Note: Descriptions are shown in the official language in which they were submitted.
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DURABLE GRAPHENE EXTERIOR PLASTIC COATING COMPOSITION
RELATED APPLICATIONS
[0001] This
application claims priority benefit of US Non-Provisional Application
Serial Number 17/824,971, filed May 26, 2022, that in turn claims priority to
US Provisional
Application Serial Number 63/195,206, filed June 1, 2021; the contents of both
the
aforementioned applications are hereby incorporated by reference.
FIELD OF THE INVENTION
[0002] The
present invention in general relates to a composition for restoring and
maintaining surfaces and a process for the use thereof and in particular, to
such a composition
amenable to application to a variety of substrates primarily related to
vehicle trim or headlight
plastic, or moldings.
BACKGROUND OF THE INVENTION
[0003] The
modern automobile and other transportation vehicles have an increased
amount of exterior trim and moldings made of plastic and rubber based on their
unique material
properties. These materials, based primarily on polypropylene, provide
aesthetics, light
weight, corrosion resistance, strength, and flexibility of design. However,
these polymers on
the exterior of a vehicle, are almost constantly subjected to the adverse
effects of ultraviolet
(UV) rays, seasonal temperature changes, rain, snow, ozone, and other
environmental
contaminants. If not properly cared for, the weathering elements will cause
the exterior trim
and molding to age prematurely (degradation), and the surface of the trim to
become dull,
faded, and cracked.
[0004] Current
consumer trim restoration products used to treat and restore faded
exterior trim and moldings back to their near-show-room condition use silicone
oil (e.g.
polydimethylsiloxane (PDMS)) or wax in one of a water-based, solvent-based, or
black dye
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pigment solution. While these trim restoration formulations are generally easy
and safe for
consumers to apply without specialized training or equipment, these
formulations do not adhere
strongly to the surface to which they are applied, nor do they form high
adhesion and high
cohesion films. Therefore, these consumer trim restoration formulations fail
to endure car wash
cycles and prematurely wear off from the applied surfaces that the
formulations are intended
to protect.
[0005] In the
professional original equipment manufacturer (OEM) market, available
trim restoration products utilize reactive chemistry to form a durable
coating. However, these
professional trim restoration products are very costly both chemically and in
terms of required
capital equipment. Current professional trim restoration products also require
delicate process
control to obtain a durable smooth finish. Moreover, these products are mostly
toxic or harmful
to the user and the environment.
[0006]
Therefore, attempts to bring professional OEM trim restoration products to the
consumer do-it-yourself (DIY) space present many challenges. A first challenge
is the creation
of a formulation that forms a good coating without streaking or bubbling, also
are self-leveling
and applied with a simple wipe-on application without complicated process
control equipment
so as to be suitable for an untrained consumer A second challenge relates to
the difficulty of
replacing solvents being used to dissolve the reactive chemistries thereby
making the
formulations safer for home usage and ideally with limited or no volatile
organic compound
(VOC) content.
[0007] Thus,
there exists a need for a long lasting and durable vehicle trim and molding
restoration composition for the consumer market that is easy to apply and is
safe for the user
and the environment. There also exists a need for sealant composition to
protect headlight
plastic surfaces.
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SUMMARY OF THE INVENTION
[0008] A restorative and protective composition for application to a
substrate is
provided that includes a silicone silane, a graphene slurry, a carrier, and an
adhesion promoter.
The composition leaves a durable film on a substrate when dried.
[0009] A process is provided for applying a restorative and protective film
to a
substrate. The process includes applying the composition that forms the
restorative and
protective film to the substrate and removing excess from the surface to form
the film. The
applying is with a spray or a liquid poured onto woven or non-woven fabric or
sponge, or a
soaked wipe.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010] The subject matter that is regarded as the invention is particularly
pointed out
and distinctly claimed in the claims at the conclusion of the specification.
