Patent application number | Description | Published |
20080230251 | CROSSLINKED AUTOMOTIVE WIRE HAVING IMPROVED SURFACE SMOOTHNESS - The present invention is a crosslinked automotive wire comprising a metal conductor, a flame retardant insulation layer surrounding the metal conductor, and optionally, a wire jacket surrounding the insulation layer. The automotive wire passes the specifications of one or more several automotive cable testing protocols: (a) SAE J-1128, (b) ISO-6722, (c) LV 112, (d) Chrysler MS-8288, and (e) Renault 36-36-05-009/-L. In particular, the flame retardant insulation layer is prepared from a crosslinkable thermoplastic polymer and a metal carbonate. The flame retardant composition for making the insulation layer demonstrates economic and processing improvements over conventional solutions. The present invention is also a method for preparing a low tension primary automotive wire and the automotive wire made therefrom. | 09-25-2008 |
20080251273 | Plenum Cable Flame Retardant Layer/Component with Excellent Aging Properties - The present invention is a plenum cable component with excellent fire retardant and aging properties. The plenum cable component is prepared from a polyolefin-based composition, containing an olefinic polymer and a surface treated metal hydroxide. Depending upon the surface treatment, the composition may comprise other components. The present invention is also a method for selecting a composition for preparing the plenum cable component as a separator and a method for preparing a communications cable therefrom. | 10-16-2008 |
20090069469 | Nitroxide Compounds for Minimizing Scorch in Crosslinkable Compositions - Scorch is inhibited during the free-radical crosslinking of a crosslinkable polymer, e.g., an EPDM, by incorporating into the polymer before melt processing and crosslinking a scorch inhibiting amount of a derivative, preferably an ether, ester or urethane derivative, of a TEMPO compound, e.g., 4-hydroxy-tetrahydrocarbylpiperidin-1-oxyl. The scorch inhibitors of this invention perform as well, if not better, than their 4-hydroxy-tetrahydrocarbylpiperidin-1-oxyl counterparts in similar polymer compositions and under similar conditions in terms of scorch inhibition and ultimate degree of crosslinking, but exhibit less volatility and less migration within the polymer composition. | 03-12-2009 |
20090131568 | HALOGEN-FREE, FLAME-RETARDANT WIRE-AND-CABLE COMPOSITION AND RELATED ARTICLES - This invention relates to a flame-retardant composition useful for preparing a coated automotive wire with high scrape abrasion resistance and flexibility. The present invention is a halogen-free, flame-retardant composition made from or containing an ethylene/alpha-olefin copolymer, a halogen-free inorganic flame retardant, a coupling agent for coupling the inorganic flame retardant to the copolymer, and a processing aid. | 05-21-2009 |
20090264584 | SILANE MOISTURE CURED HEAT RESISTANT FIBERS MADE FROM POLYOLEFIN ELASTOMERS - An improved process for crosslinking a polyolefin polymer is described. The process involves grafting a silane material onto the polyolefin based polymer in the presence of a free radical generating initiator material and then hydrolyzing the silane material to form crosslinks. By using an effective molar ratio of silane material to free radical of 40 or greater in the grafting reaction, premature crosslinking is controlled and the grafted polymer can be shaped first and then crosslinked. In another aspect of the invention, the crosslinking process is improved by adding a catalyst for the hydrolysis catalyst to the surface of a shaped article made from the grafted polymer. Grafted polymer and articles made from the grafted polymer, particularly fibers, are also disclosed. | 10-22-2009 |
20100027948 | Cable Comprising a Shear Thickening Composition - Shear thickening compositions can function in an energy or communications transmission cable to provide enhanced protection against externally applied forces, e.g., cutting or puncture from a shovel. As a free or bound layer, or when used via impregnation into a substrate used for an internal component or wrap, the shear thickening composition provides protection against mechanical damage that far surpasses conventional technologies. In foamable compositions for cable components, the shear thickening composition provides enhanced integrity of the polymer melt for enhanced foam performance. As a flame retardant component, the shear thickening composition provides an enhanced char formation mechanism for superior flame retardance. | 02-04-2010 |
