Abstract: The present invention discloses microcellular fibers, in which microcells are formed with a density of more than 107 cells/cm3 with a supercritical fluid introduced into fiber forming polymers and have a rate of volume expansion of 1.2 to 50, ratio of microcell length to microcell diameter of more than 2 and a monofilament diameter of more than 5 ?m. The microcellular fibers provide high and uniform cell densities and are good in the rate of volume expansion and the ratio of cell length to cell diameter, thus they are very excellent in lightweight feeling and touch.

Abstract: Disclosed is a light diffusion resin composition that is prepared by adding a bead type light diffusion resin comprised of PMMA as a light diffuser to a polyester resin according to the present invention. The light diffusion resin composition can be molded into a cover for lightings or sign boards by a processing method such as injection molding, extrusion molding or compression molding, so that the cover has a high haze and high light transmittance, making lamps of the lightings or the sign boards, interior lamps of buildings and contents invisible with a high light transmittance and hence a high level of luminance, provides a low surface resistance to prevent dust-attraction caused by static electricity, and minimizes a deterioration of impact strength, thereby allowing the manufacture of the cover irrespective of size.

Abstract: The present invention relates to a high shrinkage side-by-side type composite filament, wherein two kinds of thermoplastic polymers are arranged side by side type and a boiling water shrinkage (Sr2) measured by the method (initial load=notified denier×1/10 g, static load=notified denier×20/10 g) of clause 5.10 of JIS L 1090 is 20 to 75% of a boiling water shrinkage (Sr1) measured by the method (initial load=notified denier×1/30 g, static load=notified denier×40/30 g) of clause 7.15 of JIS L 1013. The side-by-side type composite filament is made of two kinds of thermoplastic polymers having a number average molecular weight difference (ïMn) of 5,000 to 15,000 upon spinning and the composite filament is drawn and heat-treated so as to satisfy the following physical properties: Temperature area exhibiting 95% of maximum thermal stress (Tmax, 95%): 120 to 230° C. Range of maximum thermal stress per denier: 0.1 to 0.

Abstract: The present invention relates to a dope dyed sea-island type conjugate multifilament. In the dope dyed sea-island type conjugate multifilament, which comprises easy soluble polymer as a sea component and polyester as an island component, the island component contains a dope dyed component selected from the group consisting of carbon black, pigments and dyestuffs and the temperature range (T?-T?) showing more than 95% of the maximum thermal stress of yarns is from 120° C. to 210° C. The dope dyed sea-island type conjugate multifilament of the present invention has an excellent thermal shrinkage property and excellent wash fastness and light fastness, and the dyeing process thereof can be omitted after producing a woven or knitted fabric because a dope dyed component is contained in the island component (ultra fine yarn). The dope dyed sea-island type conjugate multifilament of the present invention is useful as yarns for warp knit fabrics used in production of women's apparel.

Abstract: Polyester multi-filamentary yarn, useful as tire reinforcement, is produced by melting polyester resin at 290° C. or below including at least 90 mol % of polyethylene terephthalate with intrinsic viscosity of 0.7-1.2; filtering the molten resin for filtering retention time of ten minutes or below; spinning the filtered, molten resin by extrusion through a nozzle which has 250-500 holes, each ranging in diameter from 0.5 mm to 1.2 mm with a length/diameter ratio from 2 to 5; primarily quenching the extruded yarn at a temperature of 100-195° C. in a zone of 50 mm or more distance directly below the nozzle; secondarily quenching the yarn with air at its glass transition temperature (Tg) or below; taking off the yarn at spinning stress of 0.3 g/d or greater; drawing taken-off yarn at total draw ratio of 1.3 or greater; and thermally treating the yarn at temperature 150-230° C.

Abstract: Disclosed is a manufacturing method of a circuit of a printed circuit board using a dry film resist in forming a circuit pattern on a copper overlaid laminate as a normal printed circuit board, in which a modification of the manufacturing process can enhance the resolution and fine weldability of the resist to realize a fine structure of the circuit pattern. The method includes: laminating the dry film resist on the top surface of the printed circuit board; exposing the dry film resist to ultraviolet (UV) radiations using a photomask in which a desired circuit pattern is formed; annealing the resulting material of the previous step with infrared (IR) radiations; and removing unexposed areas of the resist by development.

