CA1176828A - Ultraviolet absorbent silicone based emulsions for vinyl polishes - Google Patents
Ultraviolet absorbent silicone based emulsions for vinyl polishesInfo
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- CA1176828A CA1176828A CA000399400A CA399400A CA1176828A CA 1176828 A CA1176828 A CA 1176828A CA 000399400 A CA000399400 A CA 000399400A CA 399400 A CA399400 A CA 399400A CA 1176828 A CA1176828 A CA 1176828A
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Abstract
ABSTRACT OF THE DISCLOSURE
A silicone oil and water emulsion composition which 18 relatively opaque towards ultraviolet light and which may serve as the basis for silicone vinyl polishes is provided. Blends of silicone oils may be emulified with anionic, cationic or nonionic emulsifiers and can be rendered UV absorbent when combined with certain silicone oil soluble ultraviolet light screening agents such as 2-ethylhexyl-2-cyano-3,3-phenyl acrylate.
A silicone oil and water emulsion composition which 18 relatively opaque towards ultraviolet light and which may serve as the basis for silicone vinyl polishes is provided. Blends of silicone oils may be emulified with anionic, cationic or nonionic emulsifiers and can be rendered UV absorbent when combined with certain silicone oil soluble ultraviolet light screening agents such as 2-ethylhexyl-2-cyano-3,3-phenyl acrylate.
Description
~768:;~B
ULTRAVIOLET ABSORBENT SILICONE BASED
EMULSIONS FOR ~INYL'P'OLISHES
FIELD OF'THE''INVENTION
The present invention is related to ultraviolet light absorbent silicone based emulsions and polishes for vinyl products made therefrom, and processes for making the same. The polish compositions are useful for protecting, cleaning, preserving and polishing vinyl and other surfaces and for imparting gloss to such surfaces.
BACKGROUND OF THE'INVENTION
Silicone based polishes are widely used for automotive interior and exterior vinyl parts as well as household vinyl products, luggage, marine vinyl and many vinyl sporting goods. These polishes are are used to beautify and protect vinyl surfaces, and in fact held to restore and rejuvenate such surfaces.
Silicones are polyorganosiloxane polymeric materials which are utilized in a wide variety of applications which require premium properties not otherwise available from alternative or conventional organic materials.
Silicones offer outstanding durability and weather resistance and offer the ability to withstand wide variations in climatic conditions such as extreme heat and cold. Additionally, polish formulators utilize silicone materials since they contribute to the gloss, . ~
~J
~176~3Z~3 durability and water repellancy of these products.
Numerous silicone materials have been previously used in polish formulations for various applications.
For example, there are instances where polyorganosiloxane fluids and resins have been combined with amine functional silicones or silanes in order to provide detergent resistant silicone polish compositions. These particular silicone polishes are especially useful for automobile bodies since they offer protection to the painted surface while durably withstanding repeated washings.
Similarly, it has been found that certain silicone based polishes can offer the same outstanding properties to the vinyl surfaces present on many modern automobiles, including both the roof and the upholstery.
Polishes comprised essentially of silicone emulsions in combination with various optional ingredients have been previously utilized as vinyl polishes and cleaners.
Some of these formulations have been used with and without ~ax bases. An example of a silicone-based vinyl polish can be found in U.S. Patent No. 3,956,174 to Palcher dated May 11, 1976. In that disclosure a degree of vinyl protection is provided by combining an organopolysiloxane emulsion with one or more polyols such as glycerin. The present invention, on the other hand, does not utilize such polyolsl and in fact offers additional protection from ultraviolet light by utilizing certain effective silicone-oil so ~ubel UV screening agents.
Many of the other heretofore known polish formulations utilized as a principal ingredient dimethyl silicone fluids, i.e., silanol or trimethylsilyl chainstopped polydimethylsiloxane fluids. Such polish products are transparent to ultraviolet light, e.g., sunlight, which is a useful property for polishes since it allows the substrate to shbw through, however, such a property ~L176~32~3 also allows the ultraviolet light to penetrate and possibly degrade the substrate. This is an acute problem in the case of vinyl surfaces underneath the polish film. Ultraviolet light screening ag~nts or absorbers are not unknown products. Heretofore these products have generally been utilized within the very product which is sought to be protected. For example, many plastics such as polyvinylchloride can include as an optional ingredient therein an ultraviolet light absorbing agent which is,hbpefully, effective for protectinsthe PVC substrate. As noted above, the present invention combines certain effective W
absorbing agents with the silicone based emulsion and provides vinyl polishes which are particularly effective for affording additional protection to the vinyl surfaces to which they are applied.
The present invention additionally provides a process wherein it is possible to combine such W
absorbing agents with the silicone based emulsion prior to the formulation of the polish composition thereby enabling the polish formulator to provide UV
protection directly with the silicone material which provides the otherwise beneficial properties of the polish composition.
By incorporating a silicone oil soluble W
absorbing or sunscreen directly into the silicone fluid which is then emulsified, the resulting emulsion can be used to formulate an excellent vinyl polish, thereby providing a significant improvement over prior art systems for preventing the W degradation of vinyl surfaces.
It is therefore an object of the present invention to provide a silicone based water emulsion combined with selected silicone oil soluble ultraviolet light absorbing agents which together are effective as the ~176~Z8 basic for vinyl polishes.
It is another object of the present invention to provide silicone based polishes for vinyl materials which offer superior resistance to ultraviolet light, thereby decreasing degredation of the substrate while maintaining the durability, gloss, and protection expected of such vinyl polishes.
It is a further object of the present invention to provide a process for producing silicone based vinyl polishes offering such superior resistance to ultraviolet degredation.
These and other objects of the present invention will become apparent to those skilled in the art upon consideration of the present specification, examples, and claims.
SUMMARY OF THE INVENTION
The present invention provides ultraviolet light absorbent silicone based emulsions and vinyl polish formulations based thereon. The emulsion is comprised of an aqueous continuous phase and silicone fluid or oil discontinuous phase, thereby forming a so-called coil-in-water emulsion. The oil phase will generally be comprised of a blend of one or more polydimethylsiloxane fluids. The emulsion naturally requires at least one emulsifying agent effective for dispersing the silicone oil phase into the aqueous phase. A number of suitable emulsifying agents are disclosed below as well as several useful combinations of such emulsifiers. A
number of well known emulsification techniques are effective such as, for example, homogenization. The amount of water in the aqueous continuous phase is variable and will be determined by the desired weight percent silicone solids content for the particular emulsion. The essential component for the silicone emulsions of the present invention is the ultraviolet ~17682~3 light screening agent which is effective for blocking substantial amounts of W which would normally be transmitted through an otherwise W-transparent polyorganosiloxane component. A particularly note-worthy feature is that improved vinyl polish formulationsare obtained due to the incorporation of the W screening agent directly into the discontinuous phase where it it intimately contacted with the silicone oil. Indeed the successful emulsions of the present invention are only possible when certain silicone oil soluble W
screening agents are utilized. For purposes of the present disclosure it is intended that so-called effective screening agents shall be those which are soluble in the silicone oil phase of the emulsion and which contribute to the ultraviolet screening ability of the emulsions. It is in this manner that such emulsions can form the basis of useful silicone based vinyl polishes.
The present invention utilizes the above described emulsions to provide ultraviolet light absorbent silicone based vinyl polish compositions comprising ~a) 100 parts by weight of a silicone emulsion having an aqueous continuous phase wherein the emulsion is comprised of (i.~ a blend of one or more polydimethyl-siloxane fluids, ~ at least one emulsifying agenteffective for dispersing such polydimethylsiloxane fluids in the aqueous continuous phase of the emulsion, (iii.~ an amount of water effective for providing a desired emulsion having a silicone solids content of 20 to 90% by weight, and (iv.~ 0.25 to 4 parts by weight of a silicone oil soluble ultraviolet light absorbing agent for each 100 parts by weight of the polydimethylsiloxane fluid or blend of such fluids;
(b~ 0.5 to 5 parts by weight of a surfactant wetting or leveling agent; (c~ O to 5 parts by weight of an optional thickening agent which is effective for suspending colloids of the emulsified silicone material in the vinyl polish product; (d~ an amount of neutralizing agent which is effective for rendering the polish composition neutral; and (e~ 0 to 95 parts by weight of additional water which makes up the remaining portion of the polish composition.
