Abstract: Highly loaded improved closed cell foams comprising a plurality of coalesced strands or profiles of an alkenyl aromatic thermoplastic synthetic resin or mixture of an olefin polymer resin and a copolymer of ethylene with one or more copolymerizable comonomers having a lower melting point than the olefin polymer resin. The loading of the nucleating additive is in a range of about 0.5 to about 50 weight percent, based on total resin weight. When highly loaded with carbon black these foams are electroconductive foams.

Abstract: A filter material is a felt of 60 weight % 2.8 decitex polypropylene fibres and 40 weight % of 3.5 decitex modacrylic fibres.

Abstract: A curable sheet comprising first and second curing reactants arranged in discrete areas of the sheet, preferably by coextrusion, in patterns such as stripes and checks. The sheet cures upon fusion of the respective areas of the curing reactants.

Abstract: A synthetic polymer multifilament yarn capable of being converted to a bulky yarn is composed of a plurality of irregular individual filaments each having at least two belt-shaped filamentary constituents, at least one core filamentary constituent located between the belt-shaped constituents and extending in a sinuous manner and having a thickness varying alternately between thick and thin, and at least two thin middle filamentary constituents located between the core constituent and the belt-shaped constituents to thereby connect those constituents to each other.

Abstract: A conductor wire with an inner layer of insulation of cellular polyolefin compound and an outer layer of polyvinylchloride. The polyvinylchloride includes a material compatible with the polyolefin and which bonds to the polyolefin to bond the layers together. The compatible material may be chlorinated polyethylene. In the insulated structure, the inner layer has a substantially continuous skin which is bonded to the outer layer. In a method of forming the insulation, the inner layer is maintained as a non-cellular structure which the outer layer is extruded onto it. This provides unbroken opposing surfaces of the layers which are bonded together and the integrity of the surface of the inner layer is maintained as the layer is formed into a cellular structure.

Abstract: The present invention provides pile compositions comprising 2% by weight or more of porous expanded fibers with expansion ratio 3% or higher as fibers composing the pile part. This invention enables providing pile compositions which give excellent animal hair like feeling and external appearance; that is, pile part's lightness, bulkiness, soft touch, elasticity, coloring and loosenability.

Abstract: A method of manufacturing containers, the method comprising the steps of (a) extruding an elongate tube of plastics material, the tube having a rectangular outer cross-section and an elongate central cylindrical cavity; (b) cutting the tube transversely into a plurality of container body portions; (c) sealing a base to one end of each body portion; and (d) sealing a top to the other end of each body portion. The invention also provides apparatus for manufacturing containers, comprising an extrusion device for extruding an elongate tube of plastics material, the tube having a rectangular cross-section and an elongate central cylindrical cavity, a cutting device for cutting the tube transversely into a plurality of container body portions, a first sealing means for sealing a base to one end of each body portion and a second sealing means for sealing a top to the other end of each body portion.

Abstract: The invention relates to a process for producing a tubular glass membrane with wall thicknesses between 5 and 30 microns and reproducible pore sizes between 11 A and 50 A. Alkali borosilicate glass is drawn into discrete hollow tubes and immediately cooled. The tubes are thermally treated to effect a phase separation into a coherent silicon dioxide phase and a boron oxide phase rich in alkali borate. The boron oxide phase is leached out with mineral acid. The tubes can be subsequently treated to give enlarged or reduced pores, asymmetric pores and coated surfaces.

Abstract: This invention is a trilobal, synthetic fiber, intended for use in carpets, having an axially extending hole in each lobe, the total cross-sectional area of the fiber being about 5 to 12 percent void, said fiber cross-section having a modification ratio of between about 2 to 3, and an arm angle of about 15.degree. to 45.degree., so that a fiber having improved bulk, soil hiding and resiliency is apparent in a carpet having face fiber of said fiber.