The foregoing and
other objects, features, and advantages of the invention are apparent from the
following detailed
description taken in conjunction with the accompanying drawings wherein:
[0011] FIGS. 1A and 1B are portions of a depiction of a vehicle trim part
showing the
trim part with a treated portion (FIG. 1A) treated with an embodiment of the
inventive
restorative and protective composition after five months and with an untreated
portion (FIG.
1B) of the surface; and
[0012] FIGS. 2A -2C are portions of a depiction of an aged headlight that
has hazy
surface as shown in FIG. 2A, that was wet sanded and to which was applied an
inventive
composition to provide optical clarity and protection to the headlights (FIG.
2B), after 5
months, the treated headlight of FIG. 2B remained clear and protected from
weathering (FIG.
2C).
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DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0013] The
present invention has utility as a trim and molding restorative and protective
composition that forms a coating on a plastic substrate to render the
underlying substrate
protected from the adverse effects of ultraviolet (UV) rays, heat, rain, snow,
and other
environmental contaminants. The present invention has the attribute of being
amenable to
application as a wipe-on or spray applied composition that forms a film
without resort to the
complex deposition processes that characterized prior art systems. Embodiments
of the trim
and molding restoration composition adhere strongly to the surface to which
they are applied
and form a high adhesion high cohesion film. Therefore, embodiments of the
trim and molding
restoration composition are able to endure car wash cycles and do not wear off
rapidly from
the applied target surfaces compared to conventional coatings. As a result of
the durability of
the restorative and protective film imparted to a substrate by the inventive
composition, the
substrate needs to have protective treatments less often. An inventive
composition is also
amenable to formulation independent of, and therefore devoid of volatile
organic compounds
(VOCs).
[0014] While
the present invention is further detailed with respect to application to
vehicle trim and molding such as a bumper cover, it is appreciated that an
inventive
composition is readily applied to numerous other substrates to impart
protective films thereto.
To the extent that an inventive composition is described herein with respect
to total weight
percentage of various components, these amounts are provided independent of
propellants that
are used in pressurized aerosol packages.
[0015] Unless
indicated otherwise, explicitly or by context, the following terms are
used herein as set forth below.
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[0016] As used
in the description of the invention and the appended claims, the singular
forms "a," "an" and "the" are intended to include the plural forms as well,
unless the context
clearly indicates otherwise.
[0017] Also, as
used herein, "and/or" refers to and encompasses any and all possible
combinations of one or more of the associated listed items, as well as the
lack of combinations
when interpreted in the alternative ("or").
[0018] It is to
be understood that in instances where a range of values are provided that
the range is intended to encompass not only the end point values of the range
but also
intermediate values of the range as explicitly being included within the range
and varying by
the last significant figure of the range. By way of example, a recited range
of from 1 to 4 is
intended to include 1-2, 1-3, 2-4, 3-4, and 1-4.
[0019] As used
herein, a coating is defined as a layer of cured material having a
thickness of between 0.01 and 1000 microns. As used herein a coating is
synonymous with a
film.
[0020] As used
herein, molecular weight with respect to a polymeric material
references to average number molecular weight as measured by gel permeation
chromatography (GPC).
[0021] As used
herein, graphene is defined as a two-dimensional material constructed
by close-packed carbon atoms including a single-layer graphene, double-layer
graphene, few-
layer graphene, and graphene nanoplatelets.
[0022] As used
herein double-layer graphene is defined as a stack graphene of two
layers, few-layer graphene is defined as a stack of graphene of 3-10 layers,
graphene
nanoplatelet is defined as a stack of graphene of more than 10 layers. The
graphene materials
can be made by chemical or mechanical exfoliation of graphite, chemical vapor
deposition,
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physical vapor deposition, microwave plasma, sonication/cavitation in solvent,
organic
synthesis, and epitaxy growth on a substrate.
[0023] As used
herein, graphene oxide is defined as graphene with various oxygen-
containing functionalities such as epoxide, carbonyl, carboxyl, and hydroxyl
groups and a total
oxygen content of 10-60 weight percent, typically around 20-50 weight percent.
