, thereby maintaining the overall pH of the solution
below
highly caustic levels. The buffering system may maintain the apparent pH of
the
formulation at or below the desired pH level while also maintaining a high
alkaline
reserve. This high alkaline reserve may be beneficial, as it may providing an
excess
of alkaline solution, which may in turn further contribute to removal of the
baked
and burnt-on soil deposits.
100013f In various embodiments, the compositions of the present
invention
= comprise a buffering system as described above, comprising about 0_2 to
about 5%
by weight of the composition of strong base and about 0.5 to about 5% by
weight of
the composition of organic acid; or about 0.3 to about 2.5% by weight of the
composition of strong base and about 0.5 to about 2% by weight of the
composition
of organic acid.
1000141 In certain embodiments of the present invention, the presence
of the
= previously mentioned buffering system along with a mixture of increased
levels of
surfactant and solvent provides superior cleaning against grease and other
soil
deposits as well as improved aesthetics of the cleaned surface, including
enhanced
surface shine and minimal residue.
[00015] In certain embodiments, the cleaning compositions are alkaline
formulations comprised of a strong base such as sodium hydroxide; an organic
acid
such as a polyprotic acid, e.g., citric acid; an alkanolamine such as
methanolamine;
at least one surfactant and an organic solvent. Using the buffering system of
a -
strong base and an organic acid buffer such as a polyprotic acid permits the
pH of
the final product to be stably maintained at a certain level
1000161 The cleaning compositions may further comprise an
alkanolamine,
for example, monoethanolamine, diethanolamine or triethanolamine. In various
embodiments, the alkanolamine is present in an amount of about 0.1 to about
3%,
about 1 to about 3 %, about :1.5 to about 2.5% or about 1_75 to about 2% by
weight
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of the total composition. In certain embodiments, an alkanolamine such as
monoethanolamine may be added to the compositions as a solvent, but may
additionally contribute to the buffering system-thereby aiding in the
maintenance
of the desired pH level, e.g., in various embodirnents, about 9 to about 13,
about 10
to about 12, about 10.2 to about 11.5 and about 10.5 to about 11.2; while
retaining
the desired activity against the burnt-on and/or baked-on soil deposits. This
is
achieved by, inter alia, providing a high alkaline reserve and further
permitting the
use of surfactants and solvents to provide activity against soil or grease
while
delivering a superior shine to the surface.
[000171 The compositions of the present invention may further
comprise at
least one surfactant and at least one solvent. The surfactants and solvents
may aid
in the removal of grease and other soil deposits while providing a superior
shine ,
and minimal residue to the surface being cleaned. In certain embodiments, the
compositions of the present invention comprise an increased amount of
surfactant
and/or solvent as compared to previous formulations; these increased
surfactant
and/or solvent levels contribute to the overall cleaning performance and
aesthetic
appearance of the surfaces after use.
Surfactants =
[000181 In various embodiments, the cleaning compositions may
further
comprise one or more surfactants. For example, in certain embodiments, the
compositions may comprise at least one of a zwitterionic, non-ionic or anionic
surfactant; or a mixture of any of these foregoing. For example, zwitterionic
surfactants (such as cocoamidopropyl betaine, lauryl/myristyl dimethyl betaine
or
cocoamidopropyl hydroxyl betaine) and non-ionic surfactants (such as
alkoxylated
alcohol non-ionic surfactants, e.g., polyethoxylated alcohol, lauroyl arnine
oxide
and cocoamidopropyl amine oxide or alkyl polyglucoside) may be useful for the
present embodiments. In various embodiments, the compositions of the present
invention comprise cocoarnidopropyl betaine in an amount of about 0.1 to about
4.5%, about 1 to about 4.25%, about 1%, about 4.2%, about 1.2% or about 4% by
weight of the total composition.
