Abstract: The initial power output and maintenance of a fluorescent lamp containing europium-activated barium magnesium silicate phosphor is significantly improved by combining the phosphor with a flux and subjecting the phosphor/flux mixture to a refiring and rewashing process before applying the phosphor to the interior of a fluorescent lamp envelope. Surface concentrations of europium and barium are significantly increased, while surface concentrations of magnesium and silicon are decreased.

Abstract: A liquid membrane method for removing scale deposits wherein a novel chelating composition is utilized. The composition used in the external and internal aqueous phases of said membrane comprises an aqueous solution having a pH of about 8 to about 14, and an aminocarboxylic acid or polyamine chelant. Additionally, a catalyst or synergist is used in the external phase only. Preferred chelants comprise diethylenetriamine pentaacetic acid (DTPA) or ethylenediaminetetraacetic acid (EDTA) or alkali salts thereof. Anions of organic and inorganic acids comprise the catalyst used in the external phase. Catalysts which can be used include fluoride, oxalate, persulfate, dithionate, hypochlorite, formate, thio, amino and hydroxy acetate anions. When the solution containing the composition is contacted with a surface containing a scale deposit, the deposit dissolves substantially more scale quicker than heretofore possible.

Abstract: A manganese-activated zinc orthosilicate phosphor having the empirical formula:Zn.sub.(2.00-x-y) Mn.sub.x SiO.sub.(4.00-y) (WO.sub.3).sub.zwherein:0.04.ltoreq.x.ltoreq.0.15;0.ltoreq.y.ltoreq.0.05; and0.ltoreq.z.ltoreq.0.002is provided. A method for preparing the above described phosphor is also disclosed. The method comprises blending a method for preparing manganese-activated zinc orthosilicate phosphor having the empirical formula:Zn.sub.(2.00-x-y) Mn.sub.x SiO.sub.(4.00-y) (WO.sub.3).sub.zwherein:0.04.ltoreq.x.ltoreq.0.15;0.ltoreq.y.ltoreq.0.05; and0.ltoreq.z.ltoreq.0.002;the method comprising: blending a zinc source, a manganese (II) source, a silicon source, and a tungsten source in amounts in accordance with the formula together with up to about 2 weight percent NH.sub.4 Cl and up to about 0.2 weight percent NH.sub.

Abstract: The initial power output and maintenance of a fluorescent lamp containing europium-activated barium magnesium silicate phosphor is significantly improved by combining the phosphor with a flux and subjecting the phosphor/flux mixture to a refiring and rewashing process before applying the phosphor to the interior of a fluorescent lamp envelope. Surface concentrations of europium and barium are significantly increased, while surface concentrations of magnesium and silicon are decreased.

Abstract: A green emitting phosphor for use in a color cathode ray tube and a cathode ray tube using the said green emitting phosphor are disclosed. The green emitting phosphor according to the present invention satisfies the following general formula:[ZnS:CuAuAlM](where M indicates at least one element of Ce, Tb, Eu, Sc and La.), i.e., the green emitting phosphor according to the present invention is prepared by adding a trace of one of the above mentioned rare earth elements to the conventional [ZnS:CuAuAl] green emitting phosphor. The green emitting phosphor thus prepared according to the present invention is highly luminescent and thermally stabilized, as well as improving the work efficiency.

Abstract: Treatment of contact lenses by an effective amount of bendazac, 5-hydroxybendazac or a salt thereof with a physiologically acceptable base.

Abstract: Disclosed are terbium-activated oxide phosphors having incorporated, at least one of ytterbium, thulium, samarium and europium. Incorporation of the element (s) has made it possible to produce phosphors exhibiting high brightness and suffering little brightness deterioration under high-density electron bombardment.

Abstract: Concentrated liquid and solid lubricating compositions having superior compatability with synthetic polymeric packaging materials, such as polyethylene terephthalate (PET), linear high density polyethylene (LHDPE), polystyrene, polymeric coated papers, and the like, can include 1 to 50 wt % of a fatty acid diamine salt having the formula [(R.sup.1)(R.sup.2)N(R.sup.5)NH(R.sup.3)(R.sup.4)].sup.+ (R.sup.6 COO).sup.- or [(R.sup.1)(R.sup.2)NH(R.sup.5)NH(R.sup.3)(R.sup.4)].sup.++ (R.sup.6 COO).sub.2.sup.- wherein R.sup.1 is a C.sub.10-18 aliphatic group; R.sup.2, R.sup.3, and R.sup.4 are independently hydrogen or an alkoxy group containing one to five alkylene oxide units; R.sup.5 is a C.sub.1-5 alkylene group; and R.sup.6 is a C.sub.10-18 aliphatic group. The lubricating compositions are particularly useful on the load bearing surfaces of conveyor belts used in the bottling of carbonated beverages in polyethylene terephthalate bottles.

Abstract: A phosphor composition is disclosed containing a titanium free hafnium zirconium germanate phosphor which emits electromagnetic radiation principally in the spectral region to which silver halide exhibits native sensitivity. To maximize the intensity of emission the ratio of host metals satisifies the relationship:D.sub.1+x Ge.sub.1-xwhereD is the combined sum of zirconium and hafnium andx is 0.15 to -0.50.An X-ray intensifying screen is disclosed containing the phosphor composition.