Abstract: There is disclosed a hollow fiber semipermeable membrane element comprising hollow fiber semipermeable membranes having their respective one end portions or both end portions bonded together by means of a vulcanized rubber, so that the semipermeable membrane element has a high resistance to chemicals. The incorporation of a graphite fluoride in the rubber serves to further increase not only the hardness of the bonding rubber portions but also the resistance of the bonding rubber portions to chemicals. Such a semipermeable element can be easily, efficiently produced on a commercial scale.

Abstract: Novel porous fibers and filaments are prepared from normally solid, thermoplastic, orientable, organic polymers which have reactive or reactable groups pendent from the polymer chain, employing a process which involves reactions of said pendent groups while the polymer is in an oriented condition. One of the preferred polymers is a copolymer of ethylene/acrylic acid.

Abstract: An electrically conductive shaped article such as a film or fibrous material and a process for preparing the same from a polybenzimidazole shaped article is provided. The polybenzimidazole article is first contacted with cuprous ions to produce a cuprous ion-impregnated material, and subsequently is subjected to a sulfiding agent capable of sulfiding cuprous ions, and preferably washed, to produce a polybenzimidazole shaped article having covellite copper sulfide in association therewith. Also provided are electrically conductive composites and a process for preparing the same by incorporating fibrous material prepared in accordance with the process within a substantially continuous polymeric matrix.

Abstract: The invention is concerned with a rod shaped constructional element comprising a core of foam material at least one first layer of fibers mounted on said core, said fibers extending in a direction parallel to the axis of said core at least one second layer of fibers mounted on said first layer, said second layer of fibers crossing each other at an angle to said axis; and at least one disc element disposed transversely in said core.

Abstract: A coverlet for conventional, unheated waterbeds which provides effective insulation is disclosed. The coverlet utilizes an insulating layer of fibrous materials, such as hollow polyester fibers, typically quilted together with a layer of flexible, lightweight foam material.

Abstract: A crimped fiber having a plurality of cells and bends characterized by the total area occupied by the cells within a cross-section of the fiber at the bends being less than 50% of the area occupied by the cells within a cross-section of the fiber at other than the bends.

Abstract: A tip member for a coating tool in the form of a stick, wherein the stick is formed of a bundle of resin-treated fibers substantially uniformly stretched in the longitudinal direction of the fibers. One end of the stick is tapered to the tip with the fibers being unraveled to unbind the fibers in that area. One or more longitudinal grooves may be formed in the surface of the stick.

Abstract: The invention provides semi-permeable hollow fibres of symmetrical type and of homogeneous microporous structure, with a smooth internal surface, which are obtained by cooling a solution of a copolymer of acrylonitrile and an olefinically unsaturated comonomer carrying optionally salified sulphonic acid groups, in a polar organic solvent with an adjuvant, to give a thermally reversible gel, followed by washing, stretching and relaxation treatments. The new hollow fibres have improved haemocompatibility and are useful in treating blood by haemodialysis, ultrafiltration and/or plasmapheresis.

Abstract: This invention concerns a heating pipe for panel heaters disclosed on walls, ceilings or floors to heat a room. The pipe is essentially constructed of a pipe itself, an electric heating wire running through it and aluminum granules stuffed between the two. Because of the simple structure, the production, the installment and the maintenance costs are cheap; as a matter of course, there is no additional need of a circulation pump for heating media and safety devices to watch the leak of heating media or the break of the pipe. Moreover, because spherical aluminum granules are closely packed, the heat conductivity is very good, which minimizes the heat loss and reduces the time to heat up a room. Also, the heat capacity is so small that frequency room temperature control by means of an automatic on-and-off mechanism has becomes possible.

Abstract: A highly oriented resin-made reinforcing member that contains a highly oriented resin as the principal component and which has a cross-sectional distribution in the degree of orientation.