The process for providing the ultraviolet light absorbent silicone based vinyl polishes is comprised of the steps of combining the requisite ingredients such as the silicone emulsion having the aqueous continuous phase along with the silicone oil soluble W light absorbing agent and the surfactant leveling or wetting agent, thickening agents, and neutralizing agents along with the additional water, and then blending the polish formulation until a uniform polish is obtained. It is preferable that the silicone oil soluble UV light absorbing agent be contained in the silicone based emulsion constituent of the polish formulation and such emulsion is provided by a process comprising the steps of blending the polydimethylsiloxane fluid or blend of such fluids, with the W light absorbing agent, an effective amount of emulsifying agents, and sufficient water to provide a silicone emulsion having 25~ the desired silicone solids content of approximately 10 to 90 and preferably 20 to 70 weight percent. This blend is then heated to approximately 35 to 55C with sufficient gentle agitation to maintain uniformity of the composition whereupon an emulsifying step is carried out b ~ n~ of several well known techniques so that the ~olndl~n ~ composition is inverted to a discontinuous silicone oil phase within a continuous aqueous phase.
DESCRIPTION OF THE INVENTION
As noted above, one of the major components of the ~L176~
~ 6OSI-470 silicone based vinyl polish of the present invention is the water based silicone emulsion, i.e. an emulsion having an aqueous continuous phase which is comprised of a blend of one or more polyaimethylsiloxane fluids.
These fluids can be one or more of the silicone compositions represented by the following general formulae.
Formula I.
Me - SiO --SiO Si - Me Me Me x Me Formula I~.
Me Me \ Me 20 l l ~0 - SiO--SiO Si - OEI
~! ~M!l z wherein Me represents methyl radicals and the letters x and z represent positive integers ranging from, approximately 20 to 1500 such that the viscosity of : 30 said fluid ranges from, approximately, 20 to 100,000 centistokes at 25 C. These polydimethylsiloxane : fluids are well known in silicone art and are clear water white liquids exhibiting exceptional resistance to oxidation and weathering and which provide high gloss and ease of application and rub out in polishes as well ~7 ~ ~ Zf~
as being water repeIlant and giving a dry and slick rather than an oily feel to the surface. Suitable polydimethylsiloxane fluids are available from the General Electric Company under the tradenames SF-96R
and VISCASILR. These polydimethylsiloxane fluids are available in a number of standard viscosity grades and they may be blended together to achieve an intermediate viscosity of the same fluids.
Polydimethylsiloxane fluids can be emulsified into a silicone water emulsion by utilizing at least one or preferably a blend of emulsifying agents which are effective for dispersing the polydimethylsiloxane fluid oil as the discontinuous phase of the emulsion in the aqueous continuous phase of the emulsion. Such effective emulsifying agents are well known and can be selected from, for example, both anionic and cationic emulsifying agents as well as nonionic or amphoteric emulsifying agents. Examples of suitable emulsifying agents include but are not limited to the following:
ANIONIC EMULSIFYING A OENTS
ammonium oleate morpholine oleate triethanolamine stearate triethanolamine salts of dodecylbenzene sulfonic acid codium lauryl sulfate sodium salt of alky sulfates (e.g. lauryl, decyl, cetyl, stearyl, etc.) sodium salt of linear or branched alkyl benzene sulfonates sodium and ammonium salts of ethoxylated linear or branched alkyl-aryl sulfates sodium and ammonium salts of ethoxylated alkyl sulfates organic phosphate esters potassium oleate AMPHOTERIC EMULSIFYING AGF.NTS
-monocarboxylate coconut imidazolinium derivative (e.g.
- ~768Z~3 _ g _ Emery 6752) sodium salt of N-coco beta amino pxopionate N-coco beta amino propionic acid disodium salt of N-tallow beta amino dipropionate disodium N-lauryl beta-iminodipropionate trimethylanolamine salt of N-lauryl, myristyl-B-amino propionic acid N-lauryl, myristyl beta amino propionic acid N-cocaminobutyric acid lecithin CATIONIC EMULSI'FYING AGENTS
methylbis (2-hydroxyethyll cocoammonium chloride methylpolyethylene (15~ oleylammonium chloride methylbis (2-hydroxyethyl~ oleylammonium chloride methylpolyethylene (15~ olelyammonium chloride methylbis (2-hydroxyethyl) octadecylammonium chloride methylpolyoxyethylene ~15~ octadecylammonium chloride trimethyldodecylammonium chloride trimethyldodecylammonium chloride trimethylhexadecylammonium chloride trimethylhexadecylammonium chloride trimethyloctadecylammonium chloride trimethylcocoammonium chloride trimethylsoyaammonium chloride trimethyltallowammonium chloride trimethyl (hydrogenated-tallow) ammonium chloride dimethyldicocoammonium chloride dimethyldi (hydrogenated-tallow~ ammonium chloride dimethyldisoyaammonium chloride NONIONIC EMULS'IFYIN'G AGENTS
Ester Types : polysorbate 80 polysorbate 20 sorbitan laurate 1~76~3Z~3 Ether Types:
Alkyl-phenyl-0-(EtO~xH
Alkyl-O-(ETO~ H
Also included are combinations of nonionic and 5 ~ anionic type emulsifiers such as:
Triton X 202 and alkyl - O - (EtO~ H
sodium lauryl sulfate and alkyl-phenyl - O - (EtO~XH
morpholine oleate and alkyl-phenyl - O - (EtO~XH
ammonium oleate and polysorbate 80 Although the order of addition of the various ingredients for the silicone emulsion is not entirely critical and the ingredients may be added in any desired order or concomitantly, it is preferred that the ultraviolet light absorbing agent which is utilized in the vinyl polishes of the present invention be added to the mixture of silicone oil and emulsifying agents and water prior to their emulsification so that it becomes an integral part of the oil phase. The amount of silicone oil soluble W light absorbing agent is not critical so long as it is effective for screening out harmful W radiation in the particular desired application. The amount will ordinarily depend upon the particular emulsion formulation which is utilized in any particulat case and effective amounts can be arrived at by those skilled in the art without undue experimentation. Ordinarily from approximately 0.0025 0.04 parts by weight of such silicone oil soluble ultraviolet light absorbing agents per each part by ` weight of the polydimethylsiloxane fluid oil will be effective in the vinyl polish compositions of the present invention. The p~rticular effect of ultraviolet light absorbing agents will be described in further detail below. The remaining major ingredient of such silicone emulsions is the water which makes up the continuous 11768Z~3 aqueous phase of the emulsion. Again, the amount of water is not critical and will be determined by the particular emulsion which is desired. For example, the amount of water will effect the percent by weight of the silicone solids content of any particular emulsion, e.g. the less water that is utilized, the greater relative concentration of silicone solid material in the emulsion and polish compositions.
Ordinari y for such silicone water emulsions there will be a silicone solids content of approximately 10 60~ by weight of the silicon fluid compared to the weight of the water. The actual emulsification step can take place by any of several well known techniques such as colloid milling as well as homogenization.
As stated above, it is preferably that the W absorbing agent be added to the silicone oil prior to emulsification of the oil. However, other methods of providing these compositions are available. For example, it may be possible although less preferably to add the ultraviolet light absorbing agent to the polish base which will later be blended with the silicone water emulsion to provide the final vinyl polish composition. Another possible alternative, although again less preferable, is to take a standard pre-emulsified silicone water emulsion product such as General Electric SM-2133 or SM-2135 and add the UV light absorbing agent to it. However, it is to be noted that W absorbing agents cannot be added directly to previously prepared emulsions since they will not disperse readily throughout the emulsions.
