Abstract: Liquids, such as petroleum fuels, are tagged with chemical compounds having a light-absorbing identifying chemical moiety and at least one polymerizable chemical moiety. The marker is identified in a specimen of the liquid by polymerizing the marker compound, generally along with additional co-polymerizable material.

Abstract: A weldable heat curable liquid coating composition for steel is provided that exhibits improved mar resistance without impairing the weldability characteristics of the coating. To this end, the composition contains a conductive welding aid of iron dust. The weldable coating when applied to steel and cured thereon to a dry film allows for spot welding of the coated steel without requiring special welding equipment and techniques.

Abstract: Opaquely pigmented or thick filmed powder coatings for heat sensitive substrates, such as wood, wood composites, for example, medium density fiber board, and plastics, that can be fully cured, especially near the substrate, through the incorporation of a dual cure system in the powder comprising a thermal initiator, such as a peroxide, along with a UV initiator. The UV initiator cures the surface, while the thermal initiator cures at the substrate. Surprisingly, virtually no pregelation occurs during the heated melt and flow out step prior to UV curing. Consequently, the hardened film finish formed on the surface exhibits exceptional smoothness which is comparable to that of traditional UV curable powders. The hardened film finish is also fully cured throughout and exhibits exceptional adhesion to the substrate which cannot be achieved with traditional UV curable powders that have been pigmented.

Abstract: A negative acting photoimageable composition comprisesA) between about 30 and about 70 wt %, based on total weight of A) plus B), of a organic binder polymers having sufficient acid functionality to render said photoimageable composition developable in alkaline aqueous solution,A) comprising between about 3 and about 65 wt % relative to total of A) plus B) a binder polymer A') having a weight average molecular weight between about 5000 and about 40,000 and a T.sub.g of between about 40 and about 100, and 5 to 67 wt % relative to total of A) plus B) a binder polymer A") having a weight average molecular weight between about 41,000 and about 200,000 and a T.sub.g of between about 40 and about 100,B) between about 30 and about 60 wt %, based on total weight of A) plus B), of .alpha.,.beta.-ethylenically unsaturated compounds, said component B) comprisingB') an isocyanate trimer having tri-.alpha.,.beta.

Abstract: A coating powder for providing a high temperature resistance coating has a silicone resin binder system which is either substantially all silicone resin or an --OH-- functional silicone resin adduct plus blocked, multi --NCO functional curative. The coating powder is pigmented with titanium dioxide which is either non-coated or coated with a sufficiently low level of an inorganic oxide such that when slurried in water, the pH is 7 or above. The coating powder preferably contains at least 40 phr mica and/or calcium metasilicate, preferably between 2 and about 20 phr aluminum. The coating powder may also contain zinc to protect the underlying substrate from corrosion and high-temperature pigments, particularly ceramic pigments.

Abstract: A composition and method for stripping tin or tin-lead alloys, and any underlying copper-tin intermetallic, from a copper surface. The composition includes an aqueous solution of approximately 5-60% nitric acid by weight, approximately 0.5-30% ferric nitrate by weight, and a nitric acid stabilizer selected from the group consisting of an amino-triazole, an amino-isoxazole, and a linear amino sulfone in the form H.sub.2 N--SO.sub.2 --R, where R is any alkyl or benzene group, wherein the stabilizer is present at a concentration sufficient to inhibit exothermic conditions, emission of toxic NOx gas, and copper attack. A soluble source of halogen ion, such as hydrochloric acid, can be added to the composition to yield a uniform, reflective, bright pink copper appearance, and to further reduce sludge formation. In addition, sludge formation can be eliminated by adding a soluble source of sulfate ion (SO.sub.4.sup.-2) to the composition.

Abstract: Carbonyl compounds, such as ketones, aldehydes, esters, amides, anhydrides and carboxylic acids are added to a material, particularly a liquid material as markers. Subsequently the carbonyl compound(s) are identified by measuring the absorbency peak(s) of the carbonyl compounds in the mid-IR range. Carbonyl compounds soluble in non-polar solvents and substantially insoluble in water are particularly suitable for tagging and identifying petroleum fuels. For use in petroleum fuels, the carbonyl compound(s) preferably contains no element other than carbon, hydrogen, oxygen and nitrogen. Digital carbonyl marker systems, i.e., systems containing two or more carbonyl compounds in predetermined ratios, can be determined quantitatively with instruments, such as SpecTrace.TM. which measure absorbance in the mid-IR region.

Abstract: A positive acting photoresist composition (e.g., a monolayer dry film) which is strippable in aqueous alkaline solution comprises a photo acid generator and a UV-transparent resin binder system which allows efficient photo bleaching of the photoactive component. An acid functional cellulosic resin may be the only binder resin, an acidic acrylate resin being optional. The dry coating is flexible and may be used as an etch and plating resist.

Abstract: Liquid petroleum products and industrial liquids are marked with highly soluble silent fluorescent markers having the formula: ##STR1## where R is selected from a linear or branched C.sub.1 -C.sub.18 alkylcarboxy radical.

Abstract: High-tensile steel, particularly automotive coil springs formed of high-tensile steel, are coated first with an epoxy coating powder containing high levels of zinc and then with a poly(ethylene/acrylic acid copolymer) coating powder. Both coatings are applied and fused or fused and cured at temperatures of 325.degree. F. or below so as not to affect the metallurgic properties of the steel. The dual-coating protects the steel from pitting and corrosion.