[0024] As used
herein, reduced graphene oxide is defined as graphene oxide that has
been chemically or thermally reduced with a total oxygen content of typically
in the range of
10-50 precent depending on the extent of the reduction.
[0025] As used
herein, a nanoplatelet is defined as having planar dimensional in
orthogonal direction of each independently between 2 and 20 nanometers.
[0026] An
inventive composition is provided that provides a long lasting durable trim
and molding restoration, protection, and shine coating based on a reactive
silicone silane and
graphene in a non-aqueous carrier to form a stable solution that is both clear
and transparent in
some inventive embodiments. Graphene in the composition weaves into the film
matrix and
imparts excellent hardness to the resulting residual shiny coating. In some
embodiments of the
present invention, an adhesion promoter is also present. In still other
embodiments, the
inventive composition includes a propellant to afford a pressurized aerosol
container for
dispensing onto a target substrate. Different application methods for
embodiments of the hard
surface treatment composition. illustratively include using aerosol spray,
liquid spray, or wipes
to deliver the hard surface treatment composition to the automotive and other
hard surfaces.
[0027] A
strong, durable, and lasting shine coating on a target substrate is obtained
from an inventive composition. An inventive coating is obtained from the cured
reaction
product of reactive silicone silanes in which graphene is dispersed. Graphene
weaves and
interlocks into the matrix of the coating film, reinforcing the hardness and
durable properties
of the coating. Reactive silicone silanes operative in the present invention
illustratively include
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polysilsesquioxanes, silicone MQ resins, and silicone MTQ resins, where M is
(CH3)3SiO, Q
is SiO4,and T is (CH3) SiO3, with the proviso that at least one of M, Q, or T
is modified to
include a reactive terminal group of methoxy, ethoxy, dialkoyl, or trialkoxyl
types. A
polysilsesquioxane has a structure (RSiO3/2)õ where R is the moiety is C1-3
alkyl, vinyl, C1_
3 fluoroalkyl, Ci_3perfluoroalkyl, y-glycidoxypropyl, and y-
methacryloxypropyl; and n is an
interger of from 4 to 5,000. The synthesis and application of precursors to
form a
polysilsesquioxane coating are conventional to the art, as shown for example
in U.S. Pat. No.
3,944,702. An additional class of polysilsesquioxanes operative herein are
multifunctional
silsesquioxanes having at least two moieties per polyhedral assembly. The
synthesis and
application of precursors to form a ladder-type polysiloxanes, and other
organo-functional
silsesquioxanes coating are conventional to the art, as shown for example in
U.S. Pat. No.
5,039,771; U.S. Pat. No. 5,047,492; U.S. Pat. No. 7,256,243; U.S. Pat. No.
7,868,198; and
W002/100867. Exemplary multi-functional polysilsesquioxanes operative herein
include
polycyclic octa-silsesquioxane, triethoxy silylethyl methyl siloxy
silsesquioxane,
tetrahydridodimuthylsiloxyoctasil, tetraoxyethanoltetratriathoxysilylethane
silsesquioxane,
(tetratriethoxysilylethyldimethylsiloxy)(tetraglycidyldimethylsiloxy)octa-
silsesquioxane
(TGTSE), and combinations thereof.
[0028] The
reactive silicone silanes used in the current invention are cured on the
target
substrate to form a coating. The silicone silanes are selected to include
silanol groups inclusive
of hydroxyl moieties that impart solubility in a carrier and are cured on the
target substrate for
form the inventive coating. As a result, solvation of components of an
inventive trim restoration
is simplified compared to higher molecular weight materials that are merely
deposited on the
target substrate by solvent evaporation. A silicone oil or organic solvent is
desirable in reducing
volatile organic content (VOC) emissions in forming a coating compared to
conventional
compositions. Furthermore, curing on the substrate in some inventive
embodiments yields
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coatings that are highly cross-linked and higher molecular weight as compared
to solvent
dissolved or dispersed pre-cured polymers resulting in greater durability
coatings. Typical
viscosity range of the neat reactive silicone silanes in the present invention
are between 20 and
60,000 cps at 25 C per ASTM D1200-10.