Abstract: A fragrant sheath-core composite fiber suitable for bedding and having a cross-section including a sheath and a core including a hollow portion, wherein an aromatic perfume having a boiling point higher than 150.degree. C. under normal pressure is incorporated and dipersed in an amount 0.1 to 10.0% by weight in a thermoplastic polymer constituting the core. The core component is preferably a polyethylene type polymer, and the sheath component is preferably a polyethylene terephthalate polymer. One of typical compositions of the aromatic perfume is an essential oil mixture including (1) 10 to 20% of lemon oil, (2) 5 to 15% of bergamot oil, (3) 2 to 8% of lavender oil, (4) 2 to 8% of lemongrass oil, (5) 2 to 8% of cedarwood oil and (6) 0.5 to 1.5% of jasmine absolute.

Abstract: Disclosed are a multilayer composite hollow fiber comprising at least one nonporous separating membrane layer (A) performing a separating function and two or more porous layers (B) performing a reinforcing function, the layer (A) and the layers (B) being alternately laminated so as to give a structure having internal and external surfaces formed by the porous layers (B), as well as a method of making such a hollow fiber.In this multilayer composite hollow fiber, the separating membrane can be formed as an ultrathin, homogeneous membrane. Moreover, the separating membrane is not liable to get damaged owing to the unique structure of the hollow fiber. Furthermore, such hollow fibers can be readily and stably produced on an industrial scale.

Abstract: A method for production of porous hollow polymer fiber membranes. A homogeneous mixture is prepared from at least two components where one component is a fusible polymer (10 to 30 percent) and a solvent component (70-90%) is inert relative to the polymer and where said components form a binary system having in the liquid state a region of complete miscibility as well as a miscibility gap. The mixture is extruded at a temperature above the phase segregation temperature of the mixture through a hollow fiber nozzle into a spinning tube containing a solvent inert to the polymer and having a temperature below the segregation temperature. Fiber and liquid are moved in the spinning tube in the same direction at about the same speed. After solidification the hollow fiber membrane is washed with a solvent.

Abstract: A porous hollow fiber membrane, comprising a polyolefin hollow fiber membrane of an annular cross section of substantial circle 150 to 300 .mu.m in inside diameter and 10 to 150 .mu.m in wall thickness, said hollow fiber membrane forming on the inner wall side thereof a tight layer of intimately bound fine polyolefin particles and on the outer wall side thereof a porous texture of fine polyolefin particles bound in chains and containing fine pores extended continuously form said inner wall side to said outer wall side.

Abstract: The present invention is directed toward a highly flexible, silicone rubber coated inorganic yarn based sleeving and a process for making the invention comprising an inorganic yarn sleeving, i.e., glass fibers, formed into a sleeving which is then coated with a highly flexible silicone rubber which has a Shore-A durometer reading of about 40 or less of the cured silicone material.

Abstract: The invention relates to a method for connecting reaction sintered silicon carbide parts to iron and other metal parts of importance is that the connection involves the use of a binder comprising a mixture of silicon and a metal and preferrably it is a eutectic mixture.

Abstract: This invention provides a composite hollow fiber comprising a porous hollow fiber substrate and a coating layer formed on at least one of the outer surface and the inner surface of said substrate. The coating layer comprises a polymer having at least one of the structural units represented by the formula (I): ##STR1## wherein R.sup.1 represents a hydrogen atom or a lower alkyl group; R.sup.2, R.sup.3 and R.sup.4, which may be identical or different, represent a hydrogen atom, a monovalent hydrocarbon group having 1 to 8 carbon atoms or a monovalent silicon-containing organic group.This composite hollow fiber is excellent in gas permeability and gas separation performance and has high heat resistance, humidity resistance and mechanical strength.

Abstract: A particulate filter medium is formed of a sintered composite of 0.5 micron diameter quartz fibers and 2 micron diameter stainless steel fibers. A preferred composition is about 40 vol. % quartz and about 60 vol. % stainless steel fibers. The media is sintered at about 1100.degree. C. to bond the stainless steel fibers into a cage network which holds the quartz fibers. High filter efficiency and low flow resistance are provided by the smaller quartz fibers. High strength is provided by the stainless steel fibers. The resulting media has a high efficiency and low pressure drop similar to the standard HEPA media, with tensile strength at least four times greater, and a maximum operating temperature of about 550.degree. C. The invention also includes methods to form the composite media and a HEPA filter utilizing the composite media. The filter media can be used to filter particles in both liquids and gases.