It would first be necessary to either pre-emulsify the UV light absorbing agent with additional emulsifiers and then combine this emulsion with the silicone and water emulsion, or add emulsifiers to the ultraviolet light absorbing agent which are then dispersed into the silicone water emulsion which is then re-emulsified.
, 1176~2~
It is to be emphasized that these methods are less preferable than the previous described method and in either case it is critical that the screening agent be soluble in the silicone oil phase of the emulsion.
The ultraviolet light absorbent silicone based vinyl polish compositions of the present invention will include 100 parts by weight of the above described silicone-water emulsion containing the chosen silicone oil soluble W light absorbing agent. The polish composition will also contain a number of additional ingredients including the following: 0.5 to 10.0 parts by weight of a wetting or leveling agent. The vinyl polish will be included in ~he composition. Among the suitable wetting or leveling agents will be those selected from the group consisting of alkyl-phenyl - O -(EtO)XH and alkyl - O (EtO~X H surfactants.
The polish composition of the present invention may also include O to 5 parts by weight of an optional thicknening agent which is effective for suspending colloids of the emulsion in the polish composition.
A suitable thickening agent will be those selected from the group consisting of carboxy vinyl polymers and carboxy methyl cellulose, veegum, guar gum, MethocelR
and alginate.
The polish composition may also include an amount of neutralizing agent effective for rendering the polish composition neutral. This neutralizing agent will ordinarily be a strong base such as those selected from the group consisting of triethanol amine, sodium hydroxide (NaOH~, potassium hydroxide (KOH~, and other string bases. Ordinarily O to 5 parts by weight per 100 parts of the silicone emulsion will be a suitable amount of such neutralizing agents.
Of course, those skilled in the art of polish formulations will appreciate that numerous additional ingredients can be utilized in such polish formulations ~L7682~
such as including, biocides, fungicides, etc. For example, Giv-GardR DXN brand of dimethoxane can be utilized to preserve the emulsion product during shipping and will serve to counteract any increase in microbial activity. As is also well known in the art of formulating polishes, numerous other additives are available for providing polishes with varied properties. Vegetable and petroleum waxes are commonly used as are silicone resins and amine functional silicones.
Additionally, glycols and polyglycols are claimed to provide antioxidant propexties to certain polish formulations.
A number of ultraviolet light absorbers are known which are useful for inhibiting photochemical degradation caused by an excess of ultraviolet radiation striking a substrate. These absorbers are generally designed to intercept radiation having wave lengths of approximately 200 to 400 milimicrons. A particular W absorber which has been found to be effective in silicone based vinyl polishes is WINULR N-539 W absorber available from BASF Wyandotte Corporation. UVINUL N-539 is a 2-ethylhexyl-2-cyano-3,3-diphenylacrylate. Particular examples of other W absorbing agents which are believed to be effective in the emulsion and polish composition of the present invention include: UVINUL
N-35, which is composition of the present invention include:
UVINUL N-35, which is an ethyl-2-cyano-3,3-diphenyl acrylate; W INUL DS-49, which is a disodium 2-2'-dihydroxy-4,4'-dimethyoxy-5,5' disulfobenzophenone;
3Q UVINUL MS-40, which is a 2-hydroxy-4-methoxy-benzophenon 5-sulfonic acid; WINUL-400. which is a 2,4-dihydroxy-~enzophenone, homosalate (C.A.S. Registry No. 118-56-9~
and GIV-TAN F which is 2-ethoxyethyldura-methoxycinnamate.
~gain it is to be emphasized that the success of any individual W screening agent is dependent upon its silicone oil solubîlity which therefore allows effective 11~68Z8 dispersion of this active ingredient throughout the emulsion and polish formulations.
A typical W absorbent silicone oil and water emulsion formulation useful in silicone based vinyl polishes could contain the following ¢omponents, where percentages are given as approximate wei~ht percent of the particular component as compared to the total weight of the emulsion:
TRADE NAME CHEMICAL NAMEWEIGHT
Viscasil -60,000 dimethyl polysiloxane 19.4 SF96 -100 dimethyl polysiloxane 16.4 SF96R-100 dimethyl polysiloxane 14.2 POE (2~) Sorbitan Monooleate 2.47 Sorbitan monolaurate .56 POE Alkyl aryl ether emulsifier blend 1.66 TRITON X 202 (anionic emulsifier~ .39 ~i~ Gard DXN 6-acetoxy-2,4-dimethyl-m-dioxane .05 Sodium Benzoate Sodium Benzoate.10 AF-72 (antifoam~ .005 Water H2O (sterile)43.765 Uvinul N-539 3-ethyl hexy-2-cyano-3,3-diphenyl acrylate 1.0 In order that those skilled in the art may best practice the teachings of the present invention, the following examples are given by way of illustration-and not by way of limitation.
Preferred Embodiments Example 1 A silicone-water emulsion was first prepared in the following manner: to a 3 liter stainless steel beaker equipped with stirrer, hotplate and thermometer there was charged 388 grams of Yiscasil (60,000~, and 328 grams of SF-96 (lOQ) 284 grams of SF-96 (1,00Q~ and 10 grams W INUL N-539 ultraviolet light absorbing agent. The Viscasil and SF~26 fluids were trimethylsylil ~176828 chainstopped polydimethylsiloxane ~luids available from the General Electric Company, and having viscosities of 60,000, 100 and 1,00 centistokes respectively at 25 C. This charge was blended for half hour whereupon 49.4 grams of polysorbate-80, 11. 2 grams of sorbitan laurate and 33. 2 grams of a mixture of surfactants was added. This mixture of surfact ~ ts consisted of 42.5 weight percent of Igepal, C0850 which is nonylphenoxypoly-(ethyleneoxy) ethanol, 42.5 weight pelcent Tergitol TMN which is alkyl-O-(EtO~xH2, and 15% water. Additionally, there was added 7.8 grams of Triton X 202. This blend was then heated to approximately 50`C and agitated at that temperature for approximately a half hour. Next 80.8 grams of 15 deionized water was slowly added to the vessel for an approximate one hour period. During this addition, the agitation of the premix was moderate to slow.
Simultaneously while the premix was being blended, a second vessel (a so-called blend vessel) was 20 charged with 41.22 parts of sterile water, 0.05 parts Giv-Gard DXN, and 0.1 part sodium benzoate. When the premix was uniform it was inverted to emulsion form by passing it through a Manton-Gaulin colloid mill having a 12 mill gap at 25 psig N2 pressure, thereby 25 providing a-paste-like emulsion. Next, 58.63 parts of this paste was dispersed in the blend vessel containing the biocide solution. The emulsion was found to have a silicone solids content of 54.9 percent by weight, a viscosity of 70 centipoise, and a pH of 6.5.
Example 2 A second silicone-water emulsion was made in accordance with the procedure as in Example 1, with the sole exception that the ultraviolet light absorbing agent (UVINUL N-5391 was increased to 20 grams or approximately 1% of the total emulsion. This .r ~
~76828 emulsion was found to have the following physical properties:
Silicone solids content: 54.8% by weight Viscosity: 115 centipoise pH: 6.6 Example 3 A third silicone-water emulsion was prepared in accordance with the procedure set forth in Example l with the sole exception that no ultraviolet light absorbing agent was included in the emulsion. The emulsion was found to have the following physical properties:
Silicone solids content: 54.9% by weight Viscosity: 70 centipoise pH: 6.5 EXample 4 Several vinyl polish formulations were prepared utilizing each of the previously made silicone-water emulsions as described in Examples 1, 2 and 3. Each Of the vinyl polishes contained 35.0 parts by weight of the silicone-water emulsion prepared in the above examples, 1.0 parts by weight Triton X100, 0.2 parts by weight Carbopole 934, 0.2 parts by weight triethanol amine, and 63.6 parts bv weight of additional water.
