Abstract: A curing agent for fluorocarbon polymer coating compositions selected from the following group: ##STR1## where R is R.sup.1 NH, R.sup.1 is an aliphatic or cycloaliphatic hydrocarbon radical, R.sup.2 is C or an aliphatic hydrocarbon group, R.sup.3 is H or CH.sub.3, where x is 3 when R.sup.2 is a hydrocarbon group and x is 4 when R.sup.2 is C; the curing agents form ambient curing fluorocarbon polymer coating compositions;These compositions are used to provide corrosion and abrasion resistant coatings for large structures in chemical plants, oil refineries, oil drilling platforms, and the interior of smoke stacks of large utility companies.

Abstract: An apparatus for the inspection of fluids, particularly paints, having a housing with a cavity and enclosed with a light transmitting window and having an insert member positioned in the cavity which provides a fluid chamber where fluid flows by the window and wherein the flow is laminar and undirectional. This provides a view area of the liquid whose color parameter can be accurately measured by a colorimeter of spectrophotometer. The apparatus is particularly useful in the manufacture of paints so that the color of the paint being made can be accurately matched to a standard color.

Abstract: A coating composition in which the binder contains the following:(1) an acrylic polymer having pendent hydroxyl containing ester groups and(2) a polyisocyanate which has the formula ##STR1## where R.sup.4 is a hydrocarbon group having 6 carbon atoms. The composition can be used as an unpigmented clear finish or can contain convention pigments and be used as a colored finish. The composition is useful for refinishing trucks and automobiles and as an original finish for trucks, automobiles, boats, outdoor equipment and the like since the resulting finish is glossy, durable and weatherable.

Abstract: A low temperature curing coating composition containing 10-80% by weight of binder and 20-90% by weight of an organic solvent in which the binder is(1) an acrylic polymer containing monomers having reactive groups such as acrylamide, methacrylamide, methacrylic acid, acrylic acid and glycidyl methacrylate,(2) an epoxy resin,(3) a polyamine curing agent,(4) phenol and(5) a bicyclic amindine;The composition is used as a primer or topcoating for metal substrates and curings at temperatures of 0.degree. C. to ambient temperatures and provides a primer that has excellent adhesion to the substrate and provides a durable, corrosion resistant finish.

Abstract: A coating composition of a fluorocarbon polymer which cures at ambient temperatures in which the fluorocarbon polymer is of vinylidene fluoride and hexafluoropropylene and has a weight average molecular weight of about 50,000-600,000; the composition containsa metallic oxide such as magnesium oxide which is an acid acceptor, andan aliphatic or cycloaliphatic ester polyamine curing agent;preferably, the composition contains a reinforcing pigment such as titanium dioxide.The coating composition is used to provide corrosion and abrasion resistant coatings for large structures such as chemical plants, oil refineries, oil drilling platforms, and as a coating for the interior of smoke stacks of large utility companies.

Abstract: A primer composition for fluorocarbon polymer coatings which cures at ambient temperatures and contains a fluorocarbon polymer of vinylidene fluoride and hexafluoropropylene and has a weight average molecular weight of about 50,000-300,000;a metallic oxide such as magnesium oxide which is an acid acceptor andan amino alkyl alkoxy silane; preferably, the primer contains a reinforcing pigment such as titanium dioxide;The primer is used in combination with fluorocarbon polymer coatings to provide corrosion and abrasion resistant coatings for equipment used in chemical plants, oil refineries, oil drilling platforms, and for the interior of smoke stacks of large utility companies.

Abstract: An apparatus for delivering an accurate volume of fluid from supply vessel to a mixing vessel in which a piston pump or gear pump is driven by a motor controlled by a motor controller amplifier coupled to a computer which allows the pump to be driven an exact number of strokes or revolutions to move the desired amount of liquid from the supply vessel to a mixing vessel. The apparatus is particularly useful in mixing paints wherein accurate amounts of mill bases are required to be added to achieve a desired paint color.

Abstract: A coating composition of a fluorocarbon polymer which cures at ambient temperatures in which the fluorocarbon polymer is of vinylidene fluoride and hexafluoropropylene and has a weight average molecular weight of about 50,000-600,000; the composition containsa metallic oxide such as magnesium oxide which is an acid acceptor, andan aliphatic or cycloaliphatic polyamine curing agent;preferably, the composition contains a reinforcing pigment such as titanium dioxide.The coating composition is used to provide corrosion and abrasion resistant coatings for large structures such as chemical plants, oil refineries, oil drilling platforms, and as a coating for the interior of smoke stacks of large utility companies.

Abstract: A coating composition of a fluorocarbon polymer which cures at ambient temperatures in which a fluorocarbon polymer in solution is of vinylidene fluoride and hexafluoropropylene and has a weight average molecular weight of about 5,000-600,000; the composition also containsa dispersed fluorocarbon polymer of the following group polytetrafluoroethylene, fluorinated ethylene/propylene polymer, polyvinyl fluoride, polyvinylidene fluoride, copolymer of tetrafluoroethylene/perflouroalkoxyvinyl ether;a metallic oxide such as magnesium oxide which is an acid acceptor; andan aliphatic or cycloaliphatic polyamine curing agent; preferably, the composition contains a reinforcing pigment such as titanium dioxide.The coating composition is used to provide corrosion and abrasion resistant coatings for large structures in chemical plants, oil refineries, oil drilling platforms, and as a coating for the interior of smoke stacks of large utility companies.