Abstract: A method is provided for producing a membrane from polycarbonate-polyether-blockcopolymers with about 5 to 35 weight percent of repeating alkyleneethercarbonate units and about 95 to 65 weight percent of repeating bisphenol A-carbonate units, wherein the polyethyleneoxide blocks have a molecular weight from about 1,000 to 20,000, wherein the intrinsic viscosity of the copolymer is from about 180 to 300 ml/g as measured in chloroform at 25.degree. C. and wherein the ultrafiltration rate is from about 4 to 200 ml/h.m.sup.2.mm Hg. In a first dissolving step a polycarbonate-polyether-copolymer is homogeneously mixed with a solvent at a temperature from about 80.degree. to 120.degree. C. and in a second dissolving step the temperature is brought to about 140.degree. to 180.degree. C. to produce a true solution. The filtered solution is cooled to from about 20.degree. to 50.degree. C. and is then extruded through a nozzle into a bath comprising a nonsolvent for the polymer for precipitating the polymer.

Abstract: A foamed plastic insulated wire having a foamed plastic material insulation layer formed over a conductor. The plastic material includes at least one component having a swelling ratio greater than 55%, and the component comprises at least 20% by weight of the insulation layer. The insulated wire is produced by adding a blowing agent such as a chemical blowing agent and an inert gas and extruding the mixture over a conductor.

Abstract: Co-vulcanizates which have good mechanical properties, a good resistance to oil, an effective flame resistance and a low smoke gas density are obtained from mixtures of (a) from 95 to 5% by weight of EVA rubber and (b) from 5 to 95% by weight of elastomers which contain nitrile groups and have from 25 to 140 nitrile groups and less than 35 double bonds per 1000 carbon atoms, by radical cross-linking.

Abstract: A hollow fiber suitable for ultrafiltration formed from a microporous polyolefinic composition comprising from 8 to 93 volume percent polyolefin, from 7 to 92 volume percent of filler and from 0 to 10 volume percent of a plasticizer for the polyolefin to provide hollow fiber walls having pores at least 70 percent of which have a diameter of 0.3 micron or less.

Abstract: An antistatic polyester fabric having a water repellency, which comprises a woven or knitted fabric comprising a fiber of a modified polyester composed mainly of a polyester and blended with an antistatic agent, at least the surface of which is covered with a fluorine type water and oil-repellency agent.

Abstract: An improved process for sintering extruded powder shapes comprising drying or calcining an extruded shape in a microwave furnace and rapid sintering the shape in a plasma fired furnace. Alternatively, calcining or drying may take place within a furnace heated by the plasma furnace's exhaust. The process of the invention is especially useful for silicon carbide extruded materials and for tubular shapes. This process significantly reduces sintering times and costs. Use of the process yields a high strength sintered product.

Abstract: A heterogeneous membrane of a thermoplastic crystalline polymer composed of a microporous layer and a nonporous layer and having excellent properties, for example as a diaphragm for separating a gaseous mixture; and a process for production thereof. The heterogeneous membrane is in the form of, for example, a flat film or a tubular film (preferably a hollow fiber). The microporous layer contains pores with a diameter of 0.01 to 50 microns, whereas the nonporous layer does not substantially contain pores having a diameter of at least 30 .ANG. and has a thickness of 0.01 to 1 micron. The heterogeneous membrane is characterized by having at least 3 times as high an apparent oxygen permeability coefficient P(O.sub.2) at 25.degree. C. as a nonporous homogeneous membrane of the same material and an oxygen-nitrogen separation coefficient .alpha. (O.sub.2 /N.sub.2) at 25.degree. C., i.e. the ratio of the apparent oxygen permeability coefficient P(O.sub.2) to the apparent nitrogen permeability coefficient P(N.sub.

