A polymer composition is provided with improved stress whitening resistance, having at least one thermoplastic polymer material and a dielectric liquid. A process for preparing the polymer composition, a cable having at least one electrically insulating layer obtained from the polymer composition, and a process for preparing the cable are also provided.

The present disclosure relates to a novel flame retardant and stabilizer additive composition for thermoplastic polymers, the additive composition including at least one phosphorus-containing flame retardant and at least one carbodiimide, as described herein. The presently disclosed additive compositions are useful over a wide range of thermoplastic applications, particularly in thermoplastic polymers that are processed and/or used at high temperatures.

A polyphosphonate resin composition of the present invention comprises: approximately 100 parts by weight of a polyphosphonate resin comprising a repeating unit represented by chemical formula 1; and approximately 0.01-0.05 parts by weight of a sulfonate compound represented by chemical formula 2. The polyphosphonate resin composition has excellent thermal discoloration resistance, light discoloration resistance, flame retardancy, light transmittance and the like.

The present disclosure relates to a method for preparing a polyolefin using a supported hybrid metallocene catalyst. According to the present disclosure, a polyolefin having a narrow molecular weight distribution can be prepared very effectively by introducing a cocatalyst in an optimum content in the presence of a supported hybrid metallocene catalyst containing two or more metallocene compounds having a specific chemical structure. The polyolefin prepared according to the present disclosure exhibits excellent uniformity in chlorine distribution in polyolefin during chlorination, thereby significantly improving elongation of the chlorinated polyolefin, compatibility with PVC and impact reinforcing performance. Thus, it exhibits excellent chemical resistance, weather resistance, flame retardancy, processability and impact strength reinforcing effect, and can be suitably applied as an impact reinforcing agent for PVC pipes and window profiles.

The invention concerns a stabilising composition, comprising: at least one antioxidant comprising one or more of: a phenolic antioxidant, a phosphite antioxidant, a sulphur-containing antioxidant, and an aminic antioxidant; and at least one buffering agent, wherein the buffering agent has the capacity to buffer in aqueous solution at a pH range from 4 to 8.

A thermally conductive silicone potting composition that comprises, each in a preset amount, (A) an organopolysiloxane having at least two alkenyl groups per molecule and having a viscosity of 0.01-100 Pa.Math.s at 25° C., (B) an organopolysiloxane one end of which is blocked with an alkoxysilyl group, etc., (C) a crystalline silica having an average particle size of 0.1 μm or more and less than 5 μm, (D) a crystalline silica having an average particle size of 5 μm or more and less than 100 μm, (E) an organohydrogen siloxane having at least two SiH groups per molecule, and (F) a hydrosilylation reaction catalyst, wherein the mass ratio of (C)/(D) is from 3/1 to 1/10.

Provided is a heat-resistant resin composition which includes: a graft copolymer prepared by graft polymerization of a diene-based rubber polymer with an aromatic vinyl-based monomer and a vinyl cyan-based monomer; a first styrene-based copolymer including a maleimide-based unit and an aromatic vinyl-based unit; a second styrene-based copolymer including a vinyl cyan-based unit and an aromatic vinyl-based unit; and a third styrene-based copolymer including a vinyl cyan-based unit and an aromatic vinyl-based unit, wherein the second styrene-based copolymer and the third styrene-based copolymer include a vinyl cyan-based unit in mutually different amounts.

A polyacetal resin composition capable of keeping the generation of formaldehyde from a molded article at a very low level and stably keeping mold deposits at a minimum during molding. The polyacetal resin composition includes at least (A) 100 parts by mass of a polyacetal polymer, (B) 0.01-0.50 parts by mass of an aliphatic carboxylic hydrazide, (C) 0.001-0.50 part by mass of a hydantoin compound having two hydrazinocarbonylalkyl groups, and (D) 0.001-0.30 part by mass of an alkaline earth metal salt of an aliphatic carboxylic acid. The total amount of (B) and (C) is 0.03-0.55 part by mass per 100 parts by mass of the (A) polyacetal polymer.

Disclosed is a polyolefin thermal insulation foam and use thereof, and to a method for preparing a physically foamed polyolefin thermal insulation foam, which can be recycled well and which has excellent flexibility characteristics.

The present invention relates to a thermoplastic resin composition and a molded article using same, the thermoplastic resin composition comprising: (D) 4 to 12 parts by weight of a methyl methacrylate-butadiene-styrene graft copolymer; (E) 0.1 to 0.3 parts by weight of a phosphate-based heat stabilizer; and (F) 25 to 35 parts by weight of an inorganic filler having an average particle diameter (D50) of 1 to 5 μm, with respect to 100 parts by weight of a basic resin including (A) 65 to 75 wt % of a polycarbonate, (B) 20 to 30 wt % of an aromatic vinyl-cyanized vinyl copolymer; and (C) 1 to 10 wt % of a polyethylene terephthalate resin.