Abstract: Insulated electrical cables which are suitable for use in gasoline fuel tanks comprise a stranded conductor which is blocked by a polysulfide and is covered by polyamide insulation.

Abstract: A conductive wire coated with an improved electrical insulation and methods for the preparation of same. The methods involve coating a conductive wire with an insulating material that comprises a curable acrylate-modified aminoamide resin. The insulated conductive wires possess highly desirable properties, including, for example, desirable dielectric strength, heat-resistance, flexibility, mechanical properties and/or uniformity.

Abstract: A cable construction comprising the following components: (i) a plurality of insulated electrical conductors having interstices therebetween, said insulation comprising (a) one or more polyolefins selected from the group consisting of polyethylene, polypropylene, and mixtures thereof, and, blended therewith, (b) a mixture containing one or more alkylhydroxy-phenylalkanoyl hydrazines and one or two functionalized hindered amines; (ii) hydrocarbon cable filler grease within the interstices; and (iii) a sheath surrounding components (i) and (ii) wherein said hindered amines have the following structural formulae in which n is about 2 to about 10: ##STR1##

Abstract: An insulated electrical wire coated with a polyamide-imide insulating material which is a copolymer of anhydrotrimellitic acid, aliphatic and aromatic dicarboxylic acids and a diisocyanate, with a molar ratio of the acids to the diisocyanate of from about 0.9:1.0 to about 1.1:1.0 and optionally further containing from about 1 part wt. to about 30 parts wt. of an epoxy resin per each 100 parts of the copolymer. Optionally the aforementioned insulation can be an interior, first coating, coated by a second coating of a polyamide, polyamide-imide, and when the first coat does not contain an epoxy, then a polyimide.

Abstract: A cable comprising one or more electrical conductors or a core of one or more electrical conductors, each conductor or core being surrounded by a layer of insulation comprising a multimodal copolymer of ethylene and one or more alpha-olefins, each alpha-olefin having 3 to 8 carbon atoms, the copolymer having a broad comonomer distribution as measured by TREF with a value for the percent of copolymer, which elutes out at a temperature of greater than 90 degrees C., of greater than about 5 percent; a WTGR value of less than about 20 percent; a melt index in the range of about 0.1 to about 30 grams per 10 minutes; and a density in the range of 0.880 to 0.950 gram per cubic centimeter, and being prepared by a low pressure process.

Abstract: An insulating material comprised of a benzimidazole-based polymer layer and a fluorine-containing rubber layer. This material is heat-resistant and is especially useful for use in electric wires. To manufacture such wires, a varnish solution is prepared by dissolving partially polymerized benzimidazole-based polymers in a solvent, then adding a polymerization initiator thereto. Subsequently, an electric wire is soaked in the solution and heated to cross-link the benzimidazole-based polymers. By repeating this procedure, the electric wire is coated with any desired thickness of a benzimidazole-based polymer layer. This coated wire is further coated with a fluorine-containing rubber layer to obtain a heat-resistant electric wire that is also resistant to dielectric breakdown.

Abstract: A cable comprising one or more communications media or electrical conductors, or a core of two or more communications media or electrical conductors, each communications medium, electrical conductor, or core being surrounded by at least two layers, an inner insulating layer and an outer jacketing layer, is disclosed. The jacketing layer comprises an in situ blend of two copolymers of ethylene and one or more alpha-olefins having 3 to 12 carbon atoms. The blend has an Mw/Mn ratio in the range of about 8 to about 22; a melt index in the range of about 0.2 to about 3.5 grams per 10 minutes; a melt flow ratio in the range of about 55 to about 135; a molecular weight in the range of about 90,000 to about 250,000; and a density of at least 0.915 gram per cubic centimeter.

Abstract: The present invention describes a new crossslinkable and crosslinked aliphatic polyoxaesters and blends thereof that may be used to produce hydrogels, surgical devices such as sutures, sutures with attached needles, molded devices, and the like. The invention also contemplates a process for producing these polyesters. The crosslinked aliphatic polyoxaesters of the present invention are formed from an aliphatic polyoxaester a first divalent repeating unit of formula I:?O--C(O)--C(R.sub.1) (R.sub.2)--O--(R.sub.3)--O--C(R.sub.1) (R.sub.2)--C(O)--! Iand a second repeating unit selected from the group of formulas consisting of:?--O--R.sub.4 --!.sub.A, II?--O--R.sub.5 --C(O)--!.sub.B, IIIand(?--O--R.sub.5 --C(O)!.sub.P --O--).sub.L G XIand combinations thereof. These aliphatic polyoxaesters may be blended with other polymers which are preferably biocompatible.