20100087579 | Magnesium Hydroxide-Based Flame Retardant Compositions Made Via In-Situ Hydration of Polymer Compounds Comprising Magnesium Oxide - Magnesium oxide (MgO) compounded into a polymer can subsequently be hydrated in-situ within the polymer to form magnesium hydroxide. In the case of silane-based or peroxide-based crosslinkable resins, the MgO hydration and polymer crosslinking can be done in a single process step, or in sequential steps. In the case of non-crosslinkable compounds, hydration can be carried out after compounding (no crosslinking step). In all cases, steam CV, sauna, or hot water bath are options for hydration. This approach enables preparation of polymer compounds that are flame retarded with metal hydrates yet free of the traditional limitations posed by shelf instability, extrusion scorch, undesired dehydration, and processing temperature limitations posed by metal hydrates. | 04-08-2010 |
20100101822 | Stress/Thermal Cracking Resistant Cable Sheath Material - A composition useful as a wire or cable insulation or sheathing layer, the composition comprising (i) an inorganic flame retardant, e.g., aluminum trihydroxide (ATH), (ii) ethylene ethyl acetate (EEA) or ethylene butyl acrylate (EBA), (iii) a homogeneous polyethylene, (iv) an ethylenic resin modified with an organo-functional group, e.g., maleic anhydride (MAH) grafted polyethylene, (v) a silicone polymer, and optionally, (vi) a smoke suppressant. The insulation or sheathing layer comprising the composition of this invention exhibits good resistance to stress and/or thermal cracking. | 04-29-2010 |
20100159206 | Method for the Delivery of a Multi-Component Reactive System to a Molding Operation - Tapes comprising (A) a first ribbon comprising (1)(a) a polyolefin containing at least one silane functionality, and (1)(b) a hydroxy-terminated silicone polymer, or (2) a blend of a vinyl silane, polyolefin, organic initiator, e.g., peroxide, and a hydroxy-terminated silicone polymer, and (B) a second ribbon comprising a catalyst masterbatch, the second ribbon carried on the first ribbon, allow for the delivery of a consistent mixture of resin and catalyst to an injection molding machine. | 06-24-2010 |
20100209705 | Moisture-Curable Compositions, and a Process for Making the Compositions - Compositions useful as coatings for automobile power cables comprise a combination of raoisiure-crosslinkabk, si lane-grafted ethylene polymers in combination with a non-halogenated flame retardant. The ethylene polymers are a combination of at least one ethylene polymer with a density of 0.910 g/cc or greater and at least one ethylene polymer with a density less than 0.910 g/cc. The non-halogenated flame retardant is typically liydrated metallic filler, e.g., aluminum trihydrate. These compositions meet SAE J-1128 and DaimlerChrysler MS-8288 specifications, exhibit good shelf-life stability, and are useful in other automotive cable applications, such as ISO-6722. | 08-19-2010 |
20100282490 | Composition with Enhanced Heat Resistance Property - Compositions including a polymer, a primary antioxidant, a secondary antioxidant, and a metal deactivator selected from at least one of 2,2′-oxamido bis[ethyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] and oxalyl bis(benzylidenehydrazide), are disclosed. The compositions can also include a light stabilizer. The compositions can be used to manufacture insulations for wire and cable. The compositions have improved long-term heat aging and also retain their color when exposed to heat. A method of making an insulation for a conductor, such as a wire or a cable, made from a composition is also provided. | 11-11-2010 |
20100297374 | In Situ Moisture Generation and Use of Polyfunctional Alcohols for Crosslinking of Silane-Functionalized Resins - Polymer compositions comprise a (i) silane-functionalized polymer, e.g., a polyethylene grafted with vinyl triethoxy silane, (H) polyfunctional alcohol e.g., α,α,α′,α′˜tetramethyl-I,3-benzenediethanol and, optionally, (iii) acid, e.g., an alkylated aryl disulfonic acid. The use of polyfunctional alcohols in the absence of a strong acid yields a light-crosslinking of the silane-functionalized polymer and this, in turn, provides a polymer melt with improved extensional properties such as elongational viscosity and melt strength. The use of a polyfunctional alcohol in combination with a blocked strong acid provides a slow rate of crosslinking during melt processing and a high degree of ultimate crosslinking after the polymer composition has been shaped or molded. | 11-25-2010 |
