WAXLESS COMPOSITION FOR CLEANING AND POLISHING ACRYLIC AND GLASS SURFACES

COMPOSITION SANS CIRE POUR NETTOYER ET POLIR LES SURFACES D'ACRYLIQUE ET DE VERRE

English Abstract

The invention relates to a waxless composition
for cleaning and polishing acrylic and glass surfaces,
which consists of a water-in-oil emulsion comprising
water, naphtha mineral spirits, an abrasive, an
anti-static agent, a thickening agent, dimethoxysilyl-
dimethylamino-ethylaminopropyl siloxane, an aminofunctional
siloxane capable of reacting with the
dimethoxysilyl-dimethylamino-ethylaminopropyl siloxane to
form a cross-linked siloxane film and at least one emulsifying
agent having hydrophilic functional groups. The
dimethoxysilyl-dimethylamino-ethylaminopropyl siloxane
and aminofunctional siloxane are sufficiently diluted to
prevent reaction with one another in the emulsion so that
when the composition is applied to an acrylic or glass
surface and the water evaporates, the aminofunctional
siloxane reacts with the dimethoxysilyl-dimethylamino-
ethylaminopropyl siloxane to form the cross-linked
siloxane film. Such a film imparts to the surface a
uniform high gloss and water repellency, and efficiently
protects the surface against wear and tear caused by
dust, cigarette smoke and fingerprints.

French Abstract

L'invention concerne une composition sans cire pour nettoyer et polir les surfaces d'acrylique et de verre qui est constituée d'une émulsion eau-dans-huile comprenant de l'eau, des essences minérales à base de naphta, un abrasif, un agent anti-statique, un agent épaississant, du diméthoxysilyl- diméthylamino-éthylaminopropylsiloxane, un siloxane aminofonctionnel capable de réagir avec le diméthoxysilyl-diméthylamino-éthylaminopropylsiloxane pour former une pellicule de siloxane réticulé et au moins un agent émulsifiant portant des groupes fonctionnels hydrophiles. Le diméthoxysilyl-diméthylamino-éthylaminopropylsiloxane et le siloxane aminofonctionnel sont suffisamment dilués pour prévenir la réaction entre les deux dans l'émulsion de manière que lorsque la composition est appliquée sur une surface d'acrylique ou de verre et que l'eau s'évapore, le siloxane aminofonctionnel réagit avec le diméthoxysilyl-diméthylamino-éthylaminopropylsiloxane pour former la pellicule de siloxane réticulé. Cette pellicule confère à la surface un brillant élevé uniforme et un caractère hydrofuge, et protège efficacement la surface contre l'usure causée par la poussière, la fumée de cigarette et les empreintes digitales.

