Patent Application
20190040281
The present invention relates to methods and formulations useful for adhesion and pre-treatment of surfaces to facilitate spray applied coatings.
Some surfaces (e.g. glass) are not well suited for application of spray applied coatings. Such coatings do not adhere, or stick, to such surfaces. There is therefore a need for methods and formulations that facilitate preparation of such surfaces. The invention described herein solves the foregoing problem and additionally offers other objects and advantages that will be apparent to those of skill in the art.
In some aspects, the subject technology is applied using a high pressure, low volume, spray technique, wherein the constituents are atomized by compressed air and deposited on a substrate. In some aspects, the subject technology is applied using an aerosol spray technique wherein the constituents are atomized by a propellant and deposited on a substrate.
In some aspects, the subject technology comprises an elastomeric polymer component, film-forming binder component, and reducer solvent component. In other aspects, the subject technology comprises an elastomeric polymer component, film-forming binder component, polyurethane binder component, isocyanate component, and reducer solvent component.
Various objects (aka substrates) can be coated with the subject technology (aka adhesion promoter), including plastic, metal, Teflon, wood, ceramic, glass, concrete, cement, solid foam, rubber, elastomeric, so as to form a cohesive and adhesive film 1 thereon. The coated first object 2 can then be adhered to a second object 3. Alternatively, the film 1 can be cured for a period of 10 minutes to 24 hours. Thereafter, the film can be painted with any acrylic, latex, urethane, silicone, or acetate based paint which adheres to the adhesion promoter and in effect coats the object in a painted film.
In one aspect, a substantially transparent adhesive film layer 1 for use in a spray-applied conformal coating of a first object 2, comprises an elastomeric polymer component; a film-forming binder component; and a reducer solvent component.
In one aspect, a substantially transparent adhesive film layer 1 for use in a spray-applied conformal coating of a first object 2, comprises substantially 10-20% by weight of an elastomeric polymer component; substantially 2-8% by weight of a film-forming binder component; and substantially 70-85% by weight of a reducer solvent component.
In one aspect, the film-forming binder component includes any one or more of: an acrylic, polyurethane, vinyl, latex, cellulose acetate butyrate. In one aspect, the elastomeric polymer component is selected from the family of: polyisoprene, silicone, polyurethane, polysulfide, styrene-butadiene rubber (SBR), butyl, acrylic or polyacrylate, isoprene, polyisobutylene, ethylene-vinyl acetate (EVA), and vinyl and nitrile compounds.
In one aspect, the substantially transparent adhesive film layer comprises substantially 13-17% by weight of the elastomeric polymer component. In one aspect, the substantially transparent adhesive film layer comprises substantially 3% by weight of the film-forming binder component. In one aspect, the film-forming binder component includes any one or more of: an acrylic, polyurethane, vinyl, latex, or cellulose acetate butyrate. In one aspect, the substantially transparent adhesive film layer comprises substantially 77-81% by weight of the reducer solvent component.
In one aspect, the reducer solvent component includes any one or more of: naptha, toluene, xylene, acetone, naphtha, mineral spirits, methyl ethyl ketone, acetone, water, ethanol, isopropyl alcohol, n-butyl alcohol, methanol, ethyl benzene, cumene, Solane, n-propyl acetate, methyl acetate, methyl cyclohexane, p-Trifluoromethylphenyl chloride, and p-Chlorobenzotrifluoride, or other volatile solvent. In one aspect, the reducer solvent component comprises: a ratio of substantially 20-25% by weight naptha, substantially 40-60% by weight methyl acetate, and substantially 25-45% by weight p-Chlorobenzotrifluoride.
In one aspect, a substantially transparent adhesive film layer 1 for use in a spray-applied conformal coating of a first object 2 comprises an elastomeric polymer component; a film-forming binder component; a polyurethane binder component; an isocyanate component; and a reducer solvent component.
In one aspect, a substantially transparent adhesive film layer 1 for use in a spray-applied conformal coating of a first object 2 comprises substantially 7-12% by weight of an elastomeric polymer component; substantially 1-4% by weight of a film-forming binder component; substantially 10-20% by weight of a polyurethane binder component; substantially 1-5% by weight of an isocyanate component; and substantially 70-85% by weight of a reducer solvent component.
In one aspect, the elastomeric polymer component is selected from the family of polyisoprene; silicone; polyurethane; polysulfide; styrene-butadiene rubber (SBR); butyl, acrylic or polyacrylate; isoprene; polyisobutylene; ethylene-vinyl acetate (EVA); and vinyl and nitrile compounds.
In one aspect, the substantially transparent adhesive film layer comprises substantially 8-10% by weight of the elastomeric polymer component.
In one aspect, the substantially transparent adhesive film layer comprises substantially 1.5% by weight of the film-forming binder component, substantially 15% by weight of the polyurethane binder component, and substantially 2.5% by weight of the isocyanate component.
In one aspect, the film-forming binder component includes any one or more of an acrylic, polyurethane, vinyl, latex, or cellulose acetate butyrate.
In one aspect, the substantially transparent adhesive film layer comprises substantially 77-81% by weight of the reducer solvent component.
In one aspect, the reducer solvent component includes any one or more of naptha, toluene, xylene, acetone, naphtha, mineral spirits, methyl ethyl ketone, acetone, water, ethanol, isopropyl alcohol, n-butyl alcohol, methanol, ethyl benzene, cumene, Solane, n-propyl acetate, methyl acetate, methyl cyclohexane, p-Trifluoromethylphenyl chloride, and p-Chlorobenzotrifluoride, or other volatile solvent.
In one aspect, the reducer solvent component further comprises a ratio of substantially 20-25% by weight naptha, substantially 40-60% by weight methyl acetate, and substantially 25-45% by weight p-Chlorobenzotrifluoride.
In the various aspects of the subject technology described herein, the reducer solvent component is functionally compatible with the film-forming binder component and elastomeric polymer component; the film-forming binder component is compatible with the elastomeric polymer component, such that it is able to mix homogenously and does not have an adverse reaction to the elastomeric polymer, such as causing it to gel, and forms a film that flows evenly and consistently when atomized onto the surface of an object. In the various aspects of the subject technology described herein, the reducer solvent component assists in the deposition and post-deposition flow of the subject technology.
The various aspects of the substantially transparent adhesive film layer as described herein can be applied to a first object 2 with a high pressure, low volume, spray technique, wherein each of the elastomeric polymer component, film-forming binder component, and reducer solvent component are atomized by compressed air and deposited on a substrate. The various aspects of the substantially transparent adhesive film layer as described herein can be applied to a first object 2 with a high pressure, low volume, spray technique, wherein each of the elastomeric polymer component, film-forming binder component, polyurethane binder component, isocyanate component, and reducer solvent component are atomized by compressed air and deposited on a substrate.
The various aspects of the substantially transparent adhesive film layer as described herein can be applied to a first object 2 with an aerosol spray technique, wherein each of the elastomeric polymer component, film-forming binder component, and reducer solvent component are atomized by a propellant inside of a can and deposited on a substrate. In one aspect, the propellant inside of the can comprises propane. The various aspects of the substantially transparent adhesive film layer as described herein can be applied to a first object 2 with an aerosol spray technique, wherein each of the elastomeric polymer component, film-forming binder component, polyurethane binder component, isocyanate component, and reducer solvent component are atomized by a propellant inside of a can and deposited on a substrate. In one aspect, the propellant inside of the can comprises propane.