Each of the silicone based vinyl polish formulations was subjected to an accelerated aging study. Pieces of black exterior vinyl of the type used on the roof of automobiles was bonded with room temperature vulcanizable silicone runner to 4 inch by 6 inch steel panels. The polishes made from each of the emulsions prepared in Examples l, 2 and 3 was then applied to the vinyl surfaces. Two applications of each polish were used in order to insure uniformity of polish film. The polish was applied by spray~ng the vinyl surface with a portion of the polish, spreading it with a cloth 1~768Z~3 applicator to break the emulsion, and buffing it dry.
The three polished test panels plus an unpolished control panel were then placed in a Carbon Arc Weather-o-meter for a 33Z hour period. Afterwards a portion of the polished f~lm on each test panel was removed with mineral spirits and a detergent water mixture and then compared to a piece of the vinyl that had not been aged. Table l indicates the results of these tests.
- Tab'l'e l Polish Sample Gloss Appearance of Vinyl Example l Very good ~ery good Example 2 Very good Very good Example 3 Fair Fair 15 Control(unpolished~ Poor Poor Thus it can be seen the process of the present ; invention provides silicone based polishes for vinyl surfaces which not only act as good polishes but also serve to protect the surface from the detrimental effects of aging through exposure to ultraviolet radiation.
ULTRAVIOLET ABSORBENT SILICONE BASED
EMULSIONS FOR ~INYL'P'OLISHES
FIELD OF'THE''INVENTION
The present invention is related to ultraviolet light absorbent silicone based emulsions and polishes for vinyl products made therefrom, and processes for making the same. The polish compositions are useful for protecting, cleaning, preserving and polishing vinyl and other surfaces and for imparting gloss to such surfaces.
BACKGROUND OF THE'INVENTION
Silicone based polishes are widely used for automotive interior and exterior vinyl parts as well as household vinyl products, luggage, marine vinyl and many vinyl sporting goods. These polishes are are used to beautify and protect vinyl surfaces, and in fact held to restore and rejuvenate such surfaces.
Silicones are polyorganosiloxane polymeric materials which are utilized in a wide variety of applications which require premium properties not otherwise available from alternative or conventional organic materials.
Silicones offer outstanding durability and weather resistance and offer the ability to withstand wide variations in climatic conditions such as extreme heat and cold. Additionally, polish formulators utilize silicone materials since they contribute to the gloss, . ~
~J
~176~3Z~3 durability and water repellancy of these products.
Numerous silicone materials have been previously used in polish formulations for various applications.
For example, there are instances where polyorganosiloxane fluids and resins have been combined with amine functional silicones or silanes in order to provide detergent resistant silicone polish compositions. These particular silicone polishes are especially useful for automobile bodies since they offer protection to the painted surface while durably withstanding repeated washings.
Similarly, it has been found that certain silicone based polishes can offer the same outstanding properties to the vinyl surfaces present on many modern automobiles, including both the roof and the upholstery.
Polishes comprised essentially of silicone emulsions in combination with various optional ingredients have been previously utilized as vinyl polishes and cleaners.
Some of these formulations have been used with and without ~ax bases. An example of a silicone-based vinyl polish can be found in U.S. Patent No. 3,956,174 to Palcher dated May 11, 1976. In that disclosure a degree of vinyl protection is provided by combining an organopolysiloxane emulsion with one or more polyols such as glycerin. The present invention, on the other hand, does not utilize such polyolsl and in fact offers additional protection from ultraviolet light by utilizing certain effective silicone-oil so ~ubel UV screening agents.
Many of the other heretofore known polish formulations utilized as a principal ingredient dimethyl silicone fluids, i.e., silanol or trimethylsilyl chainstopped polydimethylsiloxane fluids. Such polish products are transparent to ultraviolet light, e.g., sunlight, which is a useful property for polishes since it allows the substrate to shbw through, however, such a property ~L176~32~3 also allows the ultraviolet light to penetrate and possibly degrade the substrate. This is an acute problem in the case of vinyl surfaces underneath the polish film. Ultraviolet light screening ag~nts or absorbers are not unknown products. Heretofore these products have generally been utilized within the very product which is sought to be protected. For example, many plastics such as polyvinylchloride can include as an optional ingredient therein an ultraviolet light absorbing agent which is,hbpefully, effective for protectinsthe PVC substrate. As noted above, the present invention combines certain effective W
absorbing agents with the silicone based emulsion and provides vinyl polishes which are particularly effective for affording additional protection to the vinyl surfaces to which they are applied.
The present invention additionally provides a process wherein it is possible to combine such W
absorbing agents with the silicone based emulsion prior to the formulation of the polish composition thereby enabling the polish formulator to provide UV
protection directly with the silicone material which provides the otherwise beneficial properties of the polish composition.
By incorporating a silicone oil soluble W
absorbing or sunscreen directly into the silicone fluid which is then emulsified, the resulting emulsion can be used to formulate an excellent vinyl polish, thereby providing a significant improvement over prior art systems for preventing the W degradation of vinyl surfaces.
It is therefore an object of the present invention to provide a silicone based water emulsion combined with selected silicone oil soluble ultraviolet light absorbing agents which together are effective as the ~176~Z8 basic for vinyl polishes.
It is another object of the present invention to provide silicone based polishes for vinyl materials which offer superior resistance to ultraviolet light, thereby decreasing degredation of the substrate while maintaining the durability, gloss, and protection expected of such vinyl polishes.
It is a further object of the present invention to provide a process for producing silicone based vinyl polishes offering such superior resistance to ultraviolet degredation.
These and other objects of the present invention will become apparent to those skilled in the art upon consideration of the present specification, examples, and claims.
SUMMARY OF THE INVENTION
The present invention provides ultraviolet light absorbent silicone based emulsions and vinyl polish formulations based thereon. The emulsion is comprised of an aqueous continuous phase and silicone fluid or oil discontinuous phase, thereby forming a so-called coil-in-water emulsion. The oil phase will generally be comprised of a blend of one or more polydimethylsiloxane fluids. The emulsion naturally requires at least one emulsifying agent effective for dispersing the silicone oil phase into the aqueous phase. A number of suitable emulsifying agents are disclosed below as well as several useful combinations of such emulsifiers. A
number of well known emulsification techniques are effective such as, for example, homogenization. The amount of water in the aqueous continuous phase is variable and will be determined by the desired weight percent silicone solids content for the particular emulsion. The essential component for the silicone emulsions of the present invention is the ultraviolet ~17682~3 light screening agent which is effective for blocking substantial amounts of W which would normally be transmitted through an otherwise W-transparent polyorganosiloxane component. A particularly note-worthy feature is that improved vinyl polish formulationsare obtained due to the incorporation of the W screening agent directly into the discontinuous phase where it it intimately contacted with the silicone oil. Indeed the successful emulsions of the present invention are only possible when certain silicone oil soluble W
screening agents are utilized. For purposes of the present disclosure it is intended that so-called effective screening agents shall be those which are soluble in the silicone oil phase of the emulsion and which contribute to the ultraviolet screening ability of the emulsions. It is in this manner that such emulsions can form the basis of useful silicone based vinyl polishes.
The present invention utilizes the above described emulsions to provide ultraviolet light absorbent silicone based vinyl polish compositions comprising ~a) 100 parts by weight of a silicone emulsion having an aqueous continuous phase wherein the emulsion is comprised of (i.~ a blend of one or more polydimethyl-siloxane fluids, ~ at least one emulsifying agenteffective for dispersing such polydimethylsiloxane fluids in the aqueous continuous phase of the emulsion, (iii.~ an amount of water effective for providing a desired emulsion having a silicone solids content of 20 to 90% by weight, and (iv.~ 0.25 to 4 parts by weight of a silicone oil soluble ultraviolet light absorbing agent for each 100 parts by weight of the polydimethylsiloxane fluid or blend of such fluids;
(b~ 0.5 to 5 parts by weight of a surfactant wetting or leveling agent; (c~ O to 5 parts by weight of an optional thickening agent which is effective for suspending colloids of the emulsified silicone material in the vinyl polish product; (d~ an amount of neutralizing agent which is effective for rendering the polish composition neutral; and (e~ 0 to 95 parts by weight of additional water which makes up the remaining portion of the polish composition.