Claims

The embodiments of the invention in which an exclusive
property or privilege is claimed are defined as follows:
1. A waxless composition for cleaning and polish-
ing acrylic and glass surfaces, which consists of a
water-in-oil emulsion comprising water, naphtha mineral
spirits, an abrasive, an anti-static agent, a thickening
agent, dimethoxysilyl-dimethylamino-ethylaminopropyl
siloxane, an aminofunctional siloxane capable of reacting
with the dimethoxysilyl-dimethylamino-ethylaminopropyl
siloxane to form a cross-linked siloxane film and at
least one emulsifying agent having hydrophilic functional
groups, wherein the dimethoxysilyl-dimethylamino-ethyl-
aminopropyl siloxane and aminofunctional siloxane are
sufficiently diluted to prevent reaction with one another
in said emulsion so that when said composition is applied
to an acrylic or glass surface and the water evaporates,
said aminofunctional siloxane reacts with said
dimethoxysilyl-dimethylamino-ethylaminopropyl siloxane to
form said cross-linked siloxane film.
2. A composition according to claim 1, wherein the
water is present in an amount ranging from about 45 to
about 65% by weight, based on the total weight of the
composition.
3. A composition according to claim 2, wherein the
amount of water is about 57% by weight.
4. A composition according to claim 1, wherein the
naphtha mineral spirits are present in an amount ranging
from about 5 to about 15% by weight, based on the total
weight of the composition.
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5. A composition according to claim 4, wherein the
amount of naphtha mineral spirits is about 10% by weight.
6. A composition according to claim 1, 4 or 5,
wherein the naphtha mineral spirits comprise refined
petroleum naphthas having a flash point of 100°F with
initial and final boiling points of 310°F and 400°F.
7. A composition according to claim 1, wherein the
abrasive is present in an amount ranging from about 10 to
about 20% by weight, based on the total weight of the
composition.
8. A composition according to claim 7, wherein the
amount of abrasive is about 15% by weight.
9. A composition according to claim 1, 7 or 8,
wherein the abrasive is aluminum silicate having a median
particle size of about 0.7
10. A composition according to claim 1, wherein the
anti-static agent is present in an amount ranging from
about 0.2 to about 0.8% by weight, based on the total
weight of the composition.
11. A composition according to claim 10, wherein
the amount of anti-static agent is about 0.5% by weight.
12. A composition according to claim l, 10 or 11,
wherein the anti-static agent comprises a blend of
polyethylene glycol 50 tallow amine and N-C12-C18-alkyl
N-dimethyl N-benzyl ammonium chloride in admixture with
at least one organic solvent.
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13. A composition according to claim 12, wherein
the anti-static agent comprises about 30-60 wt.% of
polyethylene glycol 50 tallow amine, about 10-30 wt.% of
N-C12-C18-alkyl N-dimethyl N-benzyl ammonium chloride,
about 10-30 wt.% of isopropyl alcohol and about 1-5 wt.%
of ethanol.
14. A composition according to claim 1, wherein the
thickening agent is present in an amount ranging from
about 0.5 to about 2.5% by weight, based on the total
weight of the composition.
15. A composition according to claim 14, wherein
the amount of thickening agent is about 1.5% by weight.
16. A composition according to claim 1, 14 or 15,
wherein the thickening agent is an anionic acrylic
emulsion.
17. A composition according to claim 1, wherein the
dimethoxysilyl-dimethylamino-ethylaminopropyl siloxane is
present in an amount ranging from about 2 to about 5% by
weight, based on the total weight of the composition.
18. A composition according to claim 17, wherein
the amount of dimethoxysilyl-dimethylamino-ethylamino-
propyl siloxane is about 3% by weight.
19. A composition according to claim 17 or 19,
wherein the aminofunctional siloxane is present in an
amount ranging from about 0.5 to about 1.5% by weight,
based on the total weight of the composition.
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20. A composition according to claim 19, wherein
the amount of aminofunctional siloxane is about 1% by
weight.
21. A composition according to claim 1, wherein the
emulsifying agent comprises a mixture of a silicone
surfactant and a co-emulsifying agent.
22. A composition according to claim 21, wherein
the silicone surfactant is present in an amount ranging
from about 5 to about 10% by weight, based on the total
weight of the composition.
23. A composition according to claim 22, wherein
the amount of silicone surfactant is about 7.5% by
weight.
24. A composition according to claim 21, 22 or 23
wherein the silicone surfactant is a cyclomethicone and
dimethicone copolymer.
25. A composition according to claim 21, wherein
the co-emulsifying agent is present in an amount ranging
from about 0.5 to about 1.5% by weight, based on the
total weight of the composition.
26. A composition according to claim 25, wherein
the amount of the co-emulsifying agent is about 1% by
weight.
27. A composition according to claim 21, 25 or 26,
wherein the co-emulsifying agent is polyoxyethylene 20
sorbitan monolaurate.
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28. A composition according to any one of claims 1
to 27, further including an anti-freeze agent.
29. A composition according to claim 28, wherein
the anti-freeze agent is present in an amount ranging
from about 0.5 to about 2.5% by weight, based on the
total weight of the composition.
30. A composition according to claim 29, wherein
the amount of anti-freeze agent is about 1.5o by weight.
31. A composition according to claim 28, 29 or 30,
wherein the anti-freeze agent is sodium citrate.
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Description