Abstract: A coating composition used as a sealer coat in the repair of auto and truck finishes which contains as the film forming binder an iminated acrylic polymer, a polyester resin and an ethylene vinyl acetate copolymer and optionally contains ultraviolet light stabilizers.

Abstract: An improved method for instrumentally characterizing the optical properties of a surface containing metallic particles such as a paint containing metallic flakes by using multiangular spectrophotometric or colormetric measurements to derive color constants for the paint, wherein the improvement comprises using three multiangular measurements, preferably 15.degree., 45.degree. and 110.degree. as measured from the specular angle.

Abstract: A process for making high solids acrylic dispersion lacquer coating composition having an acrylic polymer binder content of about 25-45% by weight in a nonaqueous medium; wherein the acrylic polymer is a blend of(1) Polymer A of methyl methacrylate and a polymerized monomer of allyl methacrylate, alkyl amino alkyl methacrylate or mixtures thereof;(2) Copolymer B of methyl methacrylate and an alkyl acrylate having 6-12 carbon atoms in the alkyl group; and(3) A graft copolymer of Polymer A which forms a backbone of the graft copolymer and Copolymer B attached to the backbone which forms side chains of the graft copolymer; andwherein the nonaqueous medium is a blend of(a) an aliphatic solvent which at 25.degree. C. is a nonsolvent for Polymer A and a solvent for Copolymer B; and(b) a coalescing solvent for the binder;the composition is useful as an exterior finish for automobiles and trucks.

Abstract: A substrate coated with a dried coalesced composition of a liquid carrier and a binder of a blend ofa. an acrylic polymer containing glycidly groups, andb. a crosslinkable polysiloxane having attached to the silicone atoms of its backbone alkyl groups, phenyl groups and hydroxyl groups;optionally, a fluorocarbon polymer can be added to the composition;the composition cures at ambient temperatures and provides a finish to metal substrates that is durable, weatherable and heat resistant and is particularly useful for coating pipes, tanks, vessels and stacks of plants and refineries that are subjected to weathering, chemicals and heat.

Abstract: A coating composition that contains as the film-forming binder an acrylic vinyl oxazoline polymer, an alkyd resin and an additive of a polyisocyanate of the formula ##STR1## where R.sup.7 is a hydrocarbon group having six carbon atoms; ultraviolet light stabilizers, an organic solvent and optionally a plasticizer; this composition cures rapidly at ambient temperatures to a tough, durable, weatherable, scratch resistant and gasoline resistant finish particularly useful for repairing finishes of automobiles or trucks.

Abstract: A personal dosimeter for the collection of formaldehyde is improved by modifying the sodium bisulfite absorbant medium with sodium bicarbonate.

Abstract: A coating composition of a binder of film-forming constituents and nonaqueous liquid carrier, wherein the binder is a film-forming resin containing reactive carboxyl groups, hydroxyl groups, amide groups, glycidyl groups or a mixture of any of these groups and a crosslinking agent; and in addition the composition contains about 0.1-10% by weight, based on the weight of the binder, of a rheology control additive of(1) colloidal silica and(2) a polyvinyl pyrrolidone having a weight average molecular weight of about 3,000-500,000;The composition has excellent rheology control and can be used as exterior finishes on automobiles and trucks.

Abstract: An additive for coating compositions which is a blend of(A) 20-50% by weight of a polyisocyanate having the formula ##STR1## where R.sup.1 is (CH.sub.2).sub.6' (B) 1-15% by weight of an ester of a polyalkylene glycol alkyl alkylate, an alkyl phthalate or an alkyl aromatic phthalate(C) 1-10% by weight of a blend of ultraviolet light stabilizers and(D) 25-78% by weight of organic solvent; the additive can be added to acrylic lacquers, nitrocellulose lacquers, acrylic-alkyd enamels and acrylic polyurethane enamels to provide flexible finishes for flexible substrates used in automobile and truck bodies.

Abstract: The coating composition useful as the exterior finish on automobiles and trucks contains about 25-50% by weight of a binder of film-forming constituents and 50-75% by weight of a volatile organic solvent carrier and additionally contains 2-150% by weight, based on the weight of the binder, of pigment; the binder is about 20-70% by weight of an acrylic polymer containing reactive hydroxyl, carboxyl, amide groups or any mixture of such groups, about 0-40% by weight of a hydroxy-terminated polyester urethane resin and about 25-40% by weight of an alkylated melamine formaldehyde crosslinking resin; in addition the composition contains about 4-20% by weight, based on the weight of the binder, of a rheology control agent of an alcohol soluble cellulose acetate butyrate having a buryryl content of about 45-50% by weight, a hydroxyl content of about 4-5% by weight and a viscosity of about 0.2-0.4 second.

Abstract: A coating composition having a liquid carrier and a binder of a blend ofa. an acrylic polymer containing glycidyl groups andb. a crosslinkable polysiloxane having attached to the silicone atoms of its backbone alkyl groups, phenyl groups and hydroxyl groups;optionally, a fluorocarbon polymer can be added to the composition;the composition cures at ambient temperatures and provides a finish that is durable, weatherable and heat resistant and is particularly useful for coating pipes, tanks, vessels and stacks of plants and refineries that are subjected to weathering, chemicals and heat.

Abstract: An additive for alkyd resin coating compositions which is a blend of an isocyanate isocyanurate, dibutyltindilaurate and an organic solvent. Coating compositions containing this additive are used for coating automobiles and trucks and have good initial gloss and hardness and good gloss retention on weathering.