Union Carbide Chemicals & Plastics Technology Corporation

Dow Global Technolgoies LLC

Union Carbide Corporation

Geoffrey David Brown

Michael J Keogh

Jeffrey Morris Cogen

Manish K Mundra

Robert F Eaton

Scott Hanley Wasserman

Scott L Wallace

Yabin Sun

Bin Li

Tong Wu

Lin Fu

Ashish Batra

Li Fan

Xiangyang Tai

Given Jing Chen

Lisa S Madenjian

Journey Lu Zhu

Yongyong Yang

Benjamin R Rozenblat

Anteneh Z Worku

Shana P Bunker

Yurong Cao

Sari B Samuels

Kawai Peter Pang

Xiang Yang Tai

Paul D Whaley

Liqiang Fan

Jing Given Chen

Marie L Hare

Sundaresan Ramachandran

Michael John Keough

Sandra Maki

Vicky Yafen He

Alan R Whetten

David John Frankowski

Kawai P Pang

Jing J Chen

Kurt A Iii Bolz

Given Chen

Jinder Jow

Li Qiang Fan

A die assembly () for extruding a polymeric coating onto a wire so as to impart a matte finish to the coating surface is provided. The die assembly () comprises: A) a die tip () comprising a tubular channel () through which a wire can pass, the channel () positioned along the central longitudinal axis () of the die assembly (); B) a die body () comprising a trunk () and a head (), the head () comprising a tubular channel (), the head tubular channel () comprising a die land (), the trunk () positioned about the die tip () so as to define an annular space () between the exterior surface () of the die tip () and the interior surface () of the trunk (); C) a die holder () positioned about and in contact with the exterior surface () of the trunk (); and D) a radiator () positioned about and in contact with the exterior surface () of the die land () of the die head ().

Die assembly with cooled die land

The present invention is a flame-retardant polyolefin/thermoplastic polyurethane formulation made from or containing a polyolefin, a thermoplastic polyurethane, and an intumescent, polyphosphate flame retardant composition. The invented system achieves elongations &#x3e;400% and tensile strengths &#x3e;1500 psi while the same polyolefin only achieved 100% elongation and &#x3c;1000 psi tensile strength. Also, the present invention shows improved tape extrusion performance versus a comparable TPU only composition, indicating improved melt rheology/fabrication capability for extrusion applications.

Flame-retardant polyolefin/thermoplastic polyurethane composition

Disclosed is a halogen-free, flame retardant thermoplastic resin composition based on polypropylene and one or more thermoplastic elastomers with an organic nitrogen- and/or phosphorus-based intumescent flame retardant comprising a piperazine component. The composition is processed easily to make a wire and cable sheath exhibiting a balance of high flame retardancy, good flexibility, high wet electrical resistance and excellent heat deformation properties, and which passes the VW-I flame retardancy test, the UL1581 heat deformation test at 150&#xb0; C. and the wet electrical resistance test, and also exhibits good tensile and flexibility properties. Also disclosed is a wire and cable sheath made from the composition.

Halogen-free flame retardant thermoplastic compositions for wire and cable applications

The present invention is a flame-retardant polyurethane composition comprising (a) a thermoplastic polyurethane-based resin component, (b) a phosphorus flame retardant particulate filler, and (c) a low melting temperature phosphorus flame retardant agent.

Flame retardant polyurethane composition

A composition, preferably a halogen-free, flame retardant composition, comprising in weight percent based on the weight of the composition:

Polyurethane/polyolefin blends with improved strain and scratch whitening performance

Compositions comprising a thermoplastic elastomer, e.g., a polyurethane, a nitrogen and/or phosphorus-based, intumescent flame retardant, e.g., a polyphosphate, a non-phosphorus-based burn synergist, e.g., carbon black or a metal oxide, and an optional olefin polymer, EVA are provided. Color-stable, halogen-free, flame retardant compositions comprising a thermoplastic elastomer polymer, a phosphorus-based flame retardant, at least 3 weight percent TiO2 and a UV stabilizer are also provided.

Thermoplastic elastomer compositions comprising intumescent flame retardants and non-phosphorous-based flame retardant synergists

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.

Magnesium hydroxide-based flame retardant compositions made via in-situ hydration of polymer compounds comprising magnesium oxide

The present invention is a cable comprising one or more telecommunication or power transmission media or a core of two or more such media, each medium or core surrounded by at least one jacketing or sheathing layer comprising a polypropylene homopolymer or copolymer and having a relaxation spectrum (RSI) and melt flow (MF) such that RSI*MF^a is greater than about 12 when a is about 0.5.

Polypropylene cable jacket compositions with enhanced melt strength and physical properties

High-speed processable cellular insulation material with enhanced foamability

An article of manufacture comprising (i) a plurality of electrical conductors, each surrounded by one or more layers of a composition comprising (a) one or more polyolefins and, bonded thereto or blended therewith, (b) a linear or cyclic organopolysiloxane containing one or more functionalized hindered amine moieties; and (ii) hydrocarbon cable filler grease within the interstices between said surrounded conductors.

Telephone cables

An article of manufacture comprising (i) a plurality of electrical conductors, each surrounded by one or more layers of a composition comprising (a) one or more polyolefins and, blended therewith, (b) a mixture containing one or more alkylhydroxyphenylalkanoyl hydrazines and one or more defined functionalized hindered amines; and (ii) hydrocarbon cable filler grease within the interstices between said surrounded conductors.

An article of manufacture comprising (i) 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) a functionalized hindered amine amic acid hydrazide and (b) a functionalized hindered phenol or a functionalized hindered amine hydrazide and (ii) hydrocarbon cable filler grease within the interstices between said surrounded conductors.

A cable construction comprises 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: ##STR1## wherein n is about 2 to about 12; R is CxHyOz wherein x is about 2 to about 6, y is about 4 to about 16, and z is zero to about 3; ##STR2## wherein m is about 2 to about 30; n is about 2 to about 30; and x is about 1 to about 30; or ##STR3## wherein n is about 2 to about 20.

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##

A cable comprising one or more electrical conductors or communications media, or a core of two or more electrical conductors or communications media, each electrical conductor, communications medium, or core being surrounded by a composition, which is essentially halogen and antimony free, comprising:

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Bridgewater, NJ, United States of America

Geoffrey David Brown