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=
[000191 In various embodiments, the compositions comprise a non-
ionic
surfactant such as, e.g., a polyethoxylated alcohol. An example of an
alkoxylated
alcohol non-ionic surfactant that may be useful, for the.present invention
includes a
composition of Formula I:
CH3(CH4in--(0-CH2-CH2)n-OH, (I)
wherein m is 7 to 15; and n represents an average degree of ethoxylation for
the
mixture of about 1 to about 15. In various embodiments, the surfactants used
are
one or more mixtures comprising compounds of the above formula wherein n is 7,
to 9 or 2 to 3. The polyethoxylated alcohol may be, for example, a mixture of
compounds of Formula I wherein m is 8 to 10, and n represents an average
degree
of ethoxylation for the mixture of about 1 to about 15.
(000201 In various embodiments, the non-ionic surfactant
present in the
compositions of the present invention may be aliphatic ethoxylated nonionic
surfactants, for example, those that are commercially well known and include
the
primary aliphatic alcohol ethoxylates and secondary aliphatic alcohol
ethoxylates.
The length of the polyethenoxy chain can be adjusted to achieve the desired
balance between the hydrophobic and hydrophilic elements.
1000211 The nonionic surfactant class also may include the
condensation
products of a higher alcohol (e.g., an alkanol containing 8 to 16 carbon atoms
in a
straight or branched chain configuration) condensed with about 2 to about 20
moles of ethylene oxide, for example, lauryl or myristyl alcohol condensed
with
about 16 moles of ethylene oxide (E0), tridecanol condensed with about 6 to
about
15 moles of EO, myristyl alcohol condensed with about 10 moles of EO per mole
of
myristyl alcohol, the condensation product of EO with a cut of coconut fatty
= alcohol containing a mixture of fatty alcohols with alkyl chains varying
from 10 to
14 carbon atoms in length and wherein the condensate contains either about 6
moles of EO per mole of total alcohol or about 9 moles of EO per mole of
alcohol
and tallow alcohol ethoxylates containing about 6 E0 to about 11 EO per mole
of
alcohol.
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1000221 Illustrative examples of the foregoing nonionic
surfactants include,
but are not limited to, the Neodol or Dobanol ethoxylates (Shell Co.), which
are
higher aliphatic, primary alcohol containing 9 to 15 carbon atoms, such as C9-
C11
alkanol condensed with about 4 to about 10 moles of ethylene oxide (Neodol 91-
8 ,
Dobanol 91-8 , Neodol 91-59 or about 2.5 moles of ethylene oxide (Neodol 91-
2.5 ,
C12_C13 alkanol condensed with about 6.5 moles ethylene oxide (Neodol 23-
6.50),
C12.C15 alkanol condensed with about 12 moles ethylene oxide (Neodol 25-12 ),
C4..
C15 alkanol condensed with about 13 moles ethylene oxide (Neodol 45-130), and
the
like. Such ethoxamers have an HLB (hydrophobic lipophilic balance) value of
about 8 to about 15 and give good 0/ W emulsification, whereas ethoxamers with
HLB values below 7 contain less than 4 ethyleneoxide groups and tend to be
poor
emulsifiers and poor detergents. As used throughout the present disclosure,
the
trade names "Neodol" and "Dobanol" can be used interchangeably to refer to the
same compounds, with the respective trade names used according to the
geographies in which they are available.