[0029] The
condensation of silanol groups in the formulation interlocks graphene
layers into the coating matrix, achieving the desired cure and results in
coatings that are shinny
when observed by an unaided normal human eye under sunlight illumination. The
resulting
graphene-based composite coatings are durable compared to convention trim and
molding
coatings due to graphene reinforcing the hardness and durability properties of
a high degree of
cure and adhesion to the target substrate. The cure in some inventive
embodiments is
accelerated by the addition of catalyst to the formulation.
[0030] Not to
be limited to a particular theory, in inventive embodiments the graphene
is provided in a powder forms or solvent based slurry. Graphene dispersed in a
solvent slurry
is typically present from 0.5 to 80 weight percent of the slurry. The low
surface energy of
graphene also complements silicones in the film coating to inhibit dirt and
debris adhesion and
hardens the resulting film coating against abrasion thereby significantly
improving the trim and
molding restoration composition. Furthermore, the graphene of the composition
can be used to
adjust the hydrophobic or hydrophilic properties of the treated surfaces. As a
result, treated
surfaces shed dust naturally, look cleaner/fresher, and require less manual
maintenance.
[0031] Graphene
is layered sp2 hybridized carbon atoms in a honeycomb-like, 2-
dimensional sheet. Graphene is known to have excellent mechanical strength and
flexibility,
thermal and electric conductivities, and much higher optical cross section
relative to many
polymer coatings. Graphene as used in the present invention is mainly single
layer and with
distribution up to 5 layers. Typical loading of graphene in an inventive
composition range from
0.005 to 30 total weight percent.
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[0032] Graphene-
type materials operative in the present invention include single-layer
graphene, double-layer graphene, few-layer graphene, graphene oxide (GO),
reduced graphene
oxide (rG0), exfoliated graphene nanoplatelets, and ultra-thin graphite
because all of these
materials can enhance properties of compositions to which they are added.
[0033] In
inventive embodiments of the trim restoration composition or headlight
sealant composition, the graphene can be single layer graphene, few-layer
graphene, or multi-
layer graphene nanoplatelet, or a combination thereof. Graphene nanoplatelet
is low cost and
has an easy-handling nature as compared to single layer graphene. The
thickness and size of
graphene or graphene nanoplatelets can be adjusted to meet the processing
requirements,
coating quality, and coating performance needs. In addition to graphene or
graphene
nanoplatelet, other additives may be added in the formulation to provide
different properties
and functionalities. Such additives include but are not limited to graphite,
carbon black, carbon
fibers, carbon nanotubes, metallic or ceramic flakes or particles.
[0034] A
carrier operative in the present invention dissolves or disperses the silicone
silanes that upon cure form a composite matrix with the graphene to become the
shine agent.
Carriers operative herein include silicone oils that include specifically
include
decamethylpentasiloxane, hexamethylcyclotrisiloxane (D3), octamethylcyclo-
tetrasiloxane
(D4), decamethylcyclo-pentasiloxane (D5), dodecamethylcyclo-hexasiloxane (D6),
hexamethyldisiloxane, combinations thereof, and oligiomeric forms that that
have viscosities
of from 2 to 10,000 centistokes (cSt); C4-C24 alkanes, C2-C24 alcohols, C2-C24
ketones, C2-C24
glycols, C4-C24 glymes, and combinations thereof, and typical hydrocarbon
solvents like
isododecane, alcohol, methylethylketone, etc., and combinations thereof; It is
appreciated that
the inclusion of a surfactant promotes miscibility of reactive silicone
silanes in silicone oil
and/or hydrocarbon based solvents. In some inventive embodiments, the organic
solvent is
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VOC exempt. As used herein, "VOC" is defined as a compound listed on the
United States
Environmental Protection Agency Master List of Volatile Organic Compounds
circa 2019.