The process for providing the ultraviolet light absorbent silicone based vinyl polishes is comprised of the steps of combining the requisite ingredients such as the silicone emulsion having the aqueous continuous phase along with the silicone oil soluble W light absorbing agent and the surfactant leveling or wetting agent, thickening agents, and neutralizing agents along with the additional water, and then blending the polish formulation until a uniform polish is obtained. It is preferable that the silicone oil soluble UV light absorbing agent be contained in the silicone based emulsion constituent of the polish formulation and such emulsion is provided by a process comprising the steps of blending the polydimethylsiloxane fluid or blend of such fluids, with the W light absorbing agent, an effective amount of emulsifying agents, and sufficient water to provide a silicone emulsion having 25~ the desired silicone solids content of approximately 10 to 90 and preferably 20 to 70 weight percent. This blend is then heated to approximately 35 to 55C with sufficient gentle agitation to maintain uniformity of the composition whereupon an emulsifying step is carried out b ~ n~ of several well known techniques so that the ~olndl~n ~ composition is inverted to a discontinuous silicone oil phase within a continuous aqueous phase.
DESCRIPTION OF THE INVENTION
As noted above, one of the major components of the ~L176~
~ 6OSI-470 silicone based vinyl polish of the present invention is the water based silicone emulsion, i.e. an emulsion having an aqueous continuous phase which is comprised of a blend of one or more polyaimethylsiloxane fluids.
These fluids can be one or more of the silicone compositions represented by the following general formulae.
Formula I.
Me - SiO --SiO Si - Me Me Me x Me Formula I~.
Me Me \ Me 20 l l ~0 - SiO--SiO Si - OEI
~! ~M!l z wherein Me represents methyl radicals and the letters x and z represent positive integers ranging from, approximately 20 to 1500 such that the viscosity of : 30 said fluid ranges from, approximately, 20 to 100,000 centistokes at 25 C. These polydimethylsiloxane : fluids are well known in silicone art and are clear water white liquids exhibiting exceptional resistance to oxidation and weathering and which provide high gloss and ease of application and rub out in polishes as well ~7 ~ ~ Zf~
as being water repeIlant and giving a dry and slick rather than an oily feel to the surface. Suitable polydimethylsiloxane fluids are available from the General Electric Company under the tradenames SF-96R
and VISCASILR. These polydimethylsiloxane fluids are available in a number of standard viscosity grades and they may be blended together to achieve an intermediate viscosity of the same fluids.
Polydimethylsiloxane fluids can be emulsified into a silicone water emulsion by utilizing at least one or preferably a blend of emulsifying agents which are effective for dispersing the polydimethylsiloxane fluid oil as the discontinuous phase of the emulsion in the aqueous continuous phase of the emulsion. Such effective emulsifying agents are well known and can be selected from, for example, both anionic and cationic emulsifying agents as well as nonionic or amphoteric emulsifying agents. Examples of suitable emulsifying agents include but are not limited to the following:
ANIONIC EMULSIFYING A OENTS
ammonium oleate morpholine oleate triethanolamine stearate triethanolamine salts of dodecylbenzene sulfonic acid codium lauryl sulfate sodium salt of alky sulfates (e.g. lauryl, decyl, cetyl, stearyl, etc.) sodium salt of linear or branched alkyl benzene sulfonates sodium and ammonium salts of ethoxylated linear or branched alkyl-aryl sulfates sodium and ammonium salts of ethoxylated alkyl sulfates organic phosphate esters potassium oleate AMPHOTERIC EMULSIFYING AGF.NTS
-monocarboxylate coconut imidazolinium derivative (e.g.
- ~768Z~3 _ g _ Emery 6752) sodium salt of N-coco beta amino pxopionate N-coco beta amino propionic acid disodium salt of N-tallow beta amino dipropionate disodium N-lauryl beta-iminodipropionate trimethylanolamine salt of N-lauryl, myristyl-B-amino propionic acid N-lauryl, myristyl beta amino propionic acid N-cocaminobutyric acid lecithin CATIONIC EMULSI'FYING AGENTS
methylbis (2-hydroxyethyll cocoammonium chloride methylpolyethylene (15~ oleylammonium chloride methylbis (2-hydroxyethyl~ oleylammonium chloride methylpolyethylene (15~ olelyammonium chloride methylbis (2-hydroxyethyl) octadecylammonium chloride methylpolyoxyethylene ~15~ octadecylammonium chloride trimethyldodecylammonium chloride trimethyldodecylammonium chloride trimethylhexadecylammonium chloride trimethylhexadecylammonium chloride trimethyloctadecylammonium chloride trimethylcocoammonium chloride trimethylsoyaammonium chloride trimethyltallowammonium chloride trimethyl (hydrogenated-tallow) ammonium chloride dimethyldicocoammonium chloride dimethyldi (hydrogenated-tallow~ ammonium chloride dimethyldisoyaammonium chloride NONIONIC EMULS'IFYIN'G AGENTS
Ester Types : polysorbate 80 polysorbate 20 sorbitan laurate 1~76~3Z~3 Ether Types:
Alkyl-phenyl-0-(EtO~xH
Alkyl-O-(ETO~ H
Also included are combinations of nonionic and 5 ~ anionic type emulsifiers such as:
Triton X 202 and alkyl - O - (EtO~ H
sodium lauryl sulfate and alkyl-phenyl - O - (EtO~XH
morpholine oleate and alkyl-phenyl - O - (EtO~XH
ammonium oleate and polysorbate 80 Although the order of addition of the various ingredients for the silicone emulsion is not entirely critical and the ingredients may be added in any desired order or concomitantly, it is preferred that the ultraviolet light absorbing agent which is utilized in the vinyl polishes of the present invention be added to the mixture of silicone oil and emulsifying agents and water prior to their emulsification so that it becomes an integral part of the oil phase. The amount of silicone oil soluble W light absorbing agent is not critical so long as it is effective for screening out harmful W radiation in the particular desired application. The amount will ordinarily depend upon the particular emulsion formulation which is utilized in any particulat case and effective amounts can be arrived at by those skilled in the art without undue experimentation. Ordinarily from approximately 0.0025 0.04 parts by weight of such silicone oil soluble ultraviolet light absorbing agents per each part by ` weight of the polydimethylsiloxane fluid oil will be effective in the vinyl polish compositions of the present invention. The p~rticular effect of ultraviolet light absorbing agents will be described in further detail below. The remaining major ingredient of such silicone emulsions is the water which makes up the continuous 11768Z~3 aqueous phase of the emulsion. Again, the amount of water is not critical and will be determined by the particular emulsion which is desired. For example, the amount of water will effect the percent by weight of the silicone solids content of any particular emulsion, e.g. the less water that is utilized, the greater relative concentration of silicone solid material in the emulsion and polish compositions.
Ordinari y for such silicone water emulsions there will be a silicone solids content of approximately 10 60~ by weight of the silicon fluid compared to the weight of the water. The actual emulsification step can take place by any of several well known techniques such as colloid milling as well as homogenization.
As stated above, it is preferably that the W absorbing agent be added to the silicone oil prior to emulsification of the oil. However, other methods of providing these compositions are available. For example, it may be possible although less preferably to add the ultraviolet light absorbing agent to the polish base which will later be blended with the silicone water emulsion to provide the final vinyl polish composition. Another possible alternative, although again less preferable, is to take a standard pre-emulsified silicone water emulsion product such as General Electric SM-2133 or SM-2135 and add the UV light absorbing agent to it. However, it is to be noted that W absorbing agents cannot be added directly to previously prepared emulsions since they will not disperse readily throughout the emulsions.
It would first be necessary to either pre-emulsify the UV light absorbing agent with additional emulsifiers and then combine this emulsion with the silicone and water emulsion, or add emulsifiers to the ultraviolet light absorbing agent which are then dispersed into the silicone water emulsion which is then re-emulsified.