Abstract: Systems and apparatus combinations for producing a powder coating are provided wherein a stream of a powder coating precursor including at least one resin and at least one additional powder coating ingredient is contacted with a process fluid effective to reduce the viscosity of the powder coating precursor to allow processing of the powder coating precursor at a lower temperature.

Abstract: A polyester-based coating composition capable of forming a striated pattern on a metal surface at a film thickness less than half of that of PVC plastisol films is provided by a thixotropic composition having a thix index of from about 1.5 to about 3 and comprising a hydroxy-functional polyester, a thixotropy-inducing rheologic agent and curing agent. The striated coating is applied to sheet metal in a coil coating operation by introducing the composition into a paint pan of a coil coater, transferring said composition from said paint pan to an applicator roll by rotating a pick-up roll in contact with the composition and with said applicator roll; continuously withdrawing a sheet of metal from a coil thereof and coating said sheet by contacting it with the applicator roll; curing the coating on said sheet by passing the sheet through an oven at an elevated temperature; and continuously rewinding said sheet into a coil.

Abstract: A process for recycling fiber products employs an aqueous deinking medium containing an effective amount of a collector chemical. The collector chemical comprises a surface active agent which is or can be derived from lanolin. Alkoxylated lanolin derivatives are preferred.

Abstract: A silicone resin for forming a coating powder has organic substitutents selected from the group consisting of phenyl, methyl, C.sub.2 through C.sub.6 alkyl and mixtures thereof; a viscosity of between about 500 and about 10,000 cps at 150.degree. C.; a condensable hydroxyl content of between about 2.0 and about 4.5 wt %; a glass transition temperature of about 55.degree. C. or above; and about 0.2% or less of organic solvent.

Abstract: An asphalt release agent for preventing hot road asphalt, especially polymer-modified asphalt, from sticking to surfaces of delivery truck beds is provided. The release agent includes a water-based mixture of polycycloaliphatic amines and polyalkylene glycols. The release agent is applied onto the truck beds to create a slippery non-stick surface so that the road asphalt which comes in contact with such truck bed surfaces will not adhere.

Abstract: Markers which are soluble in petroleum fuel and are extractable from petroleum fuel by either acidic aqueous solutions or basic solutions and develop a color in the presence of the extracting acidic or basic aqueous solution, are identified by passing a specimen putatively containing the marker through an acidic resin column or a basic resin column, as the case may be.

Abstract: A negative-acting photoimageable composition useful as a photoresist comprises an acid-functional binder, a photopolymerizable component, a photoinitiator chemical system comprising 9-phenyl acridine or a homologue thereof, and a dibenzoate plasticizer.

Abstract: The invention provides a negative-acting photoimageable composition comprising A) between about 30 and about 80 wt % based on total weight of A) plus B) of a binder polymer having acid functionality sufficient to render said photoimageable composition developable in alkaline aqueous solution, B) between about 20 and about 70 wt % based on total weight of A) plus B) of an addition-polymerizeable, non-gaseous .alpha.,.beta.-ethylenically unsaturated compound(s) capable of forming a high polymer by free-radical initiated chain-propagating addition polymerization, at least about 50 mole percent of the .alpha.,.beta.-ethylenically unsaturated moieties of B) being methacrylic moieties, and C) between about 0.1 and about 20 wt % based on total weigh of A) plus B) of a photoinitiator chemical system. Photopolymerizable component B comprises, at between about 1 and about 70 wt. % relative to total of A) plus B), a urethane oligomer having, in addition to .alpha.,.beta.

Abstract: The invention provides a negative-acting photoimageable composition comprising A) between about 30 and about 80 wt % based on total weight of A) plus B) of a binder polymer having acid functionality sufficient to render said photoimageable composition developable in alkaline aqueous solution, B) between about 20 and about 70 wt % based on total weight of A) plus B) of an addition-polymerizeable, non-gaseous .alpha.,.beta.-ethylenically unsaturated compound(s) capable of forming a high polymer by free-radical initiated chain-propagating addition polymerization, at least about 50 mole percent of the .alpha.,.beta.-ethylenically unsaturated moieties of B) being methacrylic moieties, and C) between about 0.1 and about 20 wt % based on total weight of A) plus B) of a photoinitiator chemical system, the photoinitiator chemical system comprising between about 0.005 and about 3 wt % relative to total weight of A) plus B) of triphenyphosphine and between about 0.

Abstract: A water soluble dicarboxylic acid or an alkali metal salt thereof acts as a mold release agent for salt pellets when a salt-contacting surface of a roll-type briquetting press is coated with from about 0.02 to about 5 mg/cm.sup.2 of a powder of the acid or alkali metal salt just prior to a charge of salt. The coating is achieved by spraying an air stream entraining the powder onto the press rolls or by spraying a solution of the release agent onto the rolls and evaporating the solvent to leave the powder on the rolls. The acid has from 6 to 10 carbon atoms; adipic acid being preferred. Salt pellets having a layer of the powder on their surface may be used in water softening systems wherein the pellets sit in a brine reservoir and supply salt for the recharging of an ion exchange resin. There is no formation of an unsightly scum on the surface of the brine and on the sides of the reservoir.