Abstract: Apparatus for withdrawing liquid samples from liquid/solids media, e.g., phosphoric acid slurries, for the downstream analysis thereof, is comprised of (i) means adapted for insertion into a liquid/solids medium to selectively separate and receive a liquid fraction therefrom, (ii) a liquid storage first chamber in communicating relationship with said separating and receiving means (i), (iii) a liquid sample receiving second chamber in independent, parallel communicating relationship with said separating and receiving means (i) and which comprises means for exteriorly discharging sample contained therein, and (iv) means permitting the filling or emptying of said second chamber (iii) independently of said first chamber (ii).

Abstract: A detergent composition adopted for the washing of a fibrous textile substrate, notably a textile substrate comprising fibers of a synthetic organic polymer, includes an anti-redepositon effective amount of at least one hydrophilic/hydrophobic anti-redeposition copolymer which comprises at least one of the recurring units ethylene oxide and alkylene oxide, said copolymer being such as to reduce the zeta potential of the fibers of said textile substrate to a value of 0.5 times or less the zeta potential of the bare fiber content thereof, and said effective amount being such that at least 0.02 mg of said copolymer is adsorbed onto said textile fibers per gram of substrate.

Abstract: Elastomer/filler interface agents for filled vulcanizable matrices, e.g., natural or synthetic rubber, comprise the amido reaction products of tetraethylene pentamine ("TEPA") with amide-forming organosulfur compounds.

Abstract: Aqueous zeolite suspensions, e.g., of type A and especially detergent type 4A, are stabilized and maintained pumpable by adding thereto an effective stabilizing amount of at least one alkaline earth metal cation, advantageously magnesium.

Abstract: A novel anhydrous sodium tripolyphosphate, well adapted for detergency applications, has an X-ray diffraction pattern essentially characterizing a phase I sodium tripolyphosphate; a viscosity, in aqueous medium, characterizing a phase II sodium tripolyphosphate; a rate of hydration characterizing a phase I sodium tripolyphosphate; and which exhibits an ROH at 1 minute of greater than about 90.degree. C.

Abstract: Detergent compositions adopted for bleaching via photoactivation, e.g., by irradiation with visible light, are comprised of (i) at least one sensitizing agent of xanthene dyestuff type, e.g., a fluorescein, and (ii) at least one cyclic tertiary mono-, di- or tetramine, e.g., DABCO.

Abstract: Na tripolyphosphate compositions very rapidly hexahydrated, e.g., in water, and well suited for detergency applications, are comprised of a mass of sodium tripolyphosphate particulates prehydrated with a plurality of hexahydrated sodium tripolyphosphate crystals homogeneously distributed therethrough, (i) said particulates displaying a ratio of phase I crystalline form content to the total content of the phase I plus phase II crystalline forms of at least 50%, (ii) a homogeneous distribution of phase I crystalline form throughout both said particulates and said mass, (iii) a particle size distribution such that the average Rosen-Rambler-Bennett particle diameter ranges from 130 to 250.mu., with the maximum amount by weight of particles larger than 630.mu. in diameter being about 5% and the maximum amount by weight of particles smaller than 25.mu. in diameter being about 20%, (iv) a content in water ranging from about 0.

Abstract: Zeolites well suited for detergency, e.g., zeolites of type A, are adopted for mass production by simultaneously continuously introducing both an aqueous solution of sodium silicate and an aqueous solution of sodium aluminate into an unagitated first reaction zone to effect the continuous intimate admixture thereof, continuously transferring intimate admixture from said first reaction zone to a second zone of gelation to effect the continuous homogeneous gelling thereof, the time of retention of said intimate admixture in said first reaction zone being less than that period of time required for the gelation thereof, and thence effecting crystallization of a zeolite from said homogeneous gel.

Abstract: The uranium, yttrium, thorium and rare earth values contained in a phosphate rock are essentially totally recovered therefrom by, during the wet-process preparation of phosphoric acid from said phosphate rock, acidulating same in the presence of aluminum and/or iron, and optionally silica, and thence recovering said values from the phosphoric acid thus produced.

Abstract: Methyl acetate is carbonylated to acetic anhydride with carbon monoxide, in liquid phase, in an anhydrous reaction medium, in the presence of a catalytically effective amount of (i) nickel, (ii) methyl iodide, (iii) an alkali metal iodide, and (iv) a crown ether.

Abstract: An oxido-reduction process for nitrogen oxides contained in a gas stream also containing oxygen, in a countercurrent gas-liquid contact device. In this process,(a) for values of the ratio NO/NO.sub.2 greater than 1, in that section of the gas-liquid device where the NO.sub.x content in the gas stream is less than about 6000 vpm, the ratio K, which is the ratio of the liquid retention volume in m.sup.3 to the flow rate of the gas stream in Nm.sup.3 /hour, is increased so that the NO.sub.x are preferentially absorbed according to the reaction: NO+NO.sub.2 +H.sub.2 O.fwdarw.2HNO.sub.2 (liquid phase); and(b) oxidation is then induced, to reduce the value of the ratio NO/NO.sub.2 and to restore the conditions of stage (a).In practice, the operating point describes a curve A.sub.0 A.sub.2 B.sub.1 A.sub.3 B.sub.2 A.sub.4, as shown in FIG. 1.

