Abstract:
Solvent free liquid masking compositions comprise from about 5 to about 20 percent by weight of an aliphatic polyol; from about 1 to about 20 percent by weight of a plasticizer; from about 0.1 to about 1 percent by weight of a surfactant; and sufficient water to total 100 percent by weight, wherein the masking composition is water-soluble and devoid of volatile organic chemicals; it is devoid of polymer resins other than polyvinyl alcohol in amounts sufficient to render the film water-insoluble and is stain resistant to applied surfaces. A method for protecting selected surfaces from paint in painting operations comprises applying a solvent free liquid masking composition to selected surfaces of an object where paint subsequently applied is not desired; allowing the liquid masking composition to dry, forming a film; painting the object, whereby surfaces carrying the film are protected from the application of paint; and removing the film.
Abstract:
This invention provides methods and compositions for the temporary protection of activated plastic surfaces. The methods involve application of protective coating compositions to activated surfaces thereby protecting the surfaces from oxidation, soiling and mechanical damage. The coatings may be easily washed off leaving a clean activated surface suitable for overcoating.
Abstract:
A water-soluble coating or other deposit is produced from a formulation that is comprised of a curable liquid substance and a dispersed, particulate effervescing agent. The formulation is particularly useful as a solder resist in the manufacture of PCBs, and the preferred composition contains n-vinyl-2-pyrrolidone, N,N-dimethylacrylamide, and polyvinylpyrrolidone.
Abstract:
A double coating for the protection of a silver surface article is disclosed. A protective varnish coating, enclosing an inner varnish layer on the silver surface, intimately adheres to and is removable from said inner varnish layer.
Abstract:
This protective coating on a metal surface, especially for aircraft bodiesnd the like, has, on a pickled metal surface which may be anodized in addition to being pickled, a bonding primer layer and a polyurethane primer layer, an intermediate layer which is easily dissolved and a top layer forming a finish coat on said intermediate layer which protects the primer layers when the top coat is removed for a new paint job.
Abstract:
Hydrophobic materials deposited on the surface of a substrate having a primer release coating of a water-insoluble, water-swellable polymer can easily be removed from the substrate upon exposure of the water-swellable polymer to an aqueous liquid. For example, paint applied to the surface of a steel panel precoated with a lightly cross-linked polyacrylate can easily be removed upon the immersion of the panel in water.
Abstract:
A substrate surface which is to be partially coated with poly(arylene sulfide) is masked, in those areas not to be coated, with a masking composition containing diatomaceous earth, alkaline earth carbonate, or alkaline earth silicate. The substrate surface is then coated with poly(arylene sulfide) and, after the coating has cured, the coating is peeled away from the masked portion of the substrate. The masking composition is then washed from the finished product.
Abstract:
An all solution-processed deposition includes a non-water soluble, non-self-cracking film deposited by a solution process (e.g., spray, dip, spin coat, and the like), a water soluble, self-cracking film deposited by a solution process (e.g., spray, dip, spin coat, and the like), cracking of the film, and filling the cracks with a metal that is deposited in solution (e.g., by electroless disposition). A transparent substrate having a cracked water insoluble, non-self-cracking film surface coating includes a plurality of fissures therein extending to and exposing portions of the surface of the underlying transparent substrate is useful for producing a transparent conducting film.