[0035] An
adhesion promoter is present in some inventive embodiments to promote
bonding of the reactive silicone and graphene to the trim substrate. It is
appreciated that some
adhesion promoters operative herein function in as a cure promoter for the
reactive silicone
silane when present at high concentrations. The loading of an adhesion
promotor in amounts
to promote cure are readily determined by a study of time of cure as a
function of concentration.
Adhesion promoters operative herein illustratively include N-2-aminoethy1-3-
aminopropyltrimethoxysilane, aminopropyltriethoxysilane, C2-C24 carboxamides,
bis 113-
(triethoxysily1)-propylltetrasufide-3-mercapto, 2(diphenylphosphino)ethyl
triethoxysilane, N-
vinylbenzyl-N-2(trimethoxysilylpropylamino)ethyl silane,
trimethoxy silylpropyl-
diethylenetriamine, 3- aminopropylmethyldiethoxysilane, 3- (1 - aminopropoxy)-
3 -3 -dimethyl-
1-propenyl-trimethoxys ilane, 1 -
trimethoxy sily1-2- (m,p- chloromethyl)phenylethane,
trimethoxysilylpropyl-substituted polyethylene-imine, and combinations
thereof.
[0036] To the
extent an adhesion promoter or combination of promotors do not cure
with a desired speed, a separate cure catalyst for the silanol functional
present is provided. Such
cure catalysts illustratively including metal carboxylates, metal oxides,
alkyl metal
carboxylates, alkyl metal alkoxides and metal chelates. Exemplary specific
catalysts include
tetraalkyl titanate, tetraalkyl zirconate, dibutyltindiacetate,
dibutyltindilaurate, dibutyltin
dioctoate, dibutyltin dimalate, dibutyltin diacetate, stannous octoate, tin
octylate, tetrabutyl
titanate, dioctyltindilaurate, tetraisopropyltitanate titanium n-butoxide,
zinc acetate, zinc 2-
ethylhexanoate, and combinations thereof.
[0037] An
inventive composition includes a silicone silane and graphene which is
capable of forming a protective cured coating on a target substrate.
[0038] An
inventive composition in some embodiments also contains a fluorocarbon
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or hydrocarbon propellant when aerosol delivery is desired. In other
embodiments, inventive
compositions are applied by consumers by a simple trigger spray or simply by
sponging or
wiping onto a target substrate.
[0039] In
certain embodiments of the invention, a leveling agent is present in an amount
to impart uniform thickness of the composition to the extent that the
composition is able to
form a smooth finish on a target surface of a substrate. A leveling agent is
chosen that is
compatible with the silicone silanes system in the carrier. Leveling agent
operative herein
illustratively include various classes of surfactants: silicone surfactant,
such as polyether-
modified polysiloxane; anionic, such as linear alkylbenzene sulfontaes,
alcohol sulfates,
alcohol ether sulfates, alchol ethoxylated sulaftes, alpha olefin sulfonates,
alphasulfomethyl
ester; and nonionic, such as alcohol ethoxylates, alkyl phenol ethoxylates. A
leveling agent, if
present, in an inventive composition is present from 0.05 to 15 total weight
percent.
[0040] In
certain embodiments of the invention, various additives enhance a property
of an inventive composition; the property illustratively including storage
stability, film
formation, film durability and cleaning properties. Additives are provided
such as a dye to
modify the color of an inventive composition, glitter particulate, a bitterant
such as a
denatonium benzoate, a light stabilizer, a defoamer, a corrosion inhibitor,
fragrance, a
surfactant, a UV agent, or combinations thereof. Each additive independently
is typically in an
inventive composition in an amount from 0 to 3 total weight percent, while in
other specific
embodiments, each is present from 0.01 to 0.5 total weight percent.