20110021711 | CROSSLINKED POLYMER PARTICLES - The present invention is crosslinked polymer particles, prepared from a free-radical activated reaction of an unsaturated coagent and low molecular weight hydrocarbons or certain polymers. This invention allows particles to be made from mixtures of coagents and saturated compounds. The invention is also a process for preparing crosslinked polymer particles. | 01-27-2011 |
20110094772 | METHOD FOR PRODUCING WATER TREE-RESISTANT, TRXLPE-TYPE CABLE SHEATH - TRXLPE-type cable sheaths are prepared by a method in which a solid polymer is mixed with a liquid water tree-resistant agent either by dosing or direct injection. In the dosing method, the solid polymer, e.g., high pressure LDPE, is sprayed or otherwise contacted with the liquid agent, e.g., PEG, the agent is allowed to absorb into the polymer, and the polymer with absorbed agent is then fed to an extrusion apparatus for extrusion over a sheathed or unsheathed wire or optic fiber. In the direct injection method, the solid polymer is first fed to an extrusion apparatus, and the liquid agent is sprayed or otherwise contacted with the polymer before the two are blended with one another through the action of the mixing elements of the apparatus. | 04-28-2011 |
20110112250 | MOISTURE CROSSLINKABLE POLYETHYLENE COMPOSITION - The present invention is a moisture crosslinkable composition. It may be (i) a blend of a nonpolar polyolefin and a second highly polar or amorphous polyolefin or (ii) a copolymer of a nonpolar polyolefin and the second polar or amorphous polyolefin. The present invention is useful for the preparation of moisture-cured wires, cables, film, pipe, hot melt adhesives, and other extruded or injection molded articles. The present invention is also useful in the preparation of media for fast transport of selective species, including film membranes. | 05-12-2011 |
20110136979 | Silicone-Thermoplastic Polymer Reactive Blends and Copolymer Products - Silicone-thermoplastic polymer reactive blends and copolymer products are prepared using economical post-reactor reactive mixing, e.g., extrusion. The procedure is based on the ring-opening polymerization of cyclic siloxanes within a thermoplastic polymer matrix. In a preferred mode, the thermoplastic polymer is a polyolefin, optionally containing silane groups that are available for reaction with the silicone polymer that is formed in situ. The resulting materials provide hybrid performance that can extend the range of applications beyond those which are served by thermoplastic polymers or silicones alone, or their physical blends. | 06-09-2011 |
20110147041 | Medium Voltage Cable Insulation - Compositions comprising:
| 06-23-2011 |
20110147639 | Reactively Processed, High Heat Resistant Composition of Polypropylene and an Olefinic Interpolymer - A propylene polymer is coupled with an olefinic interpolymer by a process comprising contacting under reactive processing conditions at least: A. 10 wt % of at least one propylene polymer; B. 10 wt % of at least one olefinic interpolymer; C. 35 wt % of at least one metal hydrate; and D. A coupling amount of a coupling agent, each weight percent based on the combined weight of the propylene polymer, olefinic interpolymer and metal hydrate. Wire and cable insulation sheaths made from compositions comprising the coupled polymer exhibit desirable heat resistance. | 06-23-2011 |
20110188202 | Algae Oil Based Dielectric Fluid for Electrical Components - The disclosure is directed to a dielectric fluid. The dielectric fluid includes an algae oil. The algae oil includes a natural algae antioxidant. The natural algae antioxidant is selected from β-carotene, astaxanthin, tocopherol, polyunsaturated triglycerides, and combinations thereof. | 08-04-2011 |
20120065307 | Color-Stable, Halogen-Free Flame Retardant Compositions - Color-stable, halogen-free, flame retardant composition comprise, based on the weight of the composition: A. 10-95 weight percent of a thermoplastic polyurethane polymer; B. 3-50 weight percent of a phosphorus-based flame retardant; and 0.1-10 weight percent of a low molecular weight epoxide additive other than a novolak polymer or an olefin-based polymer comprising an epoxy group. | 03-15-2012 |
20120171496 | Flexible, Molded or Extruded Articles and Semiconductive Compounds for Their Manufacture - A molded or extruded article, e.g., an electrical part or shielded cable, comprises at least one insulation layer and at least one semiconductive layer, the semiconductive layer thick and comprising in weight percent: A. 1 to 30 wt % of conductive filler; B. 10 to 90 wt % of a non-olefin elastomer; C. 10 to 90 wt % of an olefin elastomer; and D. Optionally, 0.5 to 2.5 wt % of peroxide. Carbon black and/or metal particulates or powder typically comprise the filler, silicone or urethane rubber the non-olefin elastomer, and EPR or EPDM the olefin elastomer. | 07-05-2012 |