Abstract: A grease composition for use as a cable filling material which contains about 25 to 75 parts by weight of castor oil or a ricinoleate polyol, about 13 to 71 parts by weight of a hydroxy-terminated polymer of polymerized castor oil or the reaction product of a polyisocyanate compound and castor oil or a ricinoleate polyol, and about 4 to 12 parts by weight of colloidal particles such as silica, clay or mixtures thereof. Optionally, an antioxidant component can be added to impart high temperature resistance, a bleed inhibitor, typically of a rubber component, can be added to improve bleed resistance, a water blocking agent of a superabsorbent compound can be added to reduce water transmission, microspheres can be added to reduce the weight of the formulation, and/or conventional additives such as fungicides, bacteriocides etc. can be included.

Abstract: Polymer blend for insulating electrical wires comprises a first polymer (polyester) having an inherent L.O.I. not higher than 21% and up to 40% by weight of a polyimide-siloxane (PIS) copolymer. Preferred polyesters are polybutylene terephthalate or polyester-ester block copolymers. Preferred wire constructions have core insulation layer of polyethylene or polyester overlaid with jacket of the polyester/PIS copolymer blend.

Abstract: A method for improving the adhesion of alkylated chlorosulfonated polyethylene (ACSM) and chlorosulfonated polyethylene (CSM) rubber compounds to a resorcinol-formaldehyde latex (RFL) treated polyester reinforcing element using lower than conventional heat set temperatures comprising dipping the element into a RFL dip comprising chlorosulfonated polyethylene; drying the element; heat setting the element at a temperature in the range from about 300.degree. F. to about 425.degree. F. under tension; incorporating the element into the rubber compounds; and curing the element and the rubber compounds. Further, adding an amine functional polyacrylate to the RFL dip prevents failure of the adhesion of the cord at start up temperatures of about -40.degree. F.

Abstract: An offset rubber-blanket sleeve having a support sleeve in the form of a layered body. The layered body is produced from a plastic, preferably rubber, as a base material and the base material is reinforced by layer inserts embedded therein. Additionally, a rubber layer is vulcanized on the support sleeve.

Abstract: A pulsed voltage surge resistant magnet wire comprising a conductor, a continuous and concentric and flexible uniform coat of base insulation material superimposed on the conductor and an essentially continuous and concentric and uniform pulsed voltage surge shield overlaying the coat of base insulation material.

Abstract: The present invention describes aliphatic polyoxaesters containing amines and/or amido groups and blends thereof with other polymers that may be used to produce surgical devices such as sutures, sutures with attached needles, molded devices, and the like. The aliphatic polyoxaesters of the present invention have a first divalent repeating unit of formula I:[O--C(O)--C(R.sub.1)(R.sub.2)--O--(R.sub.3)--O--C(R.sub.1)(R.sub.2)--C(O)-- ]Iand a second repeating unit of the formula:[--O--R.sub.12 --].sub.u, XVIand optionally a third repeating unit with a formula selected from the group consisting of:[--O--R.sub.4 --].sub.A, II[--O--R.sub.5 --C(O)--].sub.B, III([--O--R.sub.5 --C(O)].sub.P --O--).sub.L G XIand combinations thereof wherein R.sub.12 contains an internal amine or internal amide group.

Abstract: A cable, self-extinguishing and releasing low quantities of toxic and corrosive smokes and gases, for optical or electrical applications, comprises a coating (3) including an outer layer (5) consisting of a polymeric mixture including 50 to 80 parts (w/w) of an aromatic polyester of the isophthalic and terephthalic acids, with bisphenol A and 20 to 50 parts (w/w) of a polyether-polyester block elastomer copolymer having a Shore hardness D greater than 50 and a Vicat softening point higher than 170.degree. C., as well as a coaxial inner (4) layer comprising an polyester thermoplastic elastomer including a quantity of aromatic groups such that its Shore hardness D is equal to at least 45 and such that the delamination shear force necessary to separate said layers (4, 5) from one another is equal to at least 2,000 g. after ageing in oil ASTM Nr. 3 for 2 hours at 100.degree. C.