, 1176~2~
It is to be emphasized that these methods are less preferable than the previous described method and in either case it is critical that the screening agent be soluble in the silicone oil phase of the emulsion.
The ultraviolet light absorbent silicone based vinyl polish compositions of the present invention will include 100 parts by weight of the above described silicone-water emulsion containing the chosen silicone oil soluble W light absorbing agent. The polish composition will also contain a number of additional ingredients including the following: 0.5 to 10.0 parts by weight of a wetting or leveling agent. The vinyl polish will be included in ~he composition. Among the suitable wetting or leveling agents will be those selected from the group consisting of alkyl-phenyl - O -(EtO)XH and alkyl - O (EtO~X H surfactants.
The polish composition of the present invention may also include O to 5 parts by weight of an optional thicknening agent which is effective for suspending colloids of the emulsion in the polish composition.
A suitable thickening agent will be those selected from the group consisting of carboxy vinyl polymers and carboxy methyl cellulose, veegum, guar gum, MethocelR
and alginate.
The polish composition may also include an amount of neutralizing agent effective for rendering the polish composition neutral. This neutralizing agent will ordinarily be a strong base such as those selected from the group consisting of triethanol amine, sodium hydroxide (NaOH~, potassium hydroxide (KOH~, and other string bases. Ordinarily O to 5 parts by weight per 100 parts of the silicone emulsion will be a suitable amount of such neutralizing agents.
Of course, those skilled in the art of polish formulations will appreciate that numerous additional ingredients can be utilized in such polish formulations ~L7682~
such as including, biocides, fungicides, etc. For example, Giv-GardR DXN brand of dimethoxane can be utilized to preserve the emulsion product during shipping and will serve to counteract any increase in microbial activity. As is also well known in the art of formulating polishes, numerous other additives are available for providing polishes with varied properties. Vegetable and petroleum waxes are commonly used as are silicone resins and amine functional silicones.
Additionally, glycols and polyglycols are claimed to provide antioxidant propexties to certain polish formulations.
A number of ultraviolet light absorbers are known which are useful for inhibiting photochemical degradation caused by an excess of ultraviolet radiation striking a substrate. These absorbers are generally designed to intercept radiation having wave lengths of approximately 200 to 400 milimicrons. A particular W absorber which has been found to be effective in silicone based vinyl polishes is WINULR N-539 W absorber available from BASF Wyandotte Corporation. UVINUL N-539 is a 2-ethylhexyl-2-cyano-3,3-diphenylacrylate. Particular examples of other W absorbing agents which are believed to be effective in the emulsion and polish composition of the present invention include: UVINUL
N-35, which is composition of the present invention include:
UVINUL N-35, which is an ethyl-2-cyano-3,3-diphenyl acrylate; W INUL DS-49, which is a disodium 2-2'-dihydroxy-4,4'-dimethyoxy-5,5' disulfobenzophenone;
3Q UVINUL MS-40, which is a 2-hydroxy-4-methoxy-benzophenon 5-sulfonic acid; WINUL-400. which is a 2,4-dihydroxy-~enzophenone, homosalate (C.A.S. Registry No. 118-56-9~
and GIV-TAN F which is 2-ethoxyethyldura-methoxycinnamate.
~gain it is to be emphasized that the success of any individual W screening agent is dependent upon its silicone oil solubîlity which therefore allows effective 11~68Z8 dispersion of this active ingredient throughout the emulsion and polish formulations.
A typical W absorbent silicone oil and water emulsion formulation useful in silicone based vinyl polishes could contain the following ¢omponents, where percentages are given as approximate wei~ht percent of the particular component as compared to the total weight of the emulsion:
TRADE NAME CHEMICAL NAMEWEIGHT
Viscasil -60,000 dimethyl polysiloxane 19.4 SF96 -100 dimethyl polysiloxane 16.4 SF96R-100 dimethyl polysiloxane 14.2 POE (2~) Sorbitan Monooleate 2.47 Sorbitan monolaurate .56 POE Alkyl aryl ether emulsifier blend 1.66 TRITON X 202 (anionic emulsifier~ .39 ~i~ Gard DXN 6-acetoxy-2,4-dimethyl-m-dioxane .05 Sodium Benzoate Sodium Benzoate.10 AF-72 (antifoam~ .005 Water H2O (sterile)43.765 Uvinul N-539 3-ethyl hexy-2-cyano-3,3-diphenyl acrylate 1.0 In order that those skilled in the art may best practice the teachings of the present invention, the following examples are given by way of illustration-and not by way of limitation.
Preferred Embodiments Example 1 A silicone-water emulsion was first prepared in the following manner: to a 3 liter stainless steel beaker equipped with stirrer, hotplate and thermometer there was charged 388 grams of Yiscasil (60,000~, and 328 grams of SF-96 (lOQ) 284 grams of SF-96 (1,00Q~ and 10 grams W INUL N-539 ultraviolet light absorbing agent. The Viscasil and SF~26 fluids were trimethylsylil ~176828 chainstopped polydimethylsiloxane ~luids available from the General Electric Company, and having viscosities of 60,000, 100 and 1,00 centistokes respectively at 25 C. This charge was blended for half hour whereupon 49.4 grams of polysorbate-80, 11. 2 grams of sorbitan laurate and 33. 2 grams of a mixture of surfactants was added. This mixture of surfact ~ ts consisted of 42.5 weight percent of Igepal, C0850 which is nonylphenoxypoly-(ethyleneoxy) ethanol, 42.5 weight pelcent Tergitol TMN which is alkyl-O-(EtO~xH2, and 15% water. Additionally, there was added 7.8 grams of Triton X 202. This blend was then heated to approximately 50`C and agitated at that temperature for approximately a half hour. Next 80.8 grams of 15 deionized water was slowly added to the vessel for an approximate one hour period. During this addition, the agitation of the premix was moderate to slow.
Simultaneously while the premix was being blended, a second vessel (a so-called blend vessel) was 20 charged with 41.22 parts of sterile water, 0.05 parts Giv-Gard DXN, and 0.1 part sodium benzoate. When the premix was uniform it was inverted to emulsion form by passing it through a Manton-Gaulin colloid mill having a 12 mill gap at 25 psig N2 pressure, thereby 25 providing a-paste-like emulsion. Next, 58.63 parts of this paste was dispersed in the blend vessel containing the biocide solution. The emulsion was found to have a silicone solids content of 54.9 percent by weight, a viscosity of 70 centipoise, and a pH of 6.5.
Example 2 A second silicone-water emulsion was made in accordance with the procedure as in Example 1, with the sole exception that the ultraviolet light absorbing agent (UVINUL N-5391 was increased to 20 grams or approximately 1% of the total emulsion. This .r ~
~76828 emulsion was found to have the following physical properties:
Silicone solids content: 54.8% by weight Viscosity: 115 centipoise pH: 6.6 Example 3 A third silicone-water emulsion was prepared in accordance with the procedure set forth in Example l with the sole exception that no ultraviolet light absorbing agent was included in the emulsion. The emulsion was found to have the following physical properties:
Silicone solids content: 54.9% by weight Viscosity: 70 centipoise pH: 6.5 EXample 4 Several vinyl polish formulations were prepared utilizing each of the previously made silicone-water emulsions as described in Examples 1, 2 and 3. Each Of the vinyl polishes contained 35.0 parts by weight of the silicone-water emulsion prepared in the above examples, 1.0 parts by weight Triton X100, 0.2 parts by weight Carbopole 934, 0.2 parts by weight triethanol amine, and 63.6 parts bv weight of additional water.
Each of the silicone based vinyl polish formulations was subjected to an accelerated aging study. Pieces of black exterior vinyl of the type used on the roof of automobiles was bonded with room temperature vulcanizable silicone runner to 4 inch by 6 inch steel panels. The polishes made from each of the emulsions prepared in Examples l, 2 and 3 was then applied to the vinyl surfaces. Two applications of each polish were used in order to insure uniformity of polish film. The polish was applied by spray~ng the vinyl surface with a portion of the polish, spreading it with a cloth 1~768Z~3 applicator to break the emulsion, and buffing it dry.