[0041] A
defoaming agent is present in certain inventive embodiments in an amount
present to inhibit surfactant foaminess, if desired, and allow for smooth
formation of a
hydrophobic film produced from an inventive composition. Defoamer agents
operative herein
illustratively include silicone-based defoamers; mineral oil-based defoamers,
and mixtures of
foam destroying polymers and hydrophobic solids such as polyureas, as are
known to the art.
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Specific exemplary silicone-based defoamers illustratively include silica-
filled polydimethyl
siloxane and polyether-modified polysiloxanes.
[0042] An
optional UV stabilizer imparts resistance against UV radiation. Examples
of UV stabilizers are benzotriazoles, benzophenones, triazines, hindered amine
light stabilizers,
2-(benzotriazol-2-y1)-4-(2,4,4trimethylpentan-2-y1) phenol, 3,5-di-t-buty1-4-
hydroxybenzoic
acid, hexadecyl ester and combinations thereof.
[0043] A
preservative is optionally present in an embodiment of the inventive
composition. A preservative prevents microbial degradation and offers long
term stability and
increases the overall stability of the composition. Preservatives operative
herein illustratively
include biphenyl-2-ol (ortho phenylphenol), 4,4-dimethyloxazolidine, 5-bromo-5-
nitro-1,3-
dioxane, 2-bromo-2-nitropropane-1,3-diol, 2,4-dichlorobenzyl alcohol, 5-chloro-
2-(2,4-
dichlorophenoxy)-phenol, 4-chloro-3,5-xylenol, 3,3 '-
bis -(1-hydroxymethy1-2,5-
dioxoimidazolidiny1-4- y1)-1,1 ' -methylenedlurea (imidazolidinyl urea), poly
(1 -hexamethylene
biguanidine hydrochloride), 2-phenoxyethanol, hexamethylenetetramine, benzyl
alcohol, 1,3-
bis -(hydroxymethyl)-5,5-dimethylimidazolidone-2,4-dione, S -
chloro-2-methylis othiazol-
3(2H)-one, 2-methyl-isothiazol-3(2H)-one, benzisothiazolinone, 2-benzy1-4
chlorophenol,
chlorhexidine and its digluconate, diacetate, and dihydrochloride salts, 1-
phenoxy-propan-2-
ol, cetyl pyridinium bromide and chloride, N-(hydroxymethyl-N-dihydroxymethy1-
1,3-dioxo-
2,5-imidazolinidy1-4)-N'-hydroxymethyl urea, sodium
hydroxymethylglycinate,
benzethonium chloride, benzalkonium chloride, bromide and saccharinate, 3-
iodopropynylbutylcarbamate, benzisothiazolinone, triacetin, diazolidinyl urea,
and cis-1-3-
chloroally1-3,5,7-triaza-l-azoniaadamantane chloride, and combinations
thereof. Typically, a
preservative is added in an amount of from about 0.05 to 1 total weight
percent.
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[0044] An
inventive composition is readily stored in glass; metal; or plastic containers
made of plastics such as polyethylenes, polypropylenes, nylons, PVC, or PET;
or aerosol cans;
or soaked wipe substrate; woven and non-woven substrates; or sponges.
[0045] While it
should be appreciated that there is virtually no limit as to the nature of
a substrate to which an inventive composition is applied to as to form a
protective film, with
the proviso that the substrate is not dissolved or otherwise damaged through
exposure to an
inventive composition.
[0046] An
inventive composition optionally includes a halocarbon or hydrocarbon
propellant in instances when an aerosol delivery system of an inventive
composition is desired.
Aerosol propellants operative herein illustratively include difluoroethane,
trifluoroethane;
alkanes such as butane, pentane, isobutane; propane; ethers such as dimethyl
ether and diethyl
ether; nitrogen; carbon dioxide; and combinations thereof. The resultant
formulation inclusive
of a propellant is sealed within a conventional metal aerosol canister and
applied by spray
application as is conventional to the art.