Abstract: Ultraviolet radiation-curable primary and secondary coating compositions for optical fibers are disclosed. The primary coatings comprise a hydrocarbon polyol-based reactively terminated aliphatic urethane oligomer; a hydrocarbon monomer terminated with at least one end group capable of reacting with the terminus of the oligomer; and an optional photoinitiator. The secondary coatings comprise a polyester and/or polyether-based aliphatic urethane reactively terminated oligomer; a hydrocarbonaceous viscosity-adjusting component capable of reacting with the reactive terminus of (I); and an optional photoinitiator. Also disclosed are optical fibers coated with the secondary coating alone or with the primary and secondary coatings of the invention.

Abstract: Disclosed is a fixing roll, comprising a core metal, a heat resistant elastic layer formed to cover the circumferential outer surface of the core metal, and a surface layer formed to cover the circumferential outer surface of the heat resistant elastic layer, the surface layer being formed of a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer resin film of a double layer structure consisting of an inner layer having a volume resistivity of 10.sup.11 .OMEGA..cm or less and an outer layer having a thickness falling within a range of between 3 .mu.m and 50 .mu.m, and the entire thickness of the resin film falling within a range of between 20 .mu.m and 500 .mu.m.

Abstract: There are described a multicomponent compound yarn composed of at least three components, wherein a first component comprises from 40 to 70 percent by volume of thermoplastic fibers, a second component comprises from 10 to 30 percent by volume of polyfluorocarbon fibers, and a third component comprises from 10 to 50 percent by volume of fiber made of a polymer whose melting point is at least 20.degree. C. above the melting point of the fibers of the first component, and processes for producing it. The multicomponent compound yarn described is used for producing the sliding layer of plain bearings or of sliding ring seals.

Abstract: In a V-ribbed belt, cords made of polyester fibers are embedded into an adhesion rubber layer made of chlorosulfonated polyethylene rubber whose polymer ingredient is so compounded that the content of chlorine is 15 to 35 wt. % and the content of sulfur is 0.5 to 2.5 wt. %, thereby reinforcing the adhesion rubber layer. The cords are treated with two kinds of adhesives. A first adhesive for first treatment is an adhesive having at least one of an isocynate compound and an epoxy compound. A second adhesive for second treatment is an adhesive formed of a mixture having at least resorcineformaldehyde resin and 2,3-dichlorobutadiefie-contained polymer. A surfactant is added to the second adhesive so that the cords and the adhesion rubber layer are Securely adhered, thereby enhancing dynamic adhesive strength of the V-ribbed belt.

Abstract: The present invention describes a new aliphatic polyoxaesters that is bioabsorbable and may be used to produce surgical devices such as sutures, sutures with attached needles, molded devices, and the like. The invention also contemplates a process for producing these polyesters. The aliphatic polyoxaesters of the present invention have a first divalent repeating unit of formula I:[O--C(O)--C(R.sub.1)(R.sub.2)--O--(R.sub.3)--O--C(R.sub.1)(R.sub.2)--C(O)-- ]Iand a second repeating unit selected from the group of formulas consisting of:[--O--R.sub.4 --].sub.A, II[--O--R.sub.5 --C(O)--].sub.B, and III([--O--R.sub.5 --C(O)].sub.P --O--).sub.L G XIand combinations thereof.

Abstract: There is disclosed an insulating composition comprising a mixture of a polyolefin, such as polyethylene or polypropylene, and a partially fluorinated copolymer such as ethylene-chlorotrifluoroethylene (ECTFE) or ethylene-trifluoroethylene (ETFE) in an amount from about 3.0% to about 50% by weight polyolefin. Such mixture may be used as either a solid or foamed insulation over a metallic conductor in a plenum-type communications cable. Such an insulation has been found to have improved mechanical and electrical properties over insulations consisting of 100% ECTFE or ETFE. Specifically, the insulation exhibits improved elongation performance and lower dielectric constant and dissipation factor values. These insulated wires may be used in the transmission of electronic signals, such as voice, data or video, and possess unique properties in electrical, fire safety and cost performance.

