Abstract: A polyamide resin composition using a recycled carbon fiber to establish reasonable manufacturing costs. The polyamide resin composition has excellent processability and can be used for injection molding, so that molded products with various structures can be made from the polyamide resin composition. In addition, good mechanical properties of the polyamide resin composition enable applications in various fields.

Abstract: The present invention relates to a process for preparing dioxolane by reacting ethylene glycol with an aqueous solution of formaldehyde in the presence of an acid catalyst. The raw product comprising water, dioxolane and methanol is fed to a phase separation unit (20) wherein an organic extracting agent is present. An organic fraction stream from the phase separation unit is transferred to an upper part of a purification column (30) from which dioxolane is withdrawn as a bottom product while the distillate stream of the purification column is recycled to the phase separation unit. An aqueous fraction stream from the phase separation unit is transferred to a waste water column (40), withdrawing a waste water stream from the bottom of the waste water column, recycling a distillate stream (42) from the waste water column to the phase separation unit, and withdrawing a side stream (43) containing methanol from a stage below the feed stage of the waste water column.

Abstract: The present invention relates to a process for preparing dioxolane by reacting ethylene glycol with an aqueous solution of formaldehyde in the presence of an acid catalyst. The raw product comprising water, dioxolane and methanol is fed to a phase separation unit (20) wherein an organic extracting agent is present. An organic fraction stream from the phase separation unit is transferred to an upper part of a purification column (30) from which dioxolane is withdrawn as a bottom product while the distillate stream of the purification column is recycled to the phase separation unit.

Abstract: The present disclosure is directed to a resin composition for a camera module having excellent laser transmittance and a camera module member produced using the same. In one embodiment, the resin composition for a camera module includes: 25 to 50 wt % of a polycarbonate resin; 5 to 30 wt % of a polycyclohexylenedimethylene terephthalate (PCT) resin; 30 to 50 wt % of a fibrous filler; and 0.001 to 5 wt % of a dye.

Abstract: The present invention relates to a process for energy recovery in a process for the preparation of 1,3,5-trioxane.

Abstract: A thermoplastic elastomer resin composition for a moisture-permeable waterproof film includes a thermoplastic elastomer resin composed of a hard segment containing polybutylene terephthalate and a soft segment containing polyethylene glycol and polytetramethylene glycol, wherein the polyethylene glycol is contained in an amount of 30 to 70 wt % and the polytetramethylene glycol is contained in an amount of 1 to 10 wt %, based on the total weight of the thermoplastic elastomer resin. A moisture-permeable waterproof film formed of the elastomer composition and a moisture-permeable waterproof fabric in which the moisture-permeable waterproof film is stacked on at least one surface of a substrate fiber are also provided.

Abstract: Disclosed are a polyoxymethylene resin composition and a molded product including the same, wherein the polyoxymethylene resin composition includes a polyoxymethylene resin; and, based on 100 parts by weight of the polyoxymethylene resin, 0.01 to 0.5 parts by weight of alkaline earth metal hydroxide, 0.01 to 1 parts by weight of porous organic/inorganic hybrid silicate, 0.01 to 1 parts by weight of LDPE (Low Density Polyethylene), and 0.02 to 0.5 parts by weight of polyhydric alcohol fatty acid ester, thereby exhibiting improved thermal stability and mold deposit resistance of a molded product while retaining the inherent properties of polyoxymethylene resin, such as mechanical strength and impact resistance.

Abstract: The present invention relates to a poly-ether-ester elastomer resin composition and elastic monofilaments prepared therefrom, and more specifically to a thermoplastic poly-ether-ester elastomer resin composition and elastic monofilaments prepared therefrom, wherein the thermoplastic poly-ether-ester elastomer resin composition is prepared from a poly-ether-ester block copolymer, a heat stabilizer, a UV absorber, a hindered amine light stabilizer, and porous silica, thereby ensuring excellent perceived quality, spinnability and weavability.

Abstract: Disclosed is a polyamide resin composition, which includes a polyamide resin and 5˜100 parts by weight of a polypropylene resin, 10˜135 parts by weight of glass fiber, and 0.1˜8 parts by weight of a phenolic heat-resistance agent, based on 100 parts by weight of the polyamide resin, and which also has low ion release, few changes in properties even when being exposed to external environment of high or low temperature, and high productivity, thus making it easy to serve as a material for a humidifier for a fuel cell membrane for vehicles.

Abstract: The present invention relates to a poly-ether-ester elastomer resin composition and elastic monofilaments prepared therefrom, and more specifically to a thermoplastic poly-ether-ester elastomer resin composition and elastic monofilaments prepared therefrom, wherein the thermoplastic poly-ether-ester elastomer resin composition is prepared from a poly-ether-ester block copolymer, a heat stabilizer, a UV absorber, a hindered amine light stabilizer, and porous silica, thereby ensuring excellent perceived quality, spinnability and weavability.