1000231 Additional satisfactory water soluble alcohol ethylene
oxide
condensates include, but are not limited to, the condensation products of a
secondary aliphatic alcohol containing 8 to 18 carbon atoms in a straight or
= branched chain configuration condensed with 5 to 30 moles of ethylene
oxide. =
Examples of commercially available nonionic detergents of the foregoing type
include Cu-C3.5 secondary alkanol condensed with either 9 EO (Tergitol 15-S-
90) or
12 EO (Tergito115-S-12 ) marketed by Union Carbide (USA).
[000241 The water soluble nonionic surfactants, which can be
utilized in this
invention, also include aliphatic ethoxylated/propoxylated nonionic
surfactants,
= which are depicted by the formulas:
R ¨0 ¨CH2CH20)),---(CH2CH.2CH20)y¨H
or
CH3
R-0 ¨CH2CH20)x¨(CH2CH 0)y ¨H
wherein R is a branched chain alkyl group having 10 to 16 carbon atoms, or an
7
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isotridecyl group and x and y are independently numbered from 0 to 20. In
certain
embodiments, the ethoxylated/propoxylated nonionic surfactant is Plurafac 300
manufactured by BASF (New Jersey, USA). = =
1000251 In various embodiments, the compositions of the present
invention
may comprise one or more ionic surfactants. For example, the compositions of
the
present invention may comprise an anionic surfactant. The anionic surfactant
may
be any of the anionic surfactants known or previously used in the art of
aqueous
surfactant compositions. Suitable anionic surfactants include, but are not
limited to,
alkyl sulfates, alkyl ether sulfates, alkaryl sulfonates, alkyl succinates,
alkyl
sulfosuccinates, N-alkoyl sarcosinates, alkyl phosphates, alkyl ether
phosphates,
alkyl ether carboxylates, alkylamino acids, alkyl peptides, alkoyl taurates,
carboxylic
acids, acyl and alkyl glutamates, alkyl isethionates, and alpha-olefin
sulfonates;
especially their sodium, potassium, magnesium, ammonium and mono-, di- and
triethanolamine salts. The alkyl groups generally contain 8 to 18 carbon atoms
and
may be unsaturated. The alkyl ether sulfates, alkyl ether phosphates and alkyl
ether
carboxylates may contain, in various embodiments, 1 to 10 or 1 to 3 ethylene
oxide or
propylene oxide units per molecule.
[000261 Examples of suitable anionic surfactants include sodium and
ammonium laurvl ether sulfate (with 1, 2 or 3 moles of ethylene oxide),
sodium, '
ammonium, and triethanolamine lauryl sulfate, disodium laureth sulfosuccinate,
sodium cocoyl isethionate, sodium C12-C14 olefin sulfonate, sodium laureth-6
carboxylate, sodium C12-C13.pareth sulfate, sodium methyl cocoyl taurate,
sodium
= dodecylbenzene sulfonate, sodium cocoyl sarcosinate, triethanolainine
monolauryl
phosphate, and fatty acid soaps. =
100027] The compositions of the present invention may additionally
include an
organic solvent, e.g., a lower alkanol, a glycol ether or diether such as, for
example,
ethanol, propylene glycol, ethylene glycol, dipropylene glycol n-butyl ether,
propylene glycol n-butyl ether or a phenoxyalkanol such as, for example,
phenoxyethanol, phenoxyisopropanol; or mixtures or any of the above-described
organic solvents. For example, in certain embodiments, the compositions of the
present invention may include at least one ingredient chosen from ethanol,
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propylene glycol n-butyl ether or dipropylene glycol monobutyl ether. When
present in various embodiments, the organic solvent may be present in an
amount of
= about 1. to about 10%, about 2 to about 8%, about 3 ,to about 6%, about
3.5 to about
5.5% or about 5% by weight of the composition. In certain embodiments, the
compositions of the present invention comprise about 1 to about 3% ethanol and
about 2.5 to about 3.5% propylene glycol n-butyl ether or dipropylene glycol
monobutyl ether.
1000281 The compositions of the present invention may also include one
or
= more solubilizing agents, such as, for example, hexylene glycol,
pentaethylene glycol
hexyl ether, triethylene glycol hexyl ether, sodium chloride and/or sodium
cuniene
or sodium xylene sulfonate. In certain embodiments, the compositions of the
preseht
invention may comprise about 05 to about 3% sodium cumene sulfonate.