Abstract: Disclosed is an aqueous-prodrug compound comprising paclitaxel or derivatives thereof. The prodrug compound exhibits improved bioavailability.

Abstract: Disclosed is a flame retardant polybutyleneterephthalate resin prepared be copolymerizing a phosphorus-based flame retardant represented by the following formula I and a butyleneterephthalate unit: wherein R1 and R2 are different or the same and are methyl or butyl including a hydroxyl group.

Abstract: This invention relates to a polyurethaneurea elastic fiber of which the weatherability is excellent and the preparing method thereof. The invention prepares the polyurethaneurea elastic fiber by adding the formamidine type ultraviolet adsorber of the following formula I to the spinning dope and the strength maintenance rate of the polyurethaneurea elastic fiber is over 90% after being leaved for 24 hours at the Fade-O-Meter in which the sunshine carbon arc is installed. Wherein, R and R represent an each alkyl group of 1 to 5 carbon atoms.

Abstract: The present invention provides a polyester heat-shrinkable tube for coating electrolytic condenser molded from a resin composition comprising a) 80 to 99 wt % of a copolymerized polyester resin with an intrinsic viscosity of 0.65 to 1.0 dl/g, which comprises 1 to 15 mol % of polyethylene naphthalate and 85 to 90 mol % of polyethylene terephthalate, and b) 1 to 20 wt % of polybutylene terephthalate resin. The polyester heat-shrinkable tube of the present invention has superior heat resistance, strength and coating-adhesion property, so that no cracks may occur in dry-heat treatment after the coating and contraction step, and also that the tube can be tightly adhered to the condenser.

Abstract: Disclosed are polyester multi-filamentary yarn useful as a reinforcement for tires and a dipped cord formed therefrom. The polyester multi-filamentary yarn comprises at least 90 mol % of polyethylene terephthalate and has an intrinsic viscosity of 0.70-1.2 and a tenacity of 5.5-8.5 g/d with an intermediate elongation difference (E1−E0) between intermediate elongations E0 and E1 amounting to 6% or greater. The polyester dipped cord is produced by subjecting at least two strands of polyester multi-filamentary yarn to first twisting and second twisting, the polyester multi-filamentary yarn comprising 90 mol % of polyethylene terephthalate; forming the strands into a fabric; and treating the fabric with blocked isocyanate and resorcinol formaldehyde latex (RFL), wherein the cord satisfies the following characteristics: a) a tenacity of 5.0 g/d or greater, b) a dimensional stability index (E4.5+SR) of less than 7.

Abstract: This invention relates to a solar control film that blocks the sunlight, when applied to various windows of automobiles, buildings or exhibition places and that prevent any second accident caused by broken glasses at an accident. From the solar control film, a surface protective layer, a plastic film substrate, a hologram-engraved layer, a metal deposition layer, a pressure sensitive adhesive layer and a release film are laminated in due order. The solar control film of this. Hence the above-described solar film has a basic function such as an excellent blocking rate of visible and infrared rays, while demonstrating an additional antifog action and an elegant look due to the hologram effect.

Abstract: The polyester composition for films includes, based on 100 parts by weight of a polyester resin, 0.01 to 5 parts by weight of aluminum silicate particles containing aluminum and silica as principal components and an alkali metal. To provide polyester films suitable for magnetic recording media, the polymer composition contains surface- modified aluminum silicate particles and two additional particles distinct in particle diameter. The polyester films thus obtained have excellent abrasion resistance and scratch resistance.

Abstract: A biaxially oriented polyester film with improved dyeability is prepared by meltblending 55 to 90 wt. % of polyethylene terephthalate and 10 to 45 wt. % of polytrimethylene terephthalate.