Abstract: The present invention describes a new aliphatic polyoxaesters and blends thereof that may be used to produce surgical devices such as sutures, sutures with attached needles, molded devices, and the like. The invention also contemplates a process for producing these polyesters. The aliphatic polyoxaesters of the present invention have a first divalent repeating unit of formula I:[O--C(O)--C(R.sub.1)(R.sub.2)--O--(R.sub.3)--O--C(R.sub.1l)(R.sub.2)--C(O)- -] Iand a second repeating unit selected from the group of formulas consisting of:[--O--R.sub.4 --].sub.A, II[--O--R.sub.5 --C(O)--].sub.B, and III([--O--R.sub.5 --C(O)].sub.P --O--).sub.L G XIand combinations thereof. These aliphatic polyoxaesters may be blended with other polymers which are preferably biocompatable.

Abstract: The problems caused by chemical and thermal shrinkage of hard roll covers, are reduced by the inclusion of one or more intermediate compressive layers between the metal roll and the outer cover, or "topstock". A compressive layer has the properties of being rigid enough to allow the cover to be applied to the roll, and compressible enough to buffer and absorb the stresses which occur as the cover is shrinking during processing.In one embodiment, the intermediate compressive layer comprises a three dimensional fabric that is filled preferably with a thermoset resin system which cures at lower temperature than cover. In a second embodiment, the precise amount of shrinkage in the roll can be predetermined to a high enough degree of accuracy so that a depth for the fabric layer can be used to compensate for the amount of shrinkage, thereby eliminating the need for filling. In a third embodiment, the compressive layer is comprised of a wax material.

Abstract: The present invention describes an aliphatic polyoxaamide polymer and blends thereof that may be used to produce surgical devices such as sutures, sutures with attached needles, molded devices, and the like. The aliphatic polyoxaamide of the present invention have a first divalent repeating unit of formula I:[X--C(O)--C(R.sub.1)(R.sub.2)--O--(R.sub.3)--O--C(R.sub.1)(R.sub.2)--C(O)-- ]Iand a second repeating unit selected from the group of formulas consisting of:[--Y--R.sub.17 --].sub.T, I[--O--R.sub.5 --C(O)--].sub.B, and II([--O--R.sub.9 --C(O)].sub.P --O--).sub.L G XIand combinations thereof, wherein X and Y are selected from the group consisting of --O-- and --N(R)--, provided both X and Y are not both --O-- and may be blended with a second polymer that is preferably biocompatable.

Abstract: The conductive roll accordin g to the present invention can be used for develop ing, charging, destaticizing and transferring images of electrophotography as the roll can be tightly contacted against a photosensitive member for uniform charging of the potential. The conductive roll is constructed to minimize contamination of the photosensitive member. The conductive roll includes a highly conductive shaft provided at the core, an intermediate layer provided on the outer peri phery of the shaft and is made of a conductive and elastic material or a foamed member of such material, and a coated film layer provided on the outer periphery of the intermediate layer having a high resistance.

Abstract: Multi-component composites containing a linear polyester of an alkyl glycol and an aromatic diacid as one component, rubber as a second component, and a third component which is a compatibilizing polyester (polystyrene copolymer).

Abstract: Tensioning bundle includes tensioning members running parallel to one another such as stranded wires or single wires. According to the invention the tensioning bundle as a whole is covered with at least one synthetic resin in an extruder. For tensioning such bundles the tensioning members may be tensioned individually or jointly.

Abstract: Organic polymer surfaces are modified by contacting such surfaces with a haloester compound and a cationic compound of having a pK.sub.a >5. Preferably the organic polymer is selected from the group consisting of polyesters, aromatic polyamides, and graphitic polymers and the contacting is conducted at an elevated temperature.

Abstract: A resin-coated, bonding fine wire for use in forming bonded electrical connections on a semiconductor device, wherein the bonding wire comprises an elongated fine wire of electrically conductive material, and first and second non-conductive coating layers. The first non-conductive coating layer covers the elongated fine wire and is of a material having good insulating property and heat resistance. The second non-conducting coating layer covers the first non-conductive coating layer and is of a material having good abrasion resistance. The first non-conductive coating layer includes at least one aromatic polyester resins, and the second non-conductive coating layer includes at least one resin selected from the group consisting of polyurethanes, polyester imides and polyimides. The second non-conductive coating layer is built up from a plurality of successive coats to define the second non-conductive coating layer as a non-conductive multilayer coating structure.

