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Aerosol paint composition for adherence to plasticRelated Patent Categories: Synthetic Resins Or Natural Rubbers -- Part Of The Class 520 Series, Natural Rubber Compositions Having Nonreactive Materials (dnrm) Other Than: Carbon, Silicon Dioxide, Glass Titanium Dioxide, Water, Hydrocarbon, Halohydrocarbon, Ethylenically Unsaturated Reactant Admixed With A Preformed Reaction Product Derived From: (a) At Least One Polycarboxylic Acid, Ester, Or Anhydride; (b) At Least One Polyhydroxy Compound; And (c) At Least One Fatty Acid Glycerol Ester, Or A Fatty Acid Or Salt Derived From A Naturally Occurring Glyceride, Tall Oil, Or A Tall Oil Fatty Acid, At Least One Solid Polymer Derived From Ethylenic Reactants Only, With Polycarboxylic Acid Or Derivative And A Polyol At Least One Of Which Is Saturated, A Condensate Or Solid Polymer Thereof; Or With Solid Polymer Derived From At Least One Polycarboxylic Acid Or Derivative And At Least One Polyol Wherein At Least One The Reactants Forming The Solid Polymer Is Saturated, Polycarboxylic Acid Or Derivative, Polyol, Or Other Coreactant Contains An Ethylenic Group; Or Wherein A Condensate Thereof Has Been Prepared From A Polycarboxylic Acid Or Derivative And A Polyol And Subsequently Reacted With An Ethylenic Reactant, Solid Polymer Derived From Ethylenic Reactants Only Derived From At Least One Reactant Containing An Atom Other Than C, H, Or OAerosol paint composition for adherence to plastic description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20060235152, Aerosol paint composition for adherence to plastic. Brief Patent Description - Full Patent Description - Patent Application Claims
CROSS-REFERENCE TO RELATED APPLICATION [0001] This application is a continuation of U.S. application Ser. No. 10/637,155 filed Aug. 8, 2003, which claims the benefit of U.S. provisional patent application No. 60/402,859 filed on Aug. 10, 2002. The entirety of application Ser. No. 10/637,155 and provisional patent application No. 60/402,859 are hereby incorporated by reference. BACKGROUND OF THE INVENTION [0002] This invention relates to paint compositions in general and, more particularly, to paint compositions that can be dispensed in an aersosol spray from a sealed and pressurized container. [0003] Conventional aerosol paint compositions adhere poorly to plastic substrates. The aerosol paint composition of the present invention addresses this deficiency in conventional aerosol paint compositions. [0004] Examples of prior art aerosol paint compositions are disclosed in U.S. Pat. Nos. 4,362,838; 4,365,028; 4,923,097; and 5,348,992. BRIEF DESCRIPTION OF THE DRAWING [0005] The features, aspects, and advantages of the present invention will become better understood with regard to the following description, appended claims, and accompanying drawing where: [0006] FIG. 1 shows a schematic view of an aerosol container charged with an aerosol paint composition embodied in accordance with the present invention. DETAILED DESCRIPTION [0007] As used herein, the term "volatile organic solvent" shall mean an organic solvent capable of vaporizing at atmospheric pressure and a temperature in a range from about 35.degree. F. to about 140.degree. F. [0008] The aerosol paint composition of the present invention generally comprises a solvent-borne paint composition and an aerosol propellant. The aerosol paint composition is substantially free of water. [0009] The solvent-borne paint composition generally comprises a solvent system, a resin system and colorant. [0010] The solvent system comprises at least one volatile organic solvent, more preferably a mixture of at least two volatile organic solvents. Volatile organic solvents that may be used in the solvent system include alcohols, such as methanol, ethanol, isopropanol, 2-butoxy ethanol, and n-butyl alcohol; ketones, such as acetone, methyl ethyl ketone, methyl propyl ketone, and methyl isobutyl ketone; propylene and ethylene glycol ethers and acetates; aliphatic and aromatic hydrocarbons and naphthas; petroleum and wood distillates; turpentine; pine oil, and the like. Mixtures of the foregoing solvents may also be used and are in fact preferred. Preferably, the solvent system comprises acetone, toluene, xylene and at least one alcohol and at least one ketone. [0011] The amount of the solvent system present in the solvent-borne paint composition is at least 20 weight percent of the total weight of the solvent-borne paint composition. Preferably, the amount of the solvent system present in the solvent-borne paint composition is from about 20 to about 50 weight percent, more preferably from about 20 to about 30 weight percent of the total weight of the solvent-borne paint composition. [0012] The resin system comprises an acrylic modified alkyd resin and an acrylic modified chlorinated polyolefin resin. This combination of resins can provide coatings which are convenient to apply as aerosol products and which provide excellent adhesion to plastics, as well as good initial gloss and gloss retention and durability. These properties cannot be achieved with either resin by itself. [0013] The acrylic modified alkyd resin is comprised of an acrylic portion and an alkyd portion. [0014] The acrylic portion is formed from monomers comprising at least one acrylic monomer and can be a homopolymer or a copolymer. Preferably, the acrylic portion is a copolymer formed from at least one acrylic monomer and a vinyl aromatic hydrocarbon, such as styrene, a methyl styrene or other