Abstract: This invention relates to a process for limiting the corrosive nature of cellulosic insulation which has been treated with a fire-retardant composition, by applying to the insulation an effective amount of an aqueous corrosion inhibiting solution. The corrosion inhibiting solution comprises an amine or alkali metal salt of an aromatic triazole, and an amine or alkali metal salt of an organic phosphate ester acid.

Abstract: This invention relates to a process for producing triazoles which comprises effecting a mixture in an aqueous medium of at least one benzimidazolone and one or more nitrites and heating the mixture to temperatures ranging up to about 350.degree. C. while maintaining pressures at levels sufficient to keep effective amounts of water present for the reaction.

Abstract: This invention relates to a process for producing benzotriazoles which comprises effecting a mixture in an aqueous medium of at least one aromatic orthodiamine and one or more nitrites and heating the mixture to temperatures ranging up to about 350.degree. C. while maintaining pressures at levels sufficient to keep effective amounts of water present for the reaction.

Abstract: Disclosed is a primer-surfacer composition comprising a vehicle of a balanced acrylic polymer of methyl methacrylate, butyl methacrylate and methacrylic acid, the resultant polymer having an acid value in the range of about 25 to 35, the polymer having a relative viscosity of about 16 to 32 poise measured at 40% polymer solids in a toluene and isopropyl alcohol solvent at 25.degree. C. The primer-surfacer may also contain dispersed pigments and/or fillers such as carbon blacks, talc, iron oxide, clay, etc. The primer-surfacer composition is primarily used over unprimed, primed or previously finished metal or plastic substrates to provide a surface to which an acrylic lacquer, an acrylic enamel, an alkyd enamel or a polyurethane enamel coating can be applied. The primer-surfacer of this invention may be easily sanded to provide a finish for vehicles of excellent intercoat adhesion, excellent chip and corrosion resistance and excellent fill.

Abstract: This invention relates to a novel composite pigment and method for its manufacture which comprises a finely-divided inert pigment as a core which has deposited on its surface a non-photoconductive grade of zinc oxide, the weight ratio of zinc oxide ranging from about 30% to about 80% of the total weight of the composite pigment and the composite pigment characterized by a specific surface in excess of about 10 square meters/gram. In rubber compounding, the composite pigment reduces the cost of the zinc essential to produce quality products and the composite pigment because it is itself photoconductive is of utility in photoconductive end uses.

Abstract: This invention is directed to a process for preparing 1,2-diaminobenzene which comprises acid hydrolyzing 2-benzimidazolone in an aqueous medium at elevated temperatures and pressures.

Abstract: This invention is directed to a process for stabilizing halogenated polymers by the addition of effective amounts of at least one aromatic triazole. More particularly, the invention is directed to the addition of at least one aromatic triazole to halogenated polymers which contain zinc ions.

Abstract: This invention relates to use of adsorption resins and ion exchange resins to separate selected organic materials and quantify their concentration in an aqueous solution based upon comparison to a visual standard. This process can be carried out in a relatively short time period and does not require special electronic equipment. Therefore, it can be conveniently used as a field test method to determine concentration of organic materials in aqueous solutions. This invention is especially useful in quantifying the concentration of triazoles in industrial cooling water.

Abstract: This invention is directed to a high solids coating composition and more specifically to a coating comprising low molecular weight hydroxy-containing polyesters, an epoxy resin and at least one crosslinking agent consisting of an isocyanate, an alkoxy alkyl melamine, or an amino condensation product.

Abstract: A coatings application apparatus pumps liquid paint through a flexible conduit within a rotary variable displacement peristaltic pump to a conventional applicator head. Through constant speed rotating lobes peristaltic action squeezes coating liquid within the conduit through the paint applicator control handle and applicator.The control handle permits changes in the paint flow rate. Upon constriction of the conduit within the control handle, flow rate is reduced, back pressure develops with resulting tube distortion. Distortion levered forces act upon a pre-set loaded pump spring. Variation in pump displacement results. The liquid flow rate within the supply conduit is inversely proportional to the back pressure so developed. If fluid flow is completely arrested by full supply tube constriction, back pressure becomes a maximum and pump displacement becomes zero. The pump continues to operate, however, at constant R.P.M., requiring no high starting torque.