Abstract: A polyethylene for an insulation layer of a power cable, of which the dissipation factor never increases even in a high-temperature, high electric field, and a crosslinked polyethylene insulated power cable which uses this polyethylene so that the high-temperature dielectric breakdown voltage is large enough for high-capacitance transmission. This polyethylene is a low-density polyethylene which is synthesized by high-pressure radical polymerization of ethylene, and has properties including: a melt flow rate of 0.1 to 10 g/10 minutes; a density of 0.915 to 0.935 g/cm.sup.3 ; an absorbance of 0.03 to 1.0 for a ketone-type carbonyl group, having a peak in a position corresponding to a wave-number of 1,725.+-.4 cm.sup.-1 in an infrared absorption spectrum, an absorbance of 1.0 or less for an ester-type carbonyl group, having a peak in a position corresponding to a wave-number of 1,743.+-.4 cm.sup.-1 and absorbances of less than 0.

Abstract: The present invention relates to an insulated wire comprising a conductor and at least two insulating layers provided on the outer periphery of the conductor. The inner insulating layer is provided directly or via another insulation on the outer periphery of the conductor and comprises a polyolefin compound containing 20 to 80 parts by weight of at least one substance selected from ethylene .alpha.-olefin copolymer, ethylene .alpha.-olefin polyene copolymer (.alpha.-olefin having the carbon numbers of C.sub.3 -C.sub.10, polyene being non-conjugated diene).

Abstract: A method for preparing a metal matrix composite (MMC) monotape from a monofilament, is provided. The monofilament is first coated with a primary coating having metal particles uniformly distributed therein to form a primary monofilament. The primary monofilament is then clad with a secondary coating of a resin binder that does not resolvate the primary coating and thus interrupt the distribution of the metal particles therein, to form a doubly coated monofilament. The doubly coated monofilament is then wound in adjacent coils on a mandrel while the secondary coating is still wet so that the coils are bound together by the secondary coating. The end of the monofilament is then cut on the mandrel and secured to a coil adjacent thereto and the so-wound monofilament is then dried on the mandrel. Then the so-wound secondary monofilament is cut across its coils on the mandrel and removed to obtain the resulting MMC monotape.

Abstract: A metal oxide layer is provided around a thermocouple element. The metal oxide layer is formed by preparing a sol, in which particulates of a metal oxide are dispersed, by a sol-gel method, dipping the thermocouple element in this sol, energizing the thermocouple element as a cathode for bonding the precursor particulates of the metal oxide thereto, and heat treating the same. The thermocouple according to the present invention is compact with a thin insulating layer, excellent in flexibility, and provides no gas adsorption source.

Abstract: The invention relates to reinforcing and/or process fibers based on plant fibers, obtainable thereby that plant fibers from which the wood components have been removed by ultrasonic treatment are treated with an aqueous solution of at least one metal compound selected among metal oxides, hydroxides, carbonates, sulfates, thiosulfates, sulfites, silicates or phosphates, subsequently washed and treated with an inorganic or organic binding agent or the fibers which have not been washed are neutralized with a mineral acid or that plant fibers from which the wood components have been removed are treated with an oxidation agent or that non-pretreated plant fibers are treated at 250.degree. to 350.degree. C. with the controlled addition of air so that carbonization of the fibers takes place.

Abstract: A heat-resistant coated electrically conductive wire, comprising an electrically conductive wire coated with an insulating coating. The insulating coating is obtained by forming a coating of a thermoplastic resin containing aromatic rings or complex rings on the electrically conductive wire, and then by subjecting the insulating coating to irradiation with an accelerated ion beam having an energy at least 0.1 MeV, thereby cross-linking the resin.As the thermoplastic resins, polyetherimide, polysulfone, polyamide, polyallylate, polycarbonate, polyphenylene oxide, and the like can be used.