lower alkyl styrene, chlorostyrene, vinyl toluene, vinyl naphthalene, or divinyl benzene. More preferably, the acrylic portion is formed from at least one acrylic monomer and vinyl toluene. Suitable acrylic monomers include any compounds having acrylic functionality, such as alkyl (meth)acrylates, acrylic acids, as well as aromatic derivatives of (meth)acrylic acid, acrylamides and acrylonitrile. Typically, the alkyl (meth)acrylate monomers (commonly referred to as "alkyl esters of (meth)acrylic acid") will have an alkyl ester portion containing from 1 to 12, preferably about 1 to 5, carbon atoms per molecule. Suitable acrylic monomers include, for example, methyl(meth)acrylate, ethyl(meth)acrylate, butyl(meth)acrylate, propyl(meth)acrylate, 2-ethyl hexyl(meth)acrylate, cyclohexyl(meth)acrylate, decyl(meth)acrylate, isodecyl(meth)acrylate, benzyl(meth)acrylate, isobornyl(meth)acrylate, neopentyl(meth)acrylate, 1-adamatyl methacrylate and various reaction products such as butyl, phenyl, and cresyl glycidyl ethers reacted with (meth)acrylic acid, hydroxyl alkyl(meth)acrylates, such as hydroxyethyl and hydroxypropyl(meth)acrylates, amino(meth)acrylates, as well as acrylic acids such as (meth)acrylic acid, ethacrylic acid, alpha-chloroacrylic acid, alpha-cycanoacrylic acid, crotonic acid, beta-acryloxy propionic acid, and beta-styryl acrylic acid. One of the preferred acrylic monomers is butyl acrylate. [0015] The alkyd portion of the acrylic modified alkyd resin may be formed by one of the traditional processes, such as: (i.) the direct esterification of a drying oil fatty acid with a dicarboxylic acid and a polyhydric alcohol, (ii.) the indirect esterification of a drying oil by first alcoholization with a polyhydric alcohol and second esterification with a polybasic acid, or a (iii.) two-step process wherein the first step comprises the acidolysis reaction of a triglyceride oil with a trifunctional carboxylic acid or a trifunctional anhydride, and the second step comprises reacting the product of the first step with a multifunctional alcohol, as is disclosed in U.S. Pat. No. 4,983,716, which is hereby incorporated by reference. [0016] Typical raw materials for the formation of alkyds include triglyceride oils or the fatty acids thereof. These can be selected from the group consisting of linseed oil, soya oil, coconut oil, cottonseed oil, peanut oil, canola oil, corn oil, safflower oil, sunflower oil, dehydrated castor oil, fish oil, perilla, lard, walnut oil, tung oil, tall oil, the fatty acids thereof and mixtures thereof. Particularly preferred are those oils and acids containing unsaturation in the glyceride chains. Particularly preferred are soya oil, dehydrated castor oil and linseed oil and the fatty acids thereof. [0017] Multi-functional alcohols, and mixtures thereof, are also common raw materials for the production of alkyds. One suitable hexafunctional alcohol includes dipentaerythritol. One suitable tetrafunctional alcohol includes pentaerythritol. Suitable trifunctional alcohols include the group consisting of trimethylol propane, trimethylol ethane, glycerine, tris hydroxyethyl isocyanurate, and mixtures thereof, either alone or in combination with a difunctional alcohol selected from the group consisting of ethylene glycol, propylene glycol, cyclohexane dimethanol, and mixtures thereof. Additionally, dimethylol propionic acid can be used in combination with the trifunctional alcohol. [0018] Another typical raw material used in the formation of alkyds is multi-functional carboxylic acids or anhydrides. Suitable trifunctional carboxylic acids include trimelletic acid, trimesic acid, 1,3,5-pentane tricarboxylic acid, citric acid and others whereas suitable trifunctional anhydrides include trimelletic anhydride, pyromelletic anhydride and others. Difunctional carboxylic acids include phthalic acid, isophthalic acid, terephthalic acid, maleic acid and fumaric acid and mixtures thereof. Mixtures of such acids and anhydrides are also acceptable. [0019] The acrylic modified alkyd resin may be formed by contacting and reacting, under free radical polymerization conditions, the acrylic portion monomers with either the pre-formed alkyd resin or, alternatively, with the alkyd resin precursors during the formation of the alkyd resin. The acrylic modified alkyd resin may also be formed by other methods, such as first forming the acrylic portion so as to have pendant carboxy substituents (and optionally hydroxy substituents) and then reacting this polymer with a mixture of alkyd resin components or precursors, i.e., a polycarboxylic acid (or, alternatively, the corresponding anhydride), a polyhydric alcohol, and a fatty acid (or, alternatively, the corresponding triglyceride or fatty acid oil), as is disclosed in U.S. Pat. No. 4,010,126, which is hereby incorporated by reference. [0020] A commercially available acrylic modified alkyd resin that may be used in the aerosol paint composition is POLYCHEM 7060-V-60 sold by OPC Polymers of Columbus, Ohio. POLYCHEM 7060-V-60 is an acrylic-vinyl toluene alkyd resin formed from soya oil. Continue reading about Aerosol paint composition for adherence to plastic... Full patent description for Aerosol paint composition for adherence to plastic Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Aerosol paint composition for adherence to plastic patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. Each week you receive an email with patent applications related to your keywords. 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