The present invention relates to a flame retardant polypropylene composition for a conduit, appliance, and/or automotive wire, comprising a flame retardant composition comprising: a) a base resin comprising a heterophasic propylene copolymer which comprises a polypropylene homo- or copolymer matrix and an ethylene propylene rubber dispersed in said matrix, and b) a metal hydroxide or hydrated compound, wherein the heterophasic propylene copolymer has a MFR.sub.2 below 0.8 g/10 min and a xylene cold soluble (XCS) fraction content between 1 and 15 wt % based on the total weight of the heterophasic propylene copolymer.

An ionomer may include a neutralized blend of an ethylene acid copolymer and an aliphatic, mono-functional organic acid. The ethylene acid copolymer may be the polymerized reaction product of: ethylene, alkyl acrylate; optionally monocarboxylic acid monomer; and unsaturated dicarboxylic acid monomer. Another ionomer may include a neutralized blend of a first ethylene acid copolymer, a second ethylene acid copolymer, and an aliphatic, mono-functional organic acid. The first ethylene acid copolymer may be the polymerized reaction product of ethylene; monocarboxylic acid monomer; and optionally alkyl acrylate. The second ethylene acid copolymer may be the polymerized reaction product of: ethylene; alkyl acrylate; and unsaturated dicarboxylic acid monomer. Either blend may comprise from 5 to 40 wt. % of the aliphatic, mono-functional organic acid. At least 30 mole percent of total acid units of either blend may be neutralized with a magnesium cation of the magnesium neutralizing salt.

A flame-retardant cable having a core is disclosed. The cable contains at least one conductor and a coating made from a low smoke zero halogen flame-retardant polymer composition. The polymer composition contains a halogen free base polymer added with a) less than 170 phr of at least one metal hydroxide; b) from 1 to 10 phr of a phyllosilicate clay; c) at least 1 phr and less than 10 phr of melamine or a derivative thereof; and d) an alkali or alkaline-earth metal carbonate. The cable has improved reaction to fire performances especially in that no dripping occurs during burning, which renders it compliant with the requirements of the more recent international standards.

The present application relates to a composition comprising the following components: A) at least one ethylene/alpha-olefin interpolymer; B) a peroxide; C) at least one filler selected from one or more carbon black samples, MgO, or a combination thereof; and optionally, at least one filler selected from silica, ZnO, CaCO.sub.3, Al (OH).sub.3, Mg (OH).sub.2, or a combination thereof; D) a calculated P content from 0.010 wt % to 0.300 wt %, based on the weight of the composition, and wherein the calculated P content is the calculated content the phosphorus element present in one or more phosphate compounds selected from Structure 1 below: O?P (OR1) (OR2) (OR3) (Structure 1), wherein R1, R2 and R3 are each, independently, selected from i) a non-aromatic hydrocarbon or ii) a non-aromatic hydrocarbon comprising at least one heteroatom, excluding P.

A method comprising at least a step (1) of preparing a silane master batch by melt-kneading, all or part of a polyolefin resin, an organic peroxide, an inorganic filler containing a metal hydrate and a metal carbonate, and a silane coupling agent, at a temperature equal to or higher than the decomposition temperature of the organic peroxide, and a step (3) of mixing the silane master batch and a silanol condensation catalyst or a catalyst master batch; a heat-resistant silane crosslinked resin molded body and a heat-resistant silane crosslinkable resin composition prepared by the method, and a silane master batch and a heat-resistant product.

A composition includes specific amounts of a poly(phenylene ether), a hydrogenated block copolymer of an alkenyl aromatic monomer and a conjugated diene, a polypropylene, a low molecular weight polybutene, a flame retardant, an ultraviolet absorbing agent, and a poly(alkylene oxide). The composition is useful as an insulation or jacketing material for wires and cables.

A composition includes specific amounts of a poly(phenylene ether), a hydrogenated block copolymer of an alkenyl aromatic monomer and a conjugated diene, a polypropylene, a low molecular weight polybutene, a flame retardant, an ultraviolet absorbing agent, and a poly(alkylene oxide). The composition is useful as an insulation or jacketing material for wires and cables.

A fiber optic cable comprises a core subassembly, comprising at least one optical transmission element, wherein the optical transmission element comprises at least one optical fiber and a tube surrounding the at least one optical fiber. The fiber optic cable further comprises a jacket surrounding the core subassembly. The jacket is configured as a multi-layered jacket that comprises an inner layer comprising a first flame retardant material, an intermediate layer comprising a second flame retardant material being different from the first flame retardant material of the inner layer, and an outer layer comprising a non-flame retardant material having a lower coefficient of friction than the first and the second flame retardant material.

Polymer matrix composite comprising a porous polymeric network; and a plurality of intumescent particles distributed within the polymeric network structure; wherein the intumescent particles are present in a range from 15 to 99 weight percent, based on the total weight of the intumescent particles and the polymer (excluding the solvent); and wherein the polymer matrix composite volumetrically expands at least 2 times its initial volume when exposed to at least one temperature greater than 135 C.; and methods for making the same. The polymer matrix composites are useful, for example, as fillers, thermally initiated fuses, and fire stop devices.

A production method, containing the step of: mixing 0.02 to 0.6 parts by mass of an organic peroxide, 0.2 to 300 parts by mass of an inorganic filler, 2 to 15.0 parts by mass of a silane coupling agent, and a silanol condensation catalyst, based on 100 parts by mass of a polyolefin-based resin, in which the inorganic filler has an X value specified by Formula (I) satisfies 5 to 1050,
X=A/BFormula (I) wherein, A denotes a total amount of a product of a BET specific surface area (m.sup.2/g) of the inorganic filler and a blending amount of the inorganic filler, and B denotes a blending amount of the silane coupling agent; and a crosslinkable resin composition and a crosslinked resin molded body produced by the production method; and a silane master batch and a molded article.