20120172510 | MOISTURE CROSSLINKABLE POLYETHYLENE COMPOSITION - The present invention is a moisture crosslinkable composition. It may be (i) a blend of a nonpolar polyolefin and a second highly polar or amorphous polyolefin or (ii) a copolymer of a nonpolar polyolefin and the second polar or amorphous polyolefin. The present invention is useful for the preparation of moisture-cured wires, cables, film, pipe, hot melt adhesives, and other extruded or injection molded articles. The present invention is also useful in the preparation of media for fast transport of selective species, including film membranes. | 07-05-2012 |
20120178867 | Process for Producing Crosslinked, Melt-Shaped Articles - Crosslinked, melt-shaped articles are manufactured by a process that does not require the use of post-shaping external heat or moisture, the process comprising the steps of: A. Forming a crosslinkable mixture of a 1. Organopolysiloxane containing one or more functional end groups; and 2. Silane-grafted or silane-copolymerized polyolefin; and B. Melt-shaping and partially crosslinking the mixture; and C. Cooling and continuing crosslinking the melt-shaped article. Crosslinking is promoted by the addition of a catalyst to the mixture before or during melt-shaping or to the melt-shaped article. | 07-12-2012 |
20120178868 | Crosslinked, Melt-Shapped Articles and Compositions for Producing Same - Disclosed is a crosslinkable mixture comprising a polyolefin, an alkoxysilane, an organopolysiloxane, a free radical initiator and a liquid polymer modifier. The organopolysiloxane contains two or more hydroxyl end groups. When the crosslinkable mixture is melt-shaped, a unique crosslinked composition is formed. The liquid polymer modifier improves flexibility of the melt-shaped article without decreasing dielectric strength. | 07-12-2012 |
20120238664 | Thermoplastic Polymer Blends Comprising Crosslinked Polar Olefin Polymers in a Thermoplastic Polyurethane Matrix - Polymer blends comprising a first phase comprising a thermoplastic polyurethane matrix and a second phase comprising a crosslinked polar olefin polymer are provided. The first phase is a continuous phase and the second phase can be co-continuous with the first phase, or dispersed as a non-continuous phase in the first phase. The first phase further comprises a metal hydroxide flame retardant and an organic flame retardant. The second phase further includes a metal hydroxide which is coupled to the olefin polymer via a silane coupling agent. | 09-20-2012 |
20120243842 | Plastic Optical Fiber Comprising Cyclic Block Copolymer - Plastic optical fibers or plastic optical fiber cores with good high temperature resistance to optical attenuation loss are prepared from a cyclic block copolymer characterized by a: A. Weight ratio of hydrogenated conjugated diene polymer block to hydrogenated vinyl aromatic polymer block of 35:65 to 10:90; B. Number average molecular weight (Mn) of from 40,000 to 150,000, grams per mole (g/mol); and C. Hydrogenation level such that each hydrogenated vinyl aromatic polymer block and each hydrogenated conjugated diene polymer block has a hydrogenation level of at least 95 percent. | 09-27-2012 |
20130068498 | Thiobis Phenolic Antioxidant/Polyethylene Glycol Blends - Thiobis phenolic antioxidants are efficiently dry or melt blended with a tree-resistant, crosslinkable polyethylene by first forming a blend, preferably a dry blend, of the antioxidant with a polyalkylene glycol (PAG), and then mixing the blend with the polyethylene. The incorporation of thiobis phenolic antioxidant and PAG blend into polyethylene provides the PE with high oxidative induction time (OIT) which is a measure of the oxidative stability of the PE. | 03-21-2013 |
20130174416 | Method for Manufacturing Flexible Multilayer Electrical Articles with Improved Layer Adhesion - A process for manufacturing a multilayer article, the article comprising two crosslinked semiconductive layers separated by and bonded to an insulation layer, the semiconductive layers formed from a peroxide-crosslinkable olefin elastomer and the insulation layer comprising composition comprising a silane-grafted olefinic elastomer, the process comprises the steps of: (A) injecting the silane-grafted olefinic elastomer between the two crosslinked semiconductive layers so as to have direct contact with each semiconductive layer, and (B) crosslinking the silane-grafted olefinic elastomer in the absence of a peroxide catalyst. | 07-11-2013 |