[0047] A
process of application for an inventive composition to a surface includes the
step of applying the composition to a substrate such as vehicle trim, plastic
headlights, or
molding. An inventive composition is readily applied to a substrate by
swabbing, pump spray,
or by application from a spray aerosol can or wipe. Silanols from the
composition are allowed
to cure and form the composite matrix with graphene to form a protective film
layer on the
substrate. The coating producing the shine and hydrophobicity is able to
maintain durability
subsequent to the application for several months under normal vehicle
operating conditions.
The protective film formed protects restores degraded trim and molding
surfaces while also
protecting against mud, dust, dirty rain, water spots, and grime. The film
forming process seals
pores making the surface hydrophobic and having less surface roughness further
contributing
to the shine of the treated surface with such a coating formed from an
inventive composition.
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In some embodiments, the graphene domain size and content are such that the
resulting coating
is transparent to an unaided, normal human eye. The film also forms a bonding
to the surface
resulting in a sacrificial layer that is water and car wash resistant. These
film layers repel dust
and water and makes the surface easier to clean.
[0048] Compositions according to the present inventions are provided in
Table 1.
Table 1. Inventive Composition ¨ (amounts in total weight percent exclusive of
optional
propellant)
Ingredient Typical
Adhesion promoter 1-40
Graphene 0.005-30
Reactive silicone silane 1-80
Catalyst 0-5
Additives each 0-3
Carrier remainder
[0049] An inventive composition is readily provided as a kit in the form of
a bottle,
wipe, sponge, or aerosol canister. The bottle optionally equipped with a pump-
or spray-trigger,
a flip-top or a spout closure. With the provision of an optional wipe remove
excess
composition, along with instructions for doing so, an inventive kit is
operational. The
instructions providing details as how to prepare a substrate, apply the
inventive composition,
removal of excess from the substrate and the time and properties of the film
so applied. The
instructions can also provide details as to how the composition is re-applied
after an applied
film is worn.
[0050] The present invention is further detailed with respect to the
following non-
limiting examples that are provided to further illustrate the preparation of
specific inventive
compositions and certain attributes associated with the resulting films on
substrates.
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EXAMPLE 1
[0051] A
composition of 29.8 total weight percent light weight silicone oil, 50 total
weight percent methoxy-terminated polysilsesquioxanes resin, 0.2 total weight
percent solvent
graphene slurry, and 20 total weight percent adhesion promoter is applied to a
faded trim part
as shown in FIG. 1A. The composition is applied using a sponge and wipe. The
composition
demonstrates no leveling issues. The composition provides high shine to the
trim part per
ASTM D523, as shown in comparison to the untreated portion of the trim part of
FIG. 1B.
Even after five months, the shine of the coating is still visible as shown in
FIG. 1A. Similar
composition was applied as headlight sealant. The aged headlight has hazy
surface as shown
in FIG. 2A. It was wet sanded, and then to which was applied the composition
to provide
optical clarity and protection to the headlights (FIG. 2B). After 5 months,
the treated headlight
shown in FIG. 2B remained clear and protected from weathering (FIG. 2C).
EXAMPLE 2
[0052] The
composition of Example 1 is sealed in a conventional metal aerosol canister
with gaseous nitrogen as a propellant. The canister mixture is applied by
spray application to
the same substrates as Example 1 with excess liquid being removed from the
substrate surface.
The resulting film coated substrates are tested and perform in a similar
manner as to those in
Example 1.
[0053] Patents
and publications mentioned in the specification are indicative of the
levels of those skilled in the art to which the invention pertains. These
patents and publications
are incorporated herein by reference to the same extent as if each individual
patent or
publication was specifically and individually incorporated herein by
reference.
CA 03221567 2023-11-24
WO 2022/256216
PCT/US2022/030998
[0054] The
forgoing description is illustrative of particular embodiments of the
invention, but is not meant to be a limitation upon the practice thereof. The
following claims,
including all equivalents thereof are intended to define the scope of the
invention.
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