1000291 The compositions of the present invention may further comprise
polymers such as hydrophobically modified polycaboxylic acids and/ polyacrylic
sodium salts, and/or dispersants that are surfactant-soluble carboxylated
polyelectrolyte copolymers; for example, sodium salts of Cs olefin/maleic acid
=
copolymers having a molecular weight of about 5,000 to about 15,000, wherein
the,
copolymers contain about 10 % to about 90% of C8 olefin monomer. Examples of
commercially available copolymers of the foregoing type include, for example,
carboxylated polyelectrolyte copolymers such as those available under the
trade
name "Acusol 460 NK" from Rohm and Haas, Inc. (Pennsylvania, USA) or "Sokalan
CP9" from BASF (New Jersey, USA)) In various embodiments, the polymer may be
present in amounts of about 0.1% to about 2%, about 0.2 to about 1.5%, or
about
0.25% to about 1% by weight of the composition.
[000301 The alkaline cleaning compositions of the present invention
may also
comprise one or more amines, such as, for example, alkanolamines and
derivatives
thereof. Examples of useful alkanolamines include monoa]kanolamines,
dialkanolamines or trialkanolamines or mixtures thereof. In certain
embodiments,
the amine is an alkanolamine chosen from monoethanolarnine, diethanolamine,
triethanolamine or mixtures thereof. For example, useful monoalkanolamines
include those having alcohol moieties with carbon chains having 1 to 4
carbons.
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Generally, the amines serve primarily as solvents but may also provide
buffering
capacity during use. The amines may also contribute to the shine/residue
performance of the cleaning composition. For t xampre, one useful
monoalkanolamine for the embodiments of the present invention is
monoethanolamine.
[000311 Zwitterionic surfactants may also be useful for the present
invention.
Such surfactants contain both a cationic group and an anionic group. Preferred
zwitterionic surfactants of the present invention contain both a quaternary
ammonium group and an anionic group selected from sulfonate and carboxylate
groups. These anionic groups are desirable as they tend to maintain their
amphoteric character over most of the pH range of the formulation. In certain
embodiments, the zwitterionic surfactant used is cocamidopropyl betaine.
1000321 The non-ionic synthetic organic surfactants which are employed in
the described composition are generally the condensation product of an organic
aliphatic or alkyl aromatic hydrophobic compound containing a terminal
hydroxy,
group and hydrophilic ethylene oxide group. Such detergents are prepared
readily
by condensing the hydrophobic organic compound with ethylene oxide or with the
polyhydration product thereof, polyethylene glycol. Further, the length of the
polyethenoxy chain can be adjusted to achieve the desired balance between the
hydrophobic and hydrophilic elements. -
1000331 The non-ionic surfactants include the condensation products of a =
higher alcohol (e.g., an alkanol containing 8 to 18 carbon atoms in a straight
chain
or branched chain configuration) condensed with about 2 to about 30 moles of
ethylene oxide, for example, lauryl or myristyl alcohol condensed with about 6
moles of EO, myristyl alcohol condensed with about 10 moles of EO per mole of
rnyristyl alcohol, the condensation product of E0 with a cut of coconut fatty
alcohol containing a mixture of fatty alcohols with alkyl chains varying from
10 to
about 14 carbon atoms in length and wherein the condensate contains either
about
6 moles of EO per mole of total alcohol or about 9 moles of EO per mole of
alcohol
and tallow alcohol ethoxylates containing about 6 EO to about 11 EO per mole
of
alcohol.
CA 02826961 2013-09-13
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1000341 Ionic surfactants which can be used in the present invention
th.e
preferably anionic surfactants. Such surfactants are useful to enhance the
stability
of the formulation as well as to provide additional.degr.easing activity.