Abstract: This invention concerns an essentially cylindrical discrete carbon fibril characterized by a substantially constant diameter between about 3.5 and about 70 nanometers, e.g. between about 7 and 25 nanometers, length greater than about 10.sup.2 times the diameter, an outer region of multiple essentially continuous layers of ordered carbon atoms and a distinct inner core region, each of the layers and core disposed substantially concentrically about the cylindrical axis of the fibril. Preferably the entire fibril is substantially free of thermal carbon overcoat. The invention further concerns a plurality of such fibrils.The fibril or plurality of fibrils of this invention may be produced by contacting for an appropriate period of time and at suitable pressure a suitable metal-containing particle with a suitable gaseous, carbon-containing compound, at a temperature between about 850.degree. C. and 1200.degree. C.

Abstract: A polymeric fibrous sheet is provided in the form of a composite of an open matrix of coarse fibers extending throughout the sheet and integrated with cocrystallized, fine fibers spanning the open spaces within the matrix. This non-woven sheet is formed by applying a thin film of polymer solution to the top surface of a substrate undergoing agitation. The substrate can be continuous, such as a belt, agitated by applying oscillatory motion from an acoustic or pneumatic driver to the shafts carrying the cylindrical rollers for the belt. The agitation is at a level sufficient to develop a reciprocating flow field with a velocity gradient sufficient to uncoil and orient the polymer chains in solution and induce the growth of fibers. As the agitated solution cools, a sheet is formed as linear polymer chains crystallize. Residual solvent is removed and the sheet is then dried in the dryer.

Abstract: A fabric formed from fiber-like strands of hollow, transparent filaments which have been woven or otherwise joined together is disclosed. The hollow strands contain a liquid in which color-coded micromagnets are dispersed. The micromagnets are free to rotate within the filament, the fabric thereby being capable of changing colors, either selectively or totally, when an activating magnetic force causes the micromagnets therein to rotate. The fabric may incorporate, in place of color-coded micromagnets, other orientable bodies which are also capable of being oriented, as for example by an electromagnetic or electrostatic force field, to produce a visual display. Further, the fabric may comprise a material having one or more liquid filled veins, the liquid again containing color-coded micromagnets or orientable bodies dispersed therein.

Abstract: In a porous hollow fiber having a large number of micropores in its surrounding wall, the improvement in which walls of said pores are coated with ethylene oxide-grafted nylon, such as ethylene oxide-grafted nylon 6.

Abstract: An interlining material having reinforcing filaments aligned parallel to one another and having an anisotropic stiffening action. They are characterized by a melting point of more than 180.degree. C. and are applied to a substrate surface melting at temperatures below 150.degree. C. Also described is a method of production whose steps are coordinated with the melting behavior of the substrate surface and reinforcing filaments.

Abstract: The invention relates to a plastics granular material of foamable particles which are derived from a star-shaped basic body with at least three limbs lying in a plane, the particles having at least one orifice. Preferably, these granular material particles are provided with three limbs and each limb is provided with an orifice.Furthermore, the invention has as its subject a packaging material which is obtained by foaming of the said plastics granular material. This packaging material displays a lower bulk density, improved pourability with simultaneously improved packing effect (good packaging properties, large void volume).

Abstract: A cellulosic particle, especially useful as a cat litter, is manufactured by agglomerating a fibrous cellulosic feed material in the presence of water, compacting the surface of the agglomerated particles, and drying the particles.

Abstract: A low rate resilient bushing suitable for automobiles and other vehicles is disclosed where in the bushing, the carbon black reinforced rubber compound has been conventionally sulfur cured using an activator system of zinc oxide and certain soluble fatty acid materials.

