A resin composition comprising a maleimide compound, a cyanate ester compound, a silane compound having a styrene skeleton and a hydrolyzable group or a hydroxy group, and an inorganic filler.

A filling composition is disclosed, the composition comprises (i) between 4 to 20 wt. % of a selectively hydrogenated isoprene-styrene block copolymer having a structure S-EP with at least 40 wt. % polystyrene content, a total diblock apparent molecular weight of at least 160 kg/mole, the polystyrene block S has a true molecular weight in the range of 60 to 110 kg/mole, and the polyisoprene block (EP) has a molecular weight in the range of 80-100 kg/mole, (ii) an oil, and (iii) optional additives. The filling composition is characterized as having a thixotropic ratio of 2-10, a drop point of at least 200° C., and a cone penetration at 25° C. of <500 dmm.

A polyethylene composition comprising (A) an ethylene-based (co) polymer, (B) a styrenic unit-containing copolymer, and (C) a polyorganosiloxane. Also a method of making the composition; a crosslinked polyethylene product made by curing the composition; manufactured articles comprising a shaped form of the inventive composition or product; and methods of using the inventive composition, product, or articles.

In a conventional self-healing material, although the resin properties after self-healing are restored to the same level as the initial refractoriness and strength of the resin, no further extension of life can be expected. A resin cured product according to the present invention includes: a first vinyl monomer having an ester bond; a second vinyl monomer having a hydroxyl group; a transesterification reaction catalyst; and a boron compound.

The present invention aims to provide a resin composition which can provide a molded article excellent in insulation and showing a low relative permittivity and which causes no melt fracture even when extrusion-molded at a high shear rate. The resin composition of the present invention includes an aromatic polyether ketone resin (I) and a fluororesin (II). The fluororesin (II) is a copolymer of tetrafluoroethylene and a perfluoro ethylenically unsaturated compound represented by the following formula (1):
CF.sub.2CFRf.sup.1(1)
wherein Rf.sup.1 represents CF.sub.3 or ORf.sup.2; and Rf.sup.2 represents a C1-C5 perfluoroalkyl group. The aromatic polyether ketone resin (I) and the fluororesin (II) satisfy a melt viscosity ratio (I)/(II) of not lower than 0.001 but lower than 0.3.

The present disclosure relates to a high-voltage (HV) bushing comprising a condenser core configured for surrounding a HV electrical conductor. The condenser core comprises an insulation material comprising wound layers of a permeable solid material impregnated with a thermo-reversible gel. The gel comprises an oil and a thickener, the oil comprising iso-paraffinic oil in an amount within the range of 0.1-100 wt % of the oil and the thickener comprising at least one copolymer in an amount within the range of 0.1-10 wt % of the gel.

The invention provides a thermoplastic resin composition having (A) a thermoplastic polymer comprising (a1) 5 mass % to less than 50 mass % of a propylene polymer having a melting point of 150 C. or higher, (a2) 10 mass % to less than 60 mass % of an ethylene polymer, (a3) 5 mass % to less than 50 mass % of, for example, a hydrogenated product of a block copolymer of an aromatic vinyl compound and a conjugated diene compound, and (a4) 1 mass % to less than 30 mass % of, for example, an unsaturated carboxylic acid-modified olefin polymer; (B) a softener for nonaromatic rubbers; (C) a metal hydrate; (D) an organic peroxide; (E) an antioxidant; and (F) a coupling agent.

A cable comprising a covering having two or more different sheath layers, with the covering providing superior chemical and weathering resistance, and excellent surface feel. In a preferred embodiment, the outermost sheath layer of the covering is a thermoplastic elastomer essentially free of a flame retardant material, yet the covering achieves desirable flame retardant performance due to the presence of an inner sheath layer comprising a thermoplastic elastomer and a flame retardant, preferably halogen-free flame retardant. The outermost sheath layer also exhibits sought-after surface qualities. Methods for producing the coverings and flame retardant cables are disclosed.

The invention relates to a composition comprising a) a thermoplastic matrix polymer based on one or more ethylenically unsaturated polymerizable monomer(s), wherein the thermoplastic polymer is selected from the group consisting of polyolefins, polystyrene, polyacrylates, ethylene-vinylacetate copolymer, and copolymers and blends of the aforementioned, b) an inorganic flame retardant, c) a polymer based on one or more ethylenically unsaturated polymerizable monomers and having a plurality of alkoxysilane and/or acetoxysilane groups covalently linked to the polymer, wherein the ethylenically unsaturated polymerizable monomers of component c) are different or have a different composition than the ethylenically unsaturated monomer(s) of component a) and d) a clay.

Disclosed herein is a styrenic block copolymer [A1-B1-C1], consisting essentially of polymer blocks A1, B1 and C1. A1 is a poly(para-alkylstyrene) block having a molecular weight from 1,000 to 60,000 g/mol. B1 is a hydrogenated polyisoprene block or a hydrogenated polybutadiene block having a molecular weight from 1,000 to 100,000 g/mol. C1 is a polystyrene block having a molecular weight from 1,000 to 100,000 g/mol; or a polymer block consisting essentially of polymerized styrene units, and hydrogenated butadiene and/or isoprene units, and having a molecular weight from 1,000 to 100,000 g/mol. Prior to hydrogenation, the block B1 has a vinyl content of 5-75 mol %; and the block C1 forms 1-80 wt % of the overall weight of the block copolymer. The selectively sulfonated forms of the copolymers are useful as high dielectric materials.