Suitable
water-soluble anionic surfactants include those surface-active or detergent
, compounds which contain an organic hydrophobic group containing generally 8
to
26 carbons and preferably 10 to 18 carbon atoms in their molecular structure
and at
least one water-solubilizing group which is a sulfonate group, so as to form a
= water-soluble detergent. Usually, the hydrophobic group will include or
comprise
a Cs-C22 alkyl, aryl or acyl group. Other suitable anionic surfactants are the
olefin
sulfonates, including long-chain alkene sulfonates, long-chain hydroxyalkane
, sulfonates or mixtures of alkene sulfonates and hydroxyalkene sulfonates. In
certain embodiments,- the anionic surfactants used include alkyl sulfonates,
alkyl
=
aryl sulfonates and aryl alkyl sulfonates, e.g., C12-C16 paraffin sulfonate.
=
1000351 The cleaning composition of the present invention comprises at
least
one organic solvent. Such organic solvents may include, for example,
C2_C5monb,
dihydroxy, or polyhydroxy alkanols and/or an ether or diether, such as
ethanol, '
isopropanol, dipropylene glycol methyl ether, diproyleneglycol monobutyl
ether,
propylene glycol n-butyl ether, and mixtures thereof. In certain embodiments,
the
organic solvent is freely soluble in water. In certain embodiments, the
organic
solvent is at least one of ethanol and dipropylene glycol methyl ether, both
of
Which are miscible with water. In various embodiments, the organic solvent is -
present in an amount of about 1 to about 3%, about 1.5 to about 2.5% or about
2% =
by weight of the total composition.
1000361 In certain embodiments, the present invention also provides
methods
for removing burnt-on and/or baked-on soil or grease from a surface,
comprising
applying a formulation of the invention to the surface, and removing the
formulation, e.g., by rinsing with a solvent such as water or wiping with a
cloth,.
sponge, brush, scrubbing implement or the like. =
1000371 The compositions may optionally further comprise one or more
other
desirable constituents including, but not limited to: water, a perfume or
fragrance,
an abrasive agent, a disinfectant, a dye, a radical scavenger, a sequestering
agent, a
-11
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thickening agent, such as an acrylate polymer, a chelating agent, a
preservative or
=
a mixture of any of these constituents.
[000381 The compositiOns asprovided herein are described and claimed
with
reference to their ingredients, as is usual in the arl. As w.ould be.evident
to one
skilled in the art, the ingredients may in some instances react with one
another, so ,
that the true composition of the final formulation may not correspond exactly
to the
ingredients listed. Thus, it should be understood that the invention extends
to the
product of combination of the listed ingredients..
[00039] In other embodiments, the present invention is directed to
methods of
. preparing a composition comprising combining the ingredients as set forth
for any
of the foregoing formulations; in other embodiments, the method may comprise
dilution of the various ingredients with water. In other embodiments, the
present
invention is directed to.rnethods of removing burnt-on or baked-on soil or
grease
from a surface, comprising the step of applying the cleaning composition of
claim 1
onto the surface, as well as cleaning systems comprising the present
compositions in
a spray bottle with a nozzle.
1000401 The invention can be further illustrated by the following non-
limiting
Example. -
Example
= 100041] Compositions according to the present invention were
prepared. The
details are shown below:
Ingredient Formulation A Formulation B
Monoethanola mine 1.9 1.9
Caustic soda (NaOH) 0.32 0.7
Citric acid 0.6 1.9
C9-11 alcohol EO 2.5:1 0.5 0.5
Cocoamidopropylbetaine (zWitterionic surfactant) = 1.20 4
Propylene glycol mono n-butyl ether 3 = 3
Ethanol 2 2
AcusolTm 460NK(thickener) = 0.25 =1
' 12
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Ingredient Formulation A
Formulation B
Sodium cumene sulfonate (anionic surfactant) 0.6 1.6
a
Perfume 0.33 0.33
Water, Minors QS QS
PH 11 11
(000421
Formulations A and B exhibited superior efficacy against burnt-on
soil, grease, burnt-on gravy sauce, baked-on soil, and provided improved
residue
pattern shine over known compositions in the art.
13