~ ~9~81 ~
WAXLESS COMPOSITION FOR CLEANING AND
POLISHING ACRYLIC AND GLASS SURFACES
The present invention pertains to improvements
in the field of polish formulations. More particularly,
the invention relates to a waxless composition for
cleaning and polishing acrylic and glass surfaces.
Polishes are used to produce a glossy finish on
a surface as well as to prolong the useful like of the
surface. The gloss provided by the polish is the result
of components in the polish which leave coating or film
and that function to smooth and clean the surface.
Hitherto known cleaning formulations for
acrylic and glass surfaces do not provide a glossy and
protective film which protects the surface against wear
and tear caused by dust, cigarette smoke and
fingerprints. On the other hand, known polish
formulations for acrylic and glass surfaces generally
contain a wax as a polish ingredient and film-forming
material. Some wax compositions are easy to apply and
rub-off, but do not provide high gloss or extended water
beading. Other wax compositions may be difficult to apply
and rub-off, but provide durability for extended periods
of time. Durability is generally measured by the user in
terms of finish and water beading properties. Moreover,
these wax compositions leave marks "of application" or
smearing on the surface.
It is therefore an object of the present
invention to overcome the above drawbacks and to provide
a waxless composition for cleaning and polishing acrylic
and glass surfaces, which results in a glossy and
protective film.

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In accordance with the invention, there is thus
provided a waxless composition for cleaning and polishing
acrylic and glass surfaces, which consists of a water-in-
oil emulsion comprising water, naphtha mineral spirits,an abrasive, an anti-static agent, a thickening agent,
dimethoxysilyl-dimethylamino-ethylaminopropyl siloxane,
an aminofunctional siloxane capable of reacting with the
dimethoxysilyl-dimethylamino-ethylaminopropyl siloxane to
form a cross-linked siloxane film and at least one emul-
sifying agent having hydrophilic functional groups. The
dimethoxysilyl-dimethylamino-ethylaminopropyl siloxane
and aminofunctional siloxane are sufficiently diluted to
prevent reaction with one another in the emulsion so that
when the composition is applied to an acrylic or glass
surface and the water evaporates, the aminofunctional
siloxane reacts with the dimethoxysilyl-dimethylamino-
ethylaminopropyl siloxane to form the cross-linked
siloxane film. Such a film imparts to the surface a
uniform high gloss and water repellency, and efficiently
protects the surface against wear and tear caused by
dust, cigarette smoke and fingerprints.
Dimethoxysilyl-dimethylamino-ethylaminopropyl
siloxane is sold under the trade-mark DOW CORNING 531
fluid by Dow Corning Corporation. DOW CORNING 531 fluid
comprises 49 wt.% of dimethoxysilyl-dimethylamino-
ethylaminopropyl siloxane, 34 wt.% of Stoddard solvent,
wt.% of isopropyl alcohol and 1 wt.% of 1,2,4-
trimethyl-benzene. The aminofunctional siloxane, on the
other hand, is available under the trade-mark DOW CORNING
536 fluid from Dow Corning Corporation. DOW CORNING 531
and 536 fluids are not soluble in water and hydrolyze
rapidly when placed in intimate contact with water. In
mineral spirits, DOW CORNING 531 fluid shows light

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precipitation or incomplete solubility. Applicant has
found that by formulating these two fluids into a water-
in-oil emulsion, one can produce a stable polish that
does not lose performance benefits with age. The use of
naphtha mineral spirits, on the other hand, prevents the
deposition on the acrylic or glass surface of greasy
residues, which has been encountered with other organic
solvents.
According to a preferred embodiment, the
dimethoxysilyl-dimethylamino-ethylaminopropyl siloxane is
present in the composition in an amount ranging from
about 2 to about 5% by weight, preferably about 3% by
weight, based on the total weight of the composition.
When using DOW CORNING 531 fluid which contains about 50
wt.% of dimethoxysilyl-dimethylamino-ethylaminopropyl
siloxane, such a fluid is generally present in the
composition in an amount of about 4 to about 10% by
weight, preferably about 6% by weight, based on the total
weight of the composition. The aminofunctional siloxane,
on the other hand, is generally present in an amount
ranging from about 0.5 to about 1.5% by weight,
preferably about 1% by weight, based on the total weight
of the composition.
The water is generally present in an amount
ranging from about 45 to about 65% by weight, preferably
about 57% by weight, based on the total weight of the
composition.
The naphtha mineral spirits are generally
present in an amount ranging from about 5 to about 15% by
weight, preferably about 10% by weight, based on the
total weight of the composition. Preferably, the naphtha
mineral spirits comprise refined petroleum naphthas