Abstract: A precipitated silica having improved morphological characteristics and a process for making precipitated silica. In the precipitated silica of the present invention, the ratio of DBP oil index/CTAB specific surface area is between:7 and 4 for a range of CTAB of between 50-100 m.sup.2 /g,4 and 2.5 for a range of CTAB of between 100-200 m.sup.2 /g,2.5 and 2 for a range of CTAB of between 200-250 m.sup.2 /g,2 and 1.5 for a range of CTAB of between 250-300 m.sup.2 /g, and1.5 and 1.2 for a range of CTAB of between 300-350 m.sup.2 /g.

Abstract: p-Acyloxybenzene sulfonates, well suited for detergency applications, are facilely and rapidly prepared by acylating an alkali or alkaline earth metal, or ammonium p-phenol sulfonate, with an anhydride of a straight or branched chain carboxylic acid having from 7 to 12 carbon atoms, in a polar aprotic solvent and in the presence of a catalytically effective amount of an organic sulfonic acid.

Abstract: An apparatus for distributing a substance over a surface includes a feed compartment which is provided with substance feed means and which is defined by a bottom, a rear wall, two side walls and a front wall forming an overflow. A distribution compartment has a rear wall defined by the overflow, two side walls, a front wall, a bottom and an opening for the substance to flow out. The feed compartment is provided with baffle members to ensure distribution of the substance therein.

Abstract: A high temperature reactor includes a reaction chamber which is symmetrical about a longitudinal axis. Surrounding the reaction chamber are annular spaces to which a gaseous reactant is supplied. A plurality of conduits conduct the gaseous reactant from the annular spaces to the reaction chamber and introduces the gaseous reactant into the latter in the form of a helicoidal flow. A plurality of cooling conduits are disposed between the annular spaces and the reaction chamber for conducting a cooling medium. The cooling medium can also be conducted so as to cool a rear end of the reactor. The reactor can be used in combination with a contacting chamber to supply hot gases thereto.

Abstract: Phosphoric acid is produced, with concomitant recovery of solids comprising compounds of fluorine and silica, by (i) acidulating a first amount of phosphate ore with a strong acid to produce a first phosphoric acid slurry, (ii) filtering said first slurry to separate the liquid phosphoric acid content therefrom, (iii) concentrating a fraction of the phosphoric acid thus separated, (iv) recovering same, and (v) condensing the evolved vapors of concentration with a liquid absorbent to produce a solution of fluosilicic acid, (vi) acidulating a second amount of phosphate ore with said solution of fluosilicic acid together with a fraction of said first slurry, or together with a fraction of the phosphoric acid separated in the step (ii), to produce a second phosphoric acid slurry, (vii) filtering said second slurry to separate both the liquid phosphoric acid content and a solids fraction therefrom, said solids fraction comprising fluorine and silica compounds, (viiia) recycling the phosphoric acid thus separated f

Abstract: A slurry is discharged from an attack tank and degassed. At the top of the tank there is an overflow for discharging a first slurry portion. A container communicates with a pump. A receptacle is disposed between the overflow discharge and the container and comprises a downwardly inclined connecting surface for conducting the first slurry portion to the container. A conduit leads from the bottom of the tank and opens into the receptacle to combine a second slurry portion with the first slurry portion.

Abstract: Linear esters, e.g., alkyl adipates, are facilely prepared by reacting an alcohol and carbon monoxide with a monoolefin, in the presence of cobalt, optionally hydrogen, and a tertiary nitrogen base, and in a reaction solvent which comprises a 5- or 6-membered monoheterocycle containing from 1 to 3 identical or different, non-adjacent oxygen and divalent sulfur heteroatoms, with the proviso that such heterocycle can also contain from one to two carbon-carbon double bonds, and, if a 5-membered heterocycle, can also contain a nitrogen heteroatom separated from an oxygen or sulfur heteroatom by at least one ring carbon atom and linked to one of the adjacent carbon atoms by a double bond.

Abstract: A horizontal rotary table filter includes a device connecting the filter table to the carrier structure which provides freedom of movement between the two in the radial direction, to thereby maintain the filter table in a substantially planar condition under adverse operating conditions. The device preferably includes a radially oriented slideway connected to one of the table and the carrier structure, and slide shoes or rollers connected to the other of the table and the structure and disposed within the slideway. In addition to enabling relative radial movement, the device is so constructed as to provide a space between the table and the structure and thereby thermally insulate one from the other. Also disclosed is a more stable carrier structure which includes circumferential and diagonal connecting members disposed between adjacent radial gussets.

Abstract: The clean combustion of a combustible material is facilely carried out by (i) in situ generating a dispersing first stream of hot combustion gases by establishing a first downstream axially extending, axially symmetrical helical flowstream of combustion-supporting gases in a first combustion reaction zone and by introduction and combustion of a combustible fluid feedstream therein, (ii) serially directly contacting and intimately admixing the material cleanly combustible hereby with said first stream of hot combustion gases at a zone of reduced pressure thereof defining the inlet end of a second combustion reaction zone and whereat and downstream thereof said first stream of hot combustion gases is also in the configuration of an axially symmetrical helical flowstream, (iii) the amounts of said combustion-supporting gases and said combustible fluid being such as to effect essentially instantaneous dispersion and entrainment of fine particles of said cleanly combustible material at and downstream of said point