Abstract: An article of manufacture comprising, as a first component, a plurality of electrical conductors, each surrounded by one or more layers of a mixture comprising one or more polyolefins and the reaction product of a compound containing a sterically hindered amine or phenol and a quinone compound, and, as a second component, hydrocarbon cable filler grease within the interstices between said surrounded conductors.

Abstract: An elastic fixing roll having an elastic, compliant body material and release surface material is disclosed. The body material comprises porous silicone rubber, fluorosilicone rubber, or fluorocarbon rubber foam, or a porous synthetic polymer foam reinforced with silicone rubber, fluorosilicone rubber, or fluorocarbon rubber. The release surface material is formed of porous polytetrafluoroethylene film containing silicone rubber, fluorosilicone rubber, or fluorocarbon rubber and is bonded to the body material by a non-continuous layer of adhesive.

Abstract: A fire-resistant plenum-type electrical cable is provided that is insulated with an inner layer of a fluorocarbon containing polymer in contact with a surrounding electrical conductor, and an outer layer of abrasion-resistant polyvinyl chloride surrounding the inner fluorocarbon containing polymer layer. The inner layer of fluorocarbon containing polymer may be foamed.

Abstract: A DC high-voltage wire comprising: a conductor; a resin composition layer coating the conductor, the resin composition layer comprising a polyolefin resin containing carbon black in an amount of not less than 10 parts by weight per 100 parts by weight of the polyolefin resin, having an insulation resistance of not more than 10.sup.10 .OMEGA..cndot.cm; an insulating layer coating the resin composition layer, the insulation layer comprising polyethylene having a softening temperature of not lower than 105.degree. C.; and a fire retardant protective coating layer coating the insulating layer, the fire retardant protective coating layer comprising (1) a terpolymer of ethylene, vinyl acetate and vinyl chloride, and/or a terpolymer of ethylene, methyl methacrylate and vinyl chloride, and (2) a copolymer of chlorinated ethylene and vinyl chloride; the resin composition layer, the insulating layer and the fire retardant protective coating layer each being crosslinked.

Abstract: A high service temperature electrical wiring product comprising a jacketed polyvinyl chloride insulation incorporating a relatively volatile plasticizing system and manufacturing process therefor. The wiring product comprises an electrical conductor and an insulation covering on the conductor having a UL-83 service temperature classification of at least 90.degree. C. The insulation is formed of a primary coating of a polyvinyl chloride resin which contains a relatively volatile plasticizing system for the resin, specifically, one having a vapor pressure at 200.degree. C. of at least 0.3 torr. A jacket surrounding the primary insulation coating is formed of a poly (alkylene terephthalate) having a melt temperature in excess of that of the primary insulation coating.

Abstract: The invention relates to a ribbon or bead for coating by torch spraying and its use For depositing a quasi-crystalline phase on a substrate. The bead or ribbon (1) comprises a core having an organic binder and a powder or a mixture of powders able to Form a quasi-crystalline alloy, said core being surrounded by an organic material sheath. It makes it possible to deposit a quasi-crystalline alloy on a substrate whilst preparing said alloy in the flame (3) of a spraying apparatus and using commercial powders of the constituents of the quasi-crystalline alloy.

Abstract: A method for stabilizing shelf life conductivity of conductive coatings such as polypyrrole or nickel sulfide on a substrate such as fiberglass, by incorporating in such conductive coating a polyphenol or a polysiloxane. The polyphenol is derived from a phenolic material in the form of a phenol-formaldehyde monomer or an oligomer of phenol-formaldehyde, and the polysiloxane is derived from a siloxane. Upon heating, the phenolic material cures to a polyphenol and the siloxane is converted to a polysiloxane, forming the stabilizing material on the conductive polypyrrole or nickel sulfide coated substrate. The phenolic material is preferably incorporated directly into the solution formulation for preparing the conductive nickel sulfide or polypyrrole on the substrate, and the polyphenol stabilizer is formed together with the conductive coating on the substrate by heating.