0 2 ~98 8 ~ 3
having a flash point of 100~F with initial and final
boiling points of 310~F and 400~F.
The abrasive is generally present in an amount
ranging from about 10 to about 20% by weight, preferably
about 15% by weight, based on the total weight of the
composition. Examples of suitable abrasives include
aluminum silicate, diatomaceous earth, pumice, fullerls
earth, bentonite, silica, tripoli, hydrated calcium
silicate, chalk, colloidal clay, magnesium oxide, red ion
oxide and tin oxide. Preferably, use is made of aluminum
silicate having a median particle size of about 0.7 u,
which is available under the trade-mark KAOPOLITE SF from
Kaopolite, Inc.
The anti-static agent is generally present in
an amount ranging from about 0.2 to about 0.8% by weight,
preferably about 0.5% by weight, based on the total
weight of the composition. Preferably, the anti-static
agent comprises a blend of polyethylene glycol 50 tallow
amine and N-C12-C1g-alkyl N-dimethyl N-benzyl ammonium
chloride in admixture with at least one organic solvent,
such as the anti-static agent which is sold under the
trade-mark STEPWAX and which comprises about 30-60 wt.%
of polyethylene glycol 50 tallow amine, about 10-30 wt.%
of N-C12-C1g-alkyl N-dimethyl N-benzyl ammonium chloride,
about 10-30 wt.% of isopropyl alcohol and about 1-5 wt.%
of ethanol.
The thickening agent is generally present in an
amount ranging from about 0.5 to about 2.5% by weight,
preferably about 1.5% by weight, based on the total
weight of the composition. Preferably, the thickening
agent is an anionic acrylic emulsion which is available

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under the trade-mark ACUSOL 820 from ROHM and HASS
Canada, Inc.
According to a preferred embodiment, the
emulsifying agent comprises a mixture of a silicone
surfactant and a co-emulsifying agent. The silicone
surfactant is generally present in an amount ranging from
about 5 to about 10% by weight, preferably about 7.5% by
weight, based on the total weight of the composition.
Preferably, the silicone surfactant is a cyclomethicone
and dimethicone copolymer which is available under the
trade-mark DOW CORNING 3225 C from Dow Corning
Corporation. The co-emulsifying agent, on the other hand,
is generally present in an amount ranging from about 0.5
to about 1.5% by weight, preferably about 1% by weight,
based on the total weight of the composition. Preferably,
the co-emulsifying agent is polyoxyethylene 20 sorbitan
monolaurate which is sold under the trade-mark TWEEN 20
by I.C.I.
According to another preferred embodiment, the
composition further includes an anti-freeze agent such as
sodium citrate, in order to improve the freeze-thaw
stability of the composition. The anti-freeze agent is
generally present in an amount ranging from about 0.5 to
about 2.5% by weight, preferably about 1.5% by weight,
based on the total weight of the composition.
The composition according to the invention is
easy to apply and rub-off. It provides a durable
protective film which strongly adheres to an acrylic or
glass surface and imparts thereto a uniform high gloss
and water repellency. Such a film efficiently protects
the surface against wear and tear caused by dust,
cigarette smoke and fingerprints.

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The following non-limiting example illustrates
the invention.
EXAMPLE
A waxless composition for cleani.ng and
polishing acrylic and glass surfaces was prepared from
the following ingredients:
Ingredients Percent by weight
PART A:
Water 54.5
KAOPOLITE SF 15.0
PART B:
20 Mineral Spirit 9.5
DOW CORNING 3225 C 7.5
PART C:
DOW CORNING 531 fluid 6.0
DOW CORNING 536 fluid 1.0
PART D:
30 Sodium citrate 1.0
Water 1.0
PART E:
TWEEN 20 1.0

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STEPWAX 0.5
ACUSOL 820 1.5
Water 1.5
Parts "B" and "C" were loaded into a mixing
vessel and mixed until uniform. The ingredients of part
"A" were separately mixed and added to the vessel with
turbulent mixing. The mixing was continued until a
uniform water-in-oil emulsion was formed. After the
emulsion has been formed, parts "D" and "E" were added.
All the ingredients were then mixed at high speed.