The three polished test panels plus an unpolished control panel were then placed in a Carbon Arc Weather-o-meter for a 33Z hour period. Afterwards a portion of the polished f~lm on each test panel was removed with mineral spirits and a detergent water mixture and then compared to a piece of the vinyl that had not been aged. Table l indicates the results of these tests.
- Tab'l'e l Polish Sample Gloss Appearance of Vinyl Example l Very good ~ery good Example 2 Very good Very good Example 3 Fair Fair 15 Control(unpolished~ Poor Poor Thus it can be seen the process of the present ; invention provides silicone based polishes for vinyl surfaces which not only act as good polishes but also serve to protect the surface from the detrimental effects of aging through exposure to ultraviolet radiation.
Claims (26)
1. An ultraviolet light absorbent silicone oil and water emulsion comprising:
(i) a polydimethylsiloxane oil or a blend of two or more polydimethylsiloxane oils to form an oil discontinuous phase of said emulsion;
(ii) sufficient water to form an aqueous continuous phase of said emulsion and provide said emulsion with a silicone solids content of, approximately, 10 to 90 percent by weight;
(iii) an amount of at least one emulsifying agent effective for dispersing said polydimethylsiloxane oil discontinuous phase in said aqueous continuous phase; and (iv) 0.0025 to 0.04 parts of a silicone oil soluble ultraviolet light absorbing agent for each part by weight of said polydimethylsiloxane oil discontinuous phase, said ultraviolet light absorbing agent being incorporated into the polydimethylsiloxane oil discontinuous phase of said emulsion.
(i) a polydimethylsiloxane oil or a blend of two or more polydimethylsiloxane oils to form an oil discontinuous phase of said emulsion;
(ii) sufficient water to form an aqueous continuous phase of said emulsion and provide said emulsion with a silicone solids content of, approximately, 10 to 90 percent by weight;
(iii) an amount of at least one emulsifying agent effective for dispersing said polydimethylsiloxane oil discontinuous phase in said aqueous continuous phase; and (iv) 0.0025 to 0.04 parts of a silicone oil soluble ultraviolet light absorbing agent for each part by weight of said polydimethylsiloxane oil discontinuous phase, said ultraviolet light absorbing agent being incorporated into the polydimethylsiloxane oil discontinuous phase of said emulsion.
2. An emulsion as in claim 1 wherein said silicone oil soluble ultraviolet light absorbing agent is 2-ethylhexyl-2-cyano-3,3-phenyl acrylate.
3. An ultraviolet light absorbent silicone based vinyl polish composition comprising:
(a) 100 parts by weight of a silicone oil and water emulsion wherein said emulsion is comprised of (i) a polydimethyl-siloxane oil or a blend of two or more polydimethylsiloxane oils to form an oil discontinuous phase of said emulsion; (ii) an amount of at least one emulsifying agent effective for dispersing said polydimethylsiloxane oil discontinuous phase in an aqueous continuous phase; (iii) an amount of water effective for providing said aqueous continuous phase of said emulsion and providing an emulsion having a silicone solids content of approximately, 20 to 90 percent by weight, and (iv) 0.0025 to 0.04 parts of a silicone oil soluble ultraviolet light absorbing agent for each part by weight of said polydimethylsiloxane oil discontinuous phase, said ultraviolet light absorbing agent being incorporated into the polydimethylsiloxane oil discontinuous phase of said emulsion;
3. An ultraviolet light absorbent silicone based vinyl polish composition comprising:
(a) 100 parts by weight of a silicone oil and water emulsion wherein said emulsion is comprised of (i) a polydimethyl-siloxane oil or a blend of two or more polydimethylsiloxane oils to form an oil discontinuous phase of said emulsion; (ii) an amount of at least one emulsifying agent effective for dispersing said polydimethylsiloxane oil discontinuous phase in an aqueous continuous phase; (iii) an amount of water effective for providing said aqueous continuous phase of said emulsion and providing an emulsion having a silicone solids content of approximately, 20 to 90 percent by weight, and (iv) 0.0025 to 0.04 parts of a silicone oil soluble ultraviolet light absorbing agent for each part by weight of said polydimethylsiloxane oil discontinuous phase, said ultraviolet light absorbing agent being incorporated into the polydimethylsiloxane oil discontinuous phase of said emulsion;
Claim 3 Cont'd (b) 0.5 to 5 parts by weight of a surfactant leveling agent;
(c) 0 to 5 parts by weight of a thickening agent effective for suspending colloids of said emulsion;
(d) an amount of neutralizing agent effective for rendering said polish composition neutral;
and (e) 0 to 95 parts by weight additional water.
(c) 0 to 5 parts by weight of a thickening agent effective for suspending colloids of said emulsion;
(d) an amount of neutralizing agent effective for rendering said polish composition neutral;
and (e) 0 to 95 parts by weight additional water.
4. A polish as in Claim 3 wherein said emulsifying agent is an anionic emulsifying agent.
5. A polish as in Claim 3 wherein said emulsifying agent is a nonionic emulsifying agent.
6. A polish as in Claim 3 wherein said ultraviolet light absorbing agent is 2-ethylhexyl-2-cyano-3,3-phenyl acrylate.
7. A polish as in Claim 3 wherein said surfactant leveling agent is selected from the group consisting of alkyl-phenyl-O-(EtO)x H and alkyl-O-(EtO)xH.
8. A polish as in Claim 3 wherein said thickening agent is selected from the group consiting of carboxy vinyl polymers, carboxy methyl cellulose, and guar gum.
9. A polish as in Claim 3 wherein said polydimethyl-siloxane oils are selected from those having the general formula:
and wherein Me represents methyl radicals and x and z are each positive integers ranging from, approximately, 20 to 1500 such that the viscosity of said fluid ranges from, approximately, 20 to 100,000 centistrokes at 25°C.
and wherein Me represents methyl radicals and x and z are each positive integers ranging from, approximately, 20 to 1500 such that the viscosity of said fluid ranges from, approximately, 20 to 100,000 centistrokes at 25°C.
10. A polish as in Claim 4 or 5 wherein said emulsifying agent is present in an amount of, appromimately 0.01 to 0.3 parts for each part by weight of polydimethylsiloxane oil to be emulsified.
11. A polish as in Claim 3 wherein said neutraliz-ing agent is, approximately, 0 to 5 parts per 100 parts silicone emulsion of a neutralizing agent selected from triethanol amine, NaOH, and KOH.
12. A process for providing an ultraviolet light absorbent silicone based vinyl polish comprising the steps of:
I. combining (a) 100 parts by weight of a silicone emulsion having an aqueous continuous phase wherein said emulsion contains 0.25 to 4.0 parts by weight of a silicone oil soluble ultraviolet light absorbing agent for each part polydimethylsilocane oil contained in said emulsion; (b) 0.5 to 5.0 parts by weight of a surfactant leveling agent; (c) O to 5 parts by weight of a thickening agent effective for suspending colloids of said emulsion; (d) an amount of neutralizing agent effective for rendering said polish composition neutral; and (e) 0 to 95 parts by weight additional water; and II. blending until a uniform polish composition is obtained.
I. combining (a) 100 parts by weight of a silicone emulsion having an aqueous continuous phase wherein said emulsion contains 0.25 to 4.0 parts by weight of a silicone oil soluble ultraviolet light absorbing agent for each part polydimethylsilocane oil contained in said emulsion; (b) 0.5 to 5.0 parts by weight of a surfactant leveling agent; (c) O to 5 parts by weight of a thickening agent effective for suspending colloids of said emulsion; (d) an amount of neutralizing agent effective for rendering said polish composition neutral; and (e) 0 to 95 parts by weight additional water; and II. blending until a uniform polish composition is obtained.