Abstract: Disclosed herein is a rubber covered roll comprising a metallic core and at least one covering rubber layer. The covering rubber layer is a vulcanized rubber layer formed by a rubber composition comprising an ethylenically unsaturated nitrile-conjugated diene type highly saturated copolymer rubber (A) having a conjugated diene unit content of the polymer chain of at most 25 wt. % and the zinc salt (B) of an ethylenically unsaturated carboxylic acid. A covering rubber layer coming into contact with the metallic core is at least a vulcanized rubber layer formed by a rubber composition comprising 100 parts by weight of a rubber component containing at least 50 wt. % of the highly saturated copolymer rubber (A) and 10-40 parts by weight of the zinc salt (B). A rubber composition for rubber covered rolls is also disclosed. It comprises 100 parts by weight of a rubber component containing 90-50 wt. % of the highly saturated copolymer rubber (A) and 50-10 wt.

Abstract: The present process for producing aromatic polyamide fibers for reinforcement of rubbers lies in that, in the first step, the fibers are dipped in an epoxy treating solution containing aromatic glycidylamines having 2 or more epoxy groups in one molecule and aromatic amines at a specific ratio and dried and cured, and thereafter, in the second step, the fibers are dipped in a treating solution for the second step containing resorcin formaldehyde resins and rubber latices and dried and cured. More preferably, specific chlorophenol compounds are added to the treating solution for the second step.The aromatic polyamide fibers obtained by the process of the present invention provide rubber products excellent in water resistance when they are used for reinforcement of rubbers, and the products have high adhesive strength in initial adhesion and besides, small decrease in adhesive strength even if they are dipped in water for a long time.

Abstract: The present invention relates to an insulated wire comprising a conductor and at least two insulating layers provided on the outer periphery of the conductor. The inner insulating layer is provided directly or via another insulation on the outer periphery of the conductor and comprises a polyolefin compound containing 20 to 80 parts by weight of at least one substance selected from ethylene .alpha.-olefin copolymer, ethylene .alpha.-olefin polyene copolymer (.alpha.-olefin having the carbon numbers of C.sub.3 -C.sub.10, polyene being non-conjugated diene).

Abstract: The present invention provides an improved coextruded medical grade port tubing. The medical grade port tubing provides characteristics that are desirable in the medical industry and therefore can be used as a medical port tubing in, for example, renal therapy or blood donor tubes. To this end, the present invention provides a non-PVC coextruded medical grade port tubing including: an outer layer comprising a blend of polypropylene copolymer and styrene-ethylene-butylene-styrene copolymer; a tie layer; and a core layer including a blend of polyamide and ethylene vinyl acetate.

Abstract: An insulated wire comprising a conductor and an insulating coating made from a polyamideimide base coating, which polyamideimide is made of an acid component and a diisocyanate component containing 10 to 80 % by mole of an aromatic diisocyanate compound of the formula: ##STR1## or which polyamideimide is made of an diisocyanate component and an imidodicarboxylic acid that is a reaction product of an acid component and a diamine component, in which the diamine component contains an aromatic diamine compound of the formula: ##STR2## and/or the diisocyanate component contains the above aromatic diisocyanate compound in such an amount that a total amount of the aromatic diamine compound and the diisocyanate compound is from 10 to 80 % by mole based on the total amount of the whole diamine component and the whole diisocyanate component.

Abstract: A cable (20) which may be used for communications, for example, include transmission media (24-24), each having a plastic composition of matter disposed thereabout. The insulation (26) comprises a polyvinyl chloride composition which includes a lubricant and a lead-free stabilization system. The stabilization system includes a calcium-zinc constituent in combination with an antioxidant-metal deactivator complex which provides a sacrificial function to prevent the formation of calcium or zinc chloride which would affect adversely the electrical properties of the insulated conductor. A jacket (28) typically is disposed about a plurality of the transmission media and comprises a non-lead stabilized plastic composition of matter.

Abstract: The present invention relates to an abrasive article comprising:(a) a flexible substrate having a front side and a back side;(b) at least one layer of abrasive grains bonded to said front side of said substrate by means of a make coat;(c) optionally one or more additional coats selected from the group consisting of a size coat, a supersize coat, a saturant coat, a presize coat, and a backsize coat;wherein at least one of said make, size supersize, saturant, presize, and backsize coats comprises a maleimide binder. The invention also relates to a method of making the abrasive articles.

Abstract: A high voltage insulator has a polymeric core that forms a mechanical strength member and an outer covering of a heat-shrinkable polymeric tube that is electrically insulating and non-tracking and that has sheds on its outer surface.