Abstract: This invention relates to an improved barium carbonate prepared by precipitating barium carbonate on an inert core to effectively increase its sulfate scavenging utility by providing enhanced reactivity and dispersibility. This invention is especially useful in the prevention of efflorescence and scumming of bricks or ceramic tile caused by the migration of soluble sulfates during their manufacture.

Abstract: An automatic safety mechanism for airless spray equipment such as airless spray guns of the type having a trigger mechanism for actuating a gun spraying mechanism is provided. The safety mechanism comprises a lock mechanism for automatically locking the trigger mechanism in an "off" or non-spraying position upon full release thereof, including a locking member spring biased and disposed so that upon full release of the trigger mechanism the locking member is automatically operatively interposed between the trigger mechanism and hand-grip element of the spray gun to obstruct actuating movement of the trigger mechanism. The locking member is adapted for simple manipulation by the spray gun operator to disengage the lock mechanism and permit actuating movement of the trigger mechanism.

Abstract: This invention is directed to low molecular weight, solid addition products having a softening point above 100.degree. F. and the method of preparing same and more particularly to the use of said addition products as crosslinking agents in various polymeric powder coatings, e.g. polyesters. The solid, low molecular weight products are derived from the addition reaction of at least one monohydroxy, single-ring aromatic carbon compound and hexakis (alkoxymethyl) amino-triazine.

Abstract: This invention discloses that increases above about 1.75 ratio of pigment to vehicle in a dielectric coating for use in manufacture of reprographic (electrostatographic) papers unexpectedly increases the quality of the reproduction when the pigment is a calcined kaolin type clay. The inventive dielectric coating composition reduces the overall cost of static charge transfer reproductions without sacrifices in quality in the ultimate end use.

Abstract: This invention relates to a novel composite pigment and method for its manufacture which comprises a finely-divided inert pigment as a core which has deposited on its surface a non-photoconductive grade of zinc oxide, the weight ratio of zinc oxide ranging from about 30% to about 80% of the total weight of the composite pigment and the composite pigment characterized by a specific surface in excess of about 10 square meters/gram. In rubber compounding, the composite pigment reduces the cost of the zinc essential to produce quality products and the composite pigment because it is itself photoconductive is of utility in photoconductive end uses.

Abstract: A multi-element paint applicator including a housing or splatter-guard, a roller assembly including at least two cylindrical rollers arranged in parallel, mounting the rollers within the housing, and a handle centrally disposed on the housing. The rollers are disposed within the housing so that the weave of the cover of the first roller is the reverse of the weave of the second roller to provide a smooth painted surface.

Abstract: This invention is directed to low molecular weight, solid addition products having a softening point above 100.degree. F. and the method of preparing same and more particularly to the use of said addition products as crosslinking agents in various polymeric powder coatings, e.g. polyesters. The solid, low molecular weight products are derived from the addition reaction of at least one monohydroxy, single-ring aromatic carbon compound and hexakis (alkoxymethyl) amino-triazine.

Abstract: This invention is concerned with the modification of the hue of Alkali Blue pigments of known organic structures by intimate incorporation under aqueous alkaline conditions of a minor amount of a phenolic compound, illustratively beta naphthol. Upon recovery of the treated pigment under aqueous acid conditions, the hue of Alkali Blue is modified from a generally red shade blue to the greener end of the spectrum. The invention provides a novel means of color control and color modification with consequent correlative new compositions of matter.

Abstract: This invention is directed to a high solids coating composition and more specifically to a coating comprising low molecular weight hydroxy-containing polyesters, an epoxy resin and at least one crosslinking agent consisting of an isocyanate, an alkoxy alkyl melamine, or an amino condensation product.

Abstract: An airless spray gun reversible spray nozzle unit is provided adapted to replace the normal or standard fixed spray position unit without any modification of the external spray head. The external spray head normally positions and holds the fixed position spray nozzle unit in spray position in the airless spray gun. The present adaptation is made possible by means of a floating or sliding female ferrule axially movably positioned and slideable intermediately between a pair of spaced apart keyed flanges defining the unit size which act as stops therefor and assures a leak-proof machined fit of the reversible nozzle when the inventive spray nozzle unit is positioned to spray, or in reversed position so the orifice of the nozzle can be backwashed and freed of binding occlusions.The size, weight and form of the unit adds substantially no increase in weight or volume to the conventional fixed position airless spray head spray nozzle unit and is easily and quickly manually reversed when desired.