Provided is a polyphenylene ether resin composition whose mechanical properties are difficult to be changed through high temperature aging (e.g. 145 C.) while heat resistance and mechanical and electrical properties are maintained. When the bend elastic constant of the polyphenylene ether resin composition before aging measured in accordance with ISO-178 in an atmospheric air is taken as 100%, time required for the bend elastic constant to be 115% or more through aging in which the polyphenylene ether resin composition is left at rest at 150 C. is 2,000 hours or more; and a shaped article of 12.6 cm in length, 1.3 cm in width, and 1.6 mm in thickness formed from the polyphenylene ether resin composition exhibits a rate of change in chloroform-insoluble content of 15 mass % or less before and after aging in which the shaped article is left at rest for 1,000 hours at 150 C.

A sliding member is formed of a polytetrafluoroethylene resin. The polytetrafluoroethylene resin contains 2.4 wt % or more and 15.6 wt % or less magnesium phosphate, 7.6 wt % or more and 19.9 wt % or less barium sulfate, 0 wt % or more and 10.0 wt % or less molybdenum disulfide, and 8.3 wt % or more and 15.7 wt % or less fired clay.

The invention relates to a process for the preparation of a final heterophasic propylene copolymer (A) having a final melt flow rate in the range from 65 to 110 dg/min, comprising visbreaking an intermediate heterophasic propylene copolymer (A) having an intermediate melt flow rate, which intermediate melt flow rate is lower than the final melt flow rate, to obtain the final heterophasic propylene copolymer, wherein the intermediate heterophasic propylene copolymer (A) consists of (a) a propylene-based matrix, (b) a dispersed ethylene--olefin copolymer, wherein the sum of the total amount of propylene-based matrix and total amount of the dispersed ethylene--olefin copolymer in the intermediate heterophasic propylene copolymer is 100 wt % based on the intermediate heterophasic propylene copolymer.

A halogen-free flame retardant thermoplastic polyurethane elastomer composition and product and flame retardant package thereof comprised thermoplastic polyurethane and halogen-free flame retardant package. The halogen-free flame retardant comprises inorganic phosphorus-based flame retardant and can further comprise expandable graphite, melamine or derivatives thereof and organic phosphorus-based flame retardant. The composition is environmentally friendly and safe, the comprehensive mechanical properties thereof are excellent, does not drip during the burning test, passed UL94 with rating of V01.5 mm, and the limiting oxygen index thereof can be up to 35%.

Provided is a flame retardant resin composition excellent in flame retardance, and surface smoothness, appearance, flame retardance and electrical properties after a long-term thermal aging (e.g. 150 C., 500 hours) while maintaining mechanical and electrical properties. The disclosed flame retardant resin composition is a flame retardant resin composition containing a polyphenylene ether, in which, based on UL94 flammability test, an average burning time of a molded product having a length of 12.6 cm, a width of 1.3 cm and a thickness of 1.6 mm formed of the flame retardant resin composition before and after the aging processing in which the molded product is left to stand at 150 C. for 1000 hours under the atmospheric pressure is within 10 seconds, and a change rate of chloroform-insoluble component of the molded product before and after the aging processing is 15 mass % or less.

The undesirable odor of poly(phenylene ether) has discouraged its adoption for some end uses. Melt-blending poly(phenylene ether) with a small amount of a phosphate salt or its hydrate is found to substantially reduce the odor without affecting physical or thermal properties. The odor-reduction method is applicable to poly(phenylene ether) alone or in combination with other resins.

Provided are: an EVOH resin composition which can exhibit excellent gas-barrier performance after being subjected to a hot water treatment and rarely generates blisters even when being placed under a high-temperature and high-humidity condition; and a multilayered structure including a layer of the resin composition as a gas-barrier layer. A hydrate-formable alkaline earth metal salt having a specific water absorption property, particularly completely or partially dehydrated alkaline earth metal salt of acid, or a mixture thereof. The acid is selected from the group consisting of lactic acid, silicic acid, phosphoric acid, and citric acid. The partially dehydrated alkaline earth metal salt of the salt has a water content of 50 wt % or less.

A fluoroelastomer composition containing (a) a polyol-crosslinkable fluoroelastomer, (b) a cross-linking agent for polyol crosslinking, (c) a crosslinking accelerator; and (d) at least one acid acceptor selected from basic magnesium carbonate and magnesium phosphate, wherein the content of a divalent metal oxide is lower than 1 part by mass with respect to 100 parts by mass of the fluoroelastomer (a). Also disclosed is a molded article obtained by crosslinking the fluoroelastomer composition.

The present invention relates to a thermoplastic composition, in particular for use in extrusion and compounding, having a continuous phase, which comprises at least one first polymer, which is selected from a group comprising a polyester, a polyesteramide, a polyesteretheramide, an aliphatic or partially aromatic polyester urethane or mixtures thereof, in particular such compounds or mixtures having hydrophobic surface properties, and at least one dispersed phase, which, as the second polymer, comprises at least one biogenic crosslinking agent having a water content of 0.1 to 30 wt. %, in particular 5 to 25 wt. %, with reference to the total weight thereof, and wherein the first polymer of the continuous phase is not miscible with the second polymer of the dispersed phase, and has at least one inorganic filler, and at least one plasticizer. The composition according to the invention is characterized in that it has the plasticizer diglycerol or mixtures with diglycerol, and the filler is in a proportion of 0.1 to 40 wt. % with reference to the total weight of the composition.

The present invention relates to a composition for forming a conductive pattern and a resin structure having a conductive pattern, wherein the composition makes it possible to form a fine conductive pattern on various polymer resin products or resin layers through a simple process, and can more effectively meet needs of the art, such as displaying various colors. The composition for forming a conductive pattern, comprises: a polymer resin; and a non-conductive metal compound having a predetermined chemical structure, and may be a composition for forming a conductive pattern through electromagnetic irradiation, by which a metal nucleus is formed from the non-conductive metal compound.