Abstract: A solid-state chlorine dioxide generator for generating an aqueous solution of ClO2 is formed within a block comprising an eductor for establishing a vacuum pressure and a reaction column for producing ClO2 from precursor chemicals. The eductor has a water stream flowing therethrough which establishes a vacuum pressure and draws the ClO2 from the reaction column into the water stream to form an aqueous ClO2 solution. The reaction chamber comprises a novel transition zone of increasing flow area wherein the precursor chemicals thoroughly mix resulting in conversion efficiencies of precursors into ClO2 of 95% and above.

Abstract: An erosion control mat having buoyant fronds is deployed in a body of water to enhance the accumulation of sediments. The mat includes a plurality of frond lines arranged in a fanfold pattern. Each frond line include a continuous elongate strip and a plurality of side-by-side buoyant fronds (strands). The frond lines are made of linear low density polyethylene (LLDPE), preferably metallocene catalyzed LLDPE.

Abstract: A solid-state chlorine dioxide generator for generating an aqueous solution of chlorine dioxide is formed within a block and includes (a) an eductor for establishing a vacuum, and (b) a reaction column for producing chlorine dioxide from precursor chemicals. The eductor has a water stream flowing there throughwhich establishes a vacuum and draws the chlorine dioxide from the reaction column into the water stream to form aqueous chlorine dioxide. The reaction column has a transition zone of increasing flow area wherein the precursor chemicals thoroughly mix resulting in conversion efficiencies of precursors into chlorine dioxide of 95% and above.

Abstract: An apparatus for injecting a treatment chemical into an oil well produced using a subsurface pump, preferably a subsurface rotary pump, is described. Crude oil is pumped upward from a subsurface oil production zone through a central production pipe in the well. A small portion of produced fluid is diverted through a by-pass line interconnecting the production pipe and the annular space of the well between the production pipe and the well casing. A venturi nozzle comprising a throat of reduced diameter is mounted in the by-pass pipe. A suction pipe interconnects a chemical storage container containing a treatment chemical with the nozzle throat. Under the action of the venturi nozzle a suction pressure is created in the nozzle throat whereby the treatment chemical is drawn through the suction pipe and mixes with the fluid in the by-pass line thereby delivering the chemical to the well annulus.

Abstract: A dust mop features a dust collector layer made of electrostatically charged nonwoven fabric. The electrostatic charge (a) enables the dust collector to be detachably mounted to the mop head by electrostatic cling; and (b) improves the dust collecting ability of the dust collector.

Abstract: A dust mop features a dust collector layer made of electrostatically charged nonwoven fabric. The electrostatic charge (a) enables the dust collector to be detachably mounted to the mop head by electrostatic cling; and (b) improves the dust collecting ability of the dust collector.

Abstract: Granules composed of a particulate breaker chemical dispersed in a wax matrix are used in fracturing operations to break hydrocarbon liquids gelled with salts of alkyl phosphate esters. The wax granules are solid at surface temperature and melt or disperse in the hydrocarbon liquid at formation temperature releasing the breaker chemical to react with gelling agent.

Abstract: Electrostatically charged nonwoven webs (fabrics) are used in displays, quilting, toys, and pattern making. The electrostatic charge causes the nonwoven webs to cling to cloth or paper without the need of pins or connectors. In pattern making the charged nonwoven web is detachably secured to a mastern pattern permitting the web to be marked and cut to form a specific sized pattern which is used to cut cloth in a selected size.

Abstract: A thermoplastic fabric for use as a support fabric in interfacing, underlining, and applique carries a persistent electrostatic charge that causes the fabrics in contact therewith to cling thereto in a nonslip relationship. This facilitates sewing of the layers together. The preferred support fabric is a nonwoven fabric such as meltblown and spunbonded fabrics.