13. A process as in Claim 12 wherein said silicone emulsion is provided by a process comprising the steps of:
I. blending (i) one part by weight of a blend of one or more polydimethylsiloxane oils, (ii.) 0.25 to 4 parts silicone oil soluble ultraviolet light absorbing agent per 100 parts by weight polydimethylsiloxane oils, (iii.) 1 to 30 parts of at least one emulsifying agent, and (iv.) sufficient water to provide a silicone oil and water emulsion having a silicone solids content of, approximately, 10 to 70 percent by weight;
II. heating said blend with agitation to 35 to 55°C;
III. emulsifying said blend by inverting a discontinuous silicone oil phase in a continuous aqueous phase.
I. blending (i) one part by weight of a blend of one or more polydimethylsiloxane oils, (ii.) 0.25 to 4 parts silicone oil soluble ultraviolet light absorbing agent per 100 parts by weight polydimethylsiloxane oils, (iii.) 1 to 30 parts of at least one emulsifying agent, and (iv.) sufficient water to provide a silicone oil and water emulsion having a silicone solids content of, approximately, 10 to 70 percent by weight;
II. heating said blend with agitation to 35 to 55°C;
III. emulsifying said blend by inverting a discontinuous silicone oil phase in a continuous aqueous phase.
14. A process as in Claim 13 wherein said emulsifying agent is an anionic emulsifying agent.
15. A process as in Claim 13 wherein said emulsifying agent is a nonionic emulsifying agent.
16. A process as in Claim 13 wherein said ultraviolet light absorbing agent is 2-ethylhexyl-2-cyano-3,3-diphenyl acrylate.
17. A process as in Claim 12 wherein said surfactant leveling agent is selected from the group consisting of alkyl-phenyl-O-(EtO)x H.
18. A process as in Claim 12 wherein said thickening agent is selected from the group consisting of carboxy vinyl polymers, carboxymethylcellulose, and guar gum.
19. A process as in Claim 13 wherein said polydimethylsiloxane fluids are selected from those having the general formula:
I., and II.
wherein Me represents methyl radicals and x and z are each positive integers ranging from, approximately, 20 to 1500 such that the viscosity of said fluid ranges from, approximately, 20 to 100,000 centistokes at 25°C.
I., and II.
wherein Me represents methyl radicals and x and z are each positive integers ranging from, approximately, 20 to 1500 such that the viscosity of said fluid ranges from, approximately, 20 to 100,000 centistokes at 25°C.
20. A process as in claim 14 or 15 wherein said emulsifying agent is present in an amount of, approximately, 0.01 to 0.3 parts for each part by weight of polydimethylsiloxane fluid to be emulsified.
21. A process as in claim 12 wherein said neutralizing agent is, approximately, 0 to 5 parts per 100 parts silicone emulsion of a neutralizing agent selected from triethanol amine, NaOH, and KOH.
22. An ultraviolet light absorbent silicone oil and water emulsion comprising:
(i) a polydimethylsiloxane oil or a blend of two or more polydimethylsiloxane oils to form an oil discontinuous phase of said emulsion;
(ii) sufficient water to form an aqueous continuous phase of said emulsion and provide said emulsion with a silicone solids content of, approximately, 10 to 90 percent by weight;
(iii) an amount of at least one emulsifying agent effective for dispersing said polydimethylsiloxane oil discontinuous phase in said aqueous continuous phase; and (iv) 0.0025 to 0.04 parts 2-ethylhexyl-2-cyano-3,3-phenyl acrylate incorporated into the polydimethylsiloxane oil discontinuous phase of said emulsion.
(i) a polydimethylsiloxane oil or a blend of two or more polydimethylsiloxane oils to form an oil discontinuous phase of said emulsion;
(ii) sufficient water to form an aqueous continuous phase of said emulsion and provide said emulsion with a silicone solids content of, approximately, 10 to 90 percent by weight;
(iii) an amount of at least one emulsifying agent effective for dispersing said polydimethylsiloxane oil discontinuous phase in said aqueous continuous phase; and (iv) 0.0025 to 0.04 parts 2-ethylhexyl-2-cyano-3,3-phenyl acrylate incorporated into the polydimethylsiloxane oil discontinuous phase of said emulsion.
23. A polish as in claim 3 wherein said emulsifying agent is a cationic emulsifying agent.
24. A polish as in claim 3 wherein said emulsifying agent is an amphoteric emulsifying agent.
25. A polish as in claim 5 wherein said emulsifying agent is present in an amount of, approximately, 0.01 to 0.3 parts for each part by weight of polydimethylsiloxane oil to be emulsified.
26. A process as in claim 15 wherein said emulsifying agent is present in an amount of, approximately, 0.01 to 0.3 parts for each part by weight of polydimethylsiloxane oil to be emulsified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000399400A CA1176828A (en) | 1982-03-25 | 1982-03-25 | Ultraviolet absorbent silicone based emulsions for vinyl polishes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000399400A CA1176828A (en) | 1982-03-25 | 1982-03-25 | Ultraviolet absorbent silicone based emulsions for vinyl polishes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1176828A true CA1176828A (en) | 1984-10-30 |
Family
ID=4122409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000399400A Expired CA1176828A (en) | 1982-03-25 | 1982-03-25 | Ultraviolet absorbent silicone based emulsions for vinyl polishes |
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| Country | Link |
|---|---|
| CA (1) | CA1176828A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5433890A (en) * | 1990-10-12 | 1995-07-18 | First Brands Corporation | Rubber and polymer preservative and protectant |
| GB2311238B (en) * | 1995-01-06 | 1999-07-14 | Armor All Prod Corp | Method for treating a vinyl surface against environmental exposure |
| US6206956B1 (en) | 1998-04-24 | 2001-03-27 | Wacker Silicones Corporation | Siloxane automotive protectant compositions |
| US6221433B1 (en) | 1998-04-24 | 2001-04-24 | Wacker Silicones Corporation | Siloxane automotive protectant compositions |
| US7378382B2 (en) | 2004-05-05 | 2008-05-27 | The Clorox Company | Rheologically stabilized silicone dispersions comprising a polydimethylsiloxane mixture |
| DE112010002084T5 (en) | 2009-05-26 | 2013-07-25 | The Armor All/Stp Products Company | Automotive protective compositions with improved vertical adhesion |
| US8974589B2 (en) | 2010-10-25 | 2015-03-10 | The Armor All/Stp Products Company | Silicone protectant compositions |
-
1982
- 1982-03-25 CA CA000399400A patent/CA1176828A/en not_active Expired
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5433890A (en) * | 1990-10-12 | 1995-07-18 | First Brands Corporation | Rubber and polymer preservative and protectant |
| GB2311238B (en) * | 1995-01-06 | 1999-07-14 | Armor All Prod Corp | Method for treating a vinyl surface against environmental exposure |
| US6206956B1 (en) | 1998-04-24 | 2001-03-27 | Wacker Silicones Corporation | Siloxane automotive protectant compositions |
| US6221433B1 (en) | 1998-04-24 | 2001-04-24 | Wacker Silicones Corporation | Siloxane automotive protectant compositions |
| US7378382B2 (en) | 2004-05-05 | 2008-05-27 | The Clorox Company | Rheologically stabilized silicone dispersions comprising a polydimethylsiloxane mixture |
| US8168578B2 (en) * | 2004-05-05 | 2012-05-01 | The Armor AII/STP Products Company | Water-based silicone dispersion containing low level of silicone oils |
| DE112010002084T5 (en) | 2009-05-26 | 2013-07-25 | The Armor All/Stp Products Company | Automotive protective compositions with improved vertical adhesion |
| US9546274B2 (en) | 2009-05-26 | 2017-01-17 | The Armor All/Stp Products Company | Automotive protectant compositions with improved vertical cling |
| US10385232B2 (en) | 2009-05-26 | 2019-08-20 | The Armor All/Stp Products Company | Automotive protectant compositions with improved vertical cling |
| US8974589B2 (en) | 2010-10-25 | 2015-03-10 | The Armor All/Stp Products Company | Silicone protectant compositions |
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