Abstract: A porous regenerated cellulose hollow fiber obtained by a micro-phase-separation method is described. The hollow fiber is characterized in that the viscosity average molecular weight is at least 5.times.10.sup.4, each of the average pore diameter D.sub.1 on the inner wall surface of the hollow fiber and the average pore diameter D.sub.2 on the outer wall surface is 0.02 to 10 .mu.m, the in-plane porosity Pr on the outer wall surface is at least 10%, and the hollow fiber comprises a wall thickness portion having pores piercing therethrough between the inner wall surface and outer wall surface and a hollow portion extending continuously over the entire fiber length.

Abstract: The invention relates to plastics granules composed of foamable particles derived from a star-shaped fundamental solid having at least three sides, these particles being a three-dimensionally domed structure by virtue of the sides having paraboloidal curvature, and the surfaces of paraboloidal curvature being staggered in relation to one another. These granule particles preferably have three sides and at least one gap.The invention also relates to a packaging material obtained by foaming the said plastics granules. This packaging material exhibits an improved flow while having at the same time an improved packaging action (good packaging properties and a high void volume).

Abstract: A process for the addition of pendant groups to polyarylenes comprises the steps of charging a reaction vessel with a solution of a polyarylene and a Friedel-Crafts catalysts; said polyarylene having the formula ##STR1## adding to the reaction vessel a pendant forming group G, wherein G is selected from the group consisting of sulfonyl halides, sulfonamide halides, alkylhalides, acylhalides and phosphorus acid halides; heating the contents of the reaction vessel to form a substituted polyarylene having the formula ##STR2## and thereafter recovering the substituted polyarylene. The substituted polyarylenes are novel and have utility as a semipermeable membrane and a process for the separation of gases therewith is also provided.

Abstract: A hollow fiber membrane of a cellulose ester for dialysis which has a membrane thickness of less than 20.mu., and a yield strength S.sub.b (g/filament) after heat-treatment at 80.degree. C. for 20 hours satisfying the following formula (I):0.90.ltoreq.S.sub.b /S.sub.a .ltoreq.1.10 (I)wherein S.sub.a represents the yield strength (g/filament) of the hollow fiber membrane which is measured before heat treatment, which is suitable for dialysis of body liquids, particularly for dialysis of blood, because it has excellent dialysis performance while keeping excellent storage stability and excellent UFR retention during storage and during the hemodialysis.

Abstract: A method of producing rocket combustors wherein in forming an outer cylin by a powder metallurgical method on the outer side of a cylinder provided on its outer periphery with a cooling wall of channel construction having a plurality of grooves (14), an Ni electroforming layer is formed on the outer side of the outer cylinder, and also a method of producing rocket combustors wherein an outer cylinder is of multilayer construction having two or more layers.

Abstract: The disclosure relates to a fishing rod formed from one or more lengths of rod material each length of which has a polygonal cross-section such as a hexagon or pentagon. Each length is formed from a number of triangular section elements having a base part of a fibre reinforced plastics and an apex part of a rigid plastics foam. The triangular section elements are bonded together with the base parts forming the outer wall of the section and the apex parts forming an inner core to resist collapse of the section when it is heavily bowed.

Abstract: The disclosure is of paper machine clothing which includes a means of chemically treating the fabric of the clothing.

Abstract: Sportswear suitable for a cold environment. Though light-weight and without undue bulk, the garment is adapted to keep the wearer warm, dry and comfortable. It is fabricated of a composite fabric that includes a vapor-permeable laminate formed by a core layer of hollow fibers acting as a thermal blanket sandwiched between inner and outer skins. Both faces of the inner skin and the inside face of the outer skin are metallized to render them reflective, whereas the outside face of the outer skin is blackened to render it absorbent of solar energy. When the garment is worn, radiant heat from the body is returned thereto by the reflective outside face of the inner skin while convection heat from the wearer's body passes by conduction through the inner skin of the laminate to be absorbed by the core layer. At the same time, solar heat absorbed by the blackened face is conducted through the outer skin to be absorbed by the core layer.