Abstract: A method for treating a phosphor, which comprises treating a phosphor with an aqueous reagent solution comprising a chelating agent, an oxidizing agent and an alkali agent.

Abstract: A process for production of lanthanum cerium aluminate phosphors represented by the formulaLa.sub.1-x Ce.sub.x Al.sub.y O.sub.(3/2)(y+1)wherein 0.10<x<1 and 11.0.ltoreq.y.ltoreq.12.5, the phosphor exhibiting a predominantly blue peak emission. Lanthanum (III) oxide, cerium (IV) oxide, and aluminum hydroxide are blended together in the desired ratios, then precalcined in air at about 850.degree. C. The precalcined product is then fired in a reducing atmosphere at about 1600.degree.-1800.degree. C. for about 3-4 hours, pulverized, refired in a reducing atmosphere at about 1600.degree.-1800.degree. C. for about 3-4 hours, and again pulverized to form the phosphor.

Abstract: A phosphor comprising a phosphor and zinc oxide formed in a suspension of the phosphor and attached to the surface of the phosphor.

Abstract: A luminescent phosphor composition composed essentially of particles formed by fusion of a phosphor and a sulfate of alkaline earth metal.

Abstract: Compounds of the formula I are described: ##STR1## wherein R.sup.1 and R.sup.2 independently of one another each represent a hydrogen atom, a (C.sub.1 -C.sub.2) alkyl group, a hydroxy (C.sub.2 -C.sub.3) alkyl group or a 2,3-dihydroxypropyl group and X is a fluorine atom, with the proviso that when R.sup.1 or R.sup.2 is hydrogen then the other is not a hydroxy (C.sub.2) alkyl group; processes for their preparation and aqueous hair coloring agents containing these compounds.

Abstract: A magnetic material represented by the formulaR.sub..alpha. Fe.sub.(100-.alpha.-.beta.-.gamma.-.delta.) N.sub..beta. H.sub..gamma. O.sub..delta.whereinR is at least one rare earth element inclusive of Y;.alpha. is from 5 to 20 atomic percent,.beta. is from 5 to 25 atomic percent,.gamma. is from 0.01 to 5 atomic percent and.delta. is from 3 to 15 atomic percent.From this magnetic material, a bonded magnet can advantageously be obtained, while maintaining excellent magnetic properties of the magnetic material used for the production thereof.

Abstract: A far-red emitting phosphor for cathode ray tubes used in liquid crystal light valves comprises lithium aluminum (or gallium) oxide, activated with iron or chromium. Increasing the activator concentration from 0.005 mole (commercially available) to about 0.015 to 0.05 mole increases the phosphor efficiency by about 50% and reduces the decay time from 30 msec (for the commerically available material) to 19 msec. Reducing the particle size to an average of 4 .mu.m or less provides the requisite high resolution for the CRT application.

Abstract: A fluorescent lamp phosphor product is recovered from a degraded aqueous suspension by treating a separated solids portion of the suspension with nitric acid to solubilize a decomposed portion of a rare earth activated yttrium oxide phosphor and form a remaining mixture of phosphors which may be reconstituted to a fluorescent lamp phosphor product suitable for use in a lamp.

Abstract: A trivalent metal phosphate phosphor having a composition of the formula:(Ln.sub.1-x Ln'.sub.x).sub.3 PO.sub.7 (I)wherein Ln is at least one member selected from the group consisting of yttrium, lanthanum, gadolinium and lutetium, Ln' is at least one member selected from the group consisting of terbium, cerium, europium, praseodymium, samarium, dysprosium, erbium, thulium and holmium, and x is a number satisfying 0.0001.ltoreq.x.ltoreq.0.5.

Abstract: A lanthanum cerium terbium gadolinium phosphate phosphor has the composition La.sub.1-x-y-z Ce.sub.x Tb.sub.y Gd.sub.z PO.sub.4, where x=0.2 to 0.45, y=0.127 to 0.137, and z=0.001 to 0.1. The phosphor has improved brightness and/or maintenance over a lanthanum cerium terbium phosphate phosphor without gadolinium. The phosphor can be prepared by reacting a lanthanum cerium terbium gadolinium oxide with boron phosphate in the presence of a flux forming compound containing lithium in an inert or reducing atmosphere.

Abstract: A method for eliminating carbonaceous contaminants and preventing the hydration/solubilization of the alumina protective coating of a phosphor is described. The method involves the heating a fluidized alumina coated phosphor in a fluidized bed at a temperature and for a period of time sufficient to preclude adversely affecting the protective oxide coating on the phosphor during subsequent water-based suspension processing without detrimentally altering the phosphor. After heating the fluidized phosphor is cooled and then added to a water-based suspension. The conditions for treating a manganese activated zinc silicate phosphor having a protective alumina coating are heating the fluidized phosphor at a temperature between about 700.degree. C. and about 850.degree. C. for a period of time from about 15 minutes to about 20 hours.A fluorescent lamp containing the phosphor prepared by the above described method is also described.