20130175070 | Coated Conductor with Voltage Stabilized Inner Layer - Disclosed are polymeric compositions with improved breakdown strength. The polymeric compositions contain a polyolefin and a voltage stabilizing agent. The voltage stabilizing agent contains a triazine. The triazine may include a substituent that enables keto-enol tautomerism, which provides the voltage stabilizing agent with additional energy dissipation capacity. The present polymeric compositions exhibit improved breakdown strength when applied as an insulating layer for power cable. | 07-11-2013 |
20130177282 | Flexible Strength Members for Wire Cables - This invention relates to a fiber reinforced plastic material with improved flexibility and high tensile strength for use in optic cables. The strength member composition comprises a polypropylene based thermoplastic resin, a continuous fiber having a modulus greater than 80 PGa, and talc. | 07-11-2013 |
20130206450 | PLASTICIZER SYSTEM WITH IMPROVED ELECTRICAL PROPERTIES - The disclosure is directed to a plasticizer system with improved electrical properties. The plasticizer system includes (a) a primary plasticizer consisting of an epoxidized vegetable oil and (b) a secondary plasticizer consisting of an epoxidized fatty acid ester, where the primary plasticizer is present in an amount greater than 50% by weight of the total plasticizer system weight. | 08-15-2013 |
20130273369 | Method of Making a Cable Strength Member - Strength members for cable, particularly fiber optic cable, are made by a method comprising the steps of: A. Wetting a fiber, e.g., fiberglass fiber, with an aqueous polymeric dispersion to form a wetted fiber, the dispersion comprising: 1. At least one thermoplastic resin, e.g., a polyolefin; 2. At least one dispersing agent, e.g., a ethylene ethyl acrylate polymer; and 3. Water; B. Removing the water from the wetted fiber, and C. Consolidating the resin on the fiber with or without curing. | 10-17-2013 |
20140134436 | Thiobis Phenolic Antioxidant/Polyethylene Glycol Blends - Thiobis phenolic antioxidants are efficiently dry or melt blended with a tree-resistant, crosslinkable polyethylene by first forming a blend, preferably a dry blend, of the antioxidant with a polyalkylene glycol (PAG), and then mixing the blend with the polyethylene. The incorporation of thiobis phenolic antioxidant and PAG blend into polyethylene provides the PE with high oxidative induction time (OIT) which is a measure of the oxidative stability of the PE. | 05-15-2014 |
20140182882 | Thiobis Phenolic Antioxidant/Polyethylene Glycol Blends - Thiobis phenolic antioxidants are efficiently dry or melt blended with a tree-resistant, crosslinkable polyethylene by first forming a blend, preferably a dry blend, of the antioxidant with a polyalkylene glycol (PAG), and then mixing the blend with the polyethylene. The incorporation of thiobis phenolic antioxidant and PAG blend into polyethylene provides the PE with high oxidative induction time (OIT) which is a measure of the oxidative stability of the PE. | 07-03-2014 |
20140193628 | Crosslinked, Melt-Shaped Articles and Compositions for Producing Same - Disclosed is a crosslinkable mixture comprising a polyolefin, an alkoxysilane, an organopolysiloxane, a free radical initiator and a liquid polymer modifier. The organopolysiloxane contains two or more hydroxyl end groups. When the crosslinkable mixture is melt-shaped, a unique crosslinked composition is formed. The liquid polymer modifier improves flexibility of the melt-shaped article without decreasing dielectric strength. | 07-10-2014 |
20140329091 | COMPOSITIONS AND METHODS FOR MAKING CROSS-LINKED POLYOLEFINS - Interpolymer blends or terpolymers comprising ethylene monomer residues, residues of comonomers having carboxylic acid and/or carboxylic acid anhydride functionality, and residues of comonomers having epoxide functionality. Such interpolymer blends or terpolymers are cross-linkable materials suitable for use in cable polymeric coating applications and require little or no degassing after cross-linking. | 11-06-2014 |
20140343201 | Plasticizer for Low Temperature Unwind with Weight Retention During Heat Aging - The present disclosure is directed to a plasticizer, polymeric compositions containing the plasticizer, and conductors coated with the polymeric composition. The plasticizer includes (i) an epoxidized fatty acid methyl ester, (ii) an epoxidized natural oil, and (iii) an epoxidized tallate ester. Polymeric compositions containing a polymeric resin and the plasticizer exhibit a weight loss less than 50 mg/cm | 11-20-2014 |
20150028518 | Process for Producing Crosslinked, Melt-Shaped Articles - Crosslinked, melt-shaped articles are manufactured by a process that does not require the use of post-shaping external heat or moisture, the process comprising the steps of:
| 01-29-2015 |