Abstract: Wastewater lagoons are treated with chlorine oxygen compounds to react with odorous sulfides and mercaptans emanating from the lagoon. A fine spray of an aqueous solution of the chlorine oxygen compound (HOCl, NaClO.sub.2, or NaOCL) is applied over the lagoon. The chlorine oxygen compounds react with the sulfides in the vapor zone above the lagoon, converting the odorous compounds to non-odorous compounds.

Abstract: A form fitting diaper comprises a backsheet having a front section, a back section, and a crotch section, and has bonded thereto an absorbent layer. The diaper further comprises a pair of elastic side panels bonded between the front and back sections of the backsheet and define therewith a circumferentially continuous and elastic waist, and further defining leg openings. The side panels having substantially unidirectional elasticity whereby the panels are elastic in the circumferential direction and substantially inelastic in the direction perpendicular thereto. The side panels being of composite construction comprising an elastomeric layer with a unidirectionally elastic nonwoven layer bonded thereto. The composite combines the barrier and strength properties of the elastomeric layer with the unidirectional elasticity and fabric-like properties of the nonwoven layer. The unidirectional elasticity of the composite is useful for putting on and taking off the diaper.

Abstract: A yarn of meltblown thermoplastic fibers is manufactured by meltblowing fibers onto a collector to form a thin web thereon, and continuously withdrawing and twisting the web into a generally circular yarn. In a preferred embodiment the yarn has a reinforcing cord disposed therein to lend strength thereto. The yarn is suited for many applications, including knitted and woven fabrics, and cartridge filters.

Abstract: A modular die for applying hot melt adhesive onto a substrate comprises (a) a manifold having adhesive and air passages formed therein, (b) a plurality of self-contained and interchangeable die bodies mounted on the manifold, and (c) a die head detachably mounted on each die body. The die heads are selected from melt spraying, meltblowing, and linear bead applicators permitting the application of a variety of adhesive patterns on the substrate.

Abstract: A quick change pump assembly for an adhesive pumping system includes three main components: a manifold, a pump, and a motor. These components are secured to a subframe which is adapted to be detachably mounted on the mainframe of the system. The subframe with the three components mounted thereon is selectively movable between an operating position and a withdrawn position. In the withdrawn position, any of the components on the subframe may be replaced or repaired.

Abstract: Water-in-oil emulsions are broken by the use of adducts prepared by reacting high molecular weight polyalkylene glycol with ethylene oxide, or diglycidyl ether, or both ethylene oxide and diglycidyl ether. The adduct demulsifiers may be used alone or as a blend with other demulsifiers.

Abstract: Gaseous or liquid hydrocarbon is treated with a scavenging compound comprising an oil soluble 1,3,5-trihexahydro-1,3,5-tert.-butyltriazine. The compound is an effective nonregenerated scavenger for oil field produced fluids, particularly sour hydrocarbon liquids.

Abstract: A device for detachably adhering a manipulative to a substrate using electrostatic charges is described. The invention comprises a thermoplastic substrate having imparted thereto a substantially persistent electrostatic charge with paper and/or fabric manipulatives removably adhered thereto by electrostatic attraction. The present invention may be useful for creating visual displays such as display boards, design boards for quilting patterns, sewing patterns, and toys such as dolls and educational games or aides using manipulatives in visual displays. The substrate is preferably made of polyolefin nonwoven webs, particularly polypropylene or polyethylene meltblown webs.

Abstract: Meltblown thermoplastic fibers are cooled by microsized water droplets produced by airless ruby nozzles. The droplets have an average diameter of less than 20 microns.

Abstract: Corrosion by water of mild steel pipe is inhibited by the controlled addition of NaHCO.sub.3 to the water (containing calcium ions) in sufficient amounts to induce corrosion and form scale. The scale deposits on the pipe at the corrosion sites form a protective film thereon. The addition of the NaHCO.sub.3 is controlled by the use of corrosion electrode probes placed in the pipe.

Abstract: Oil degradable granules containing particulate breaker chemical is used in fracturing operations to break hydrocarbon liquid gelled with salts of alkyl phosphate esters. The preferred breaker chemical is powdered Ca(OH).sub.2.