Abstract: Disclosed are polyester multi-filamentary yarn useful as a reinforcement for tires and a dipped cord formed therefrom. The polyester multi-filamentary yarn comprises at least 90 mol % of polyethylene terephthalate and has an intrinsic viscosity of 0.70-1.2 and a tenacity of 5.5-8.5 g/d with an intermediate elongation difference (E1-E0) between intermediate elongations E0 and E1 amounting to 6% or greater. The polyester dipped cord is produced by subjecting at least two strands of polyester multi-filamentary yarn to first twisting and second twisting, the polyester multi-filamentary yarn comprising 90 mol% of polyethylene terephthalate; forming the strands into a fabric; and treating the fabric with blocked isocyanate and resorcinol formaldehyde latex (RFL), wherein the cord satisfies the following characteristics: a) a tenacity of 5.0 g/d or greater, b) a dimensional stability index (E4.5+SR) of less than 7.

Abstract: Disclosed are polyester multi-filamentary yarn useful as a reinforcement for tires and a dipped cord formed therefrom. The polyester multi-filamentary yarn comprises at least 90 mol % of polyethylene terephthalate and has an intrinsic viscosity of 0.70-1.2 and a tenacity of 5.5-8.5 g/d with an intermediate elongation difference (E1−E0) between intermediate elongations E0 and E1 amounting to 6% or greater. The polyester dipped cord is produced by subjecting at least two strands of polyester multi-filamentary yarn to first twisting and second twisting, the polyester multi-filamentary yarn comprising 90 mol % of polyethylene terephthalate; forming the strands into a fabric; and treating the fabric with blocked isocyanate and resorcinol formaldehyde latex (RFL), wherein the cord satisfies the following characteristics: a) a tenacity of 5.0 g/d or greater, b) a dimensional stability index (E4.5+SR) of less than 7.

Abstract: Disclosed are polyester multi-filamentary yarn useful as a reinforcement for tires and a dipped cord formed therefrom. The polyester multi-filamentary yarn comprises at least 90 mol % of polyethylene terephthalate and has an intrinsic viscosity of 0.70˜1.2 and a tenacity of 5.5˜8.5 g/d with an intermediate elongation difference (E1−E0) between intermediate elongations E0 and E1 amounting to 6% or greater. The polyester dipped cord is produced by subjecting at least two strands of polyester multi-filamentary yarn to first twisting and second twisting, the polyester multi-filamentary yarn comprising 90 mol % of polyethylene terephthalate; forming the strands into a fabric; and treating the fabric with blocked isocyanate and resorcinol formaldehyde latex (RFL), wherein the cord satisfies the following characteristics: a) a tenacity of 5.0 g/d or greater, b) a dimensional stability index (E4.5+SR) of less than 7.

Abstract: A PMMA resin containing an impact modifier capsulated therein, said impact modifier comprising a core of a glass polymer, an intermediate layer of a rubber copolymer grafted to the core and an outer layer of a glass polymer grafted to the intermediate layer, the impact modified PMMA resin having a granular shape, the amount of the core being 5 to 20 weight %, the amount of the intermediate layer being 10 to 70 weight % and the amount of the outer layer being 25 to 85 weight %, the intermediate of the rubber copolymer being a copolymer of at least one monomer selected from the group consisting of butylacrylate and butadiene and a monomer of styrene, the outer layer of a glass polymer containing a chain transfer agent.

Abstract: The present invention relates to produce a polysulfone based hollow fiber membrane, having high water permeable coefficient and excellent permeability with no deterioration of separation capability, characterized by using an internal coagulating liquid and/or an external coagulating liquid containing diethylene glycol(DEG) and/or salt which can form a hydrate in the process of producing the polysulfone based hollow fiber membrane by following steps: (a) Extrude a spinning dope comprising polysulfones resin, organic solvent and polyvinyl pyrrolydone(PVP) into air through a biannular spinning nozzle to obtain an extrudate in the form of a hollow fiber, (b) Simultaneously inject an internal coagulating liquid into the biannular spinning nozzle at inside bore thereof, and (c) Subsequently introduce said extrudate to an external coagulating liquid.

Abstract: Disclosed is a reel for winding photosensitive film (6) which stabilizes the winding shape of the film and minimizes the deformation of a photosensitive layer caused by the winding tension. The winding reel is easily carried and stored, and has a sufficient strength to stand against the winding tension of the wound photosensitive film. The user can check the amount of the wound photosensitive film. The winding reel has a cylindrical reel member (10) for winding the photosensitive film around a circumference thereof with a predetermined tension, and flange members (20, 30) detachably coupled to both sides of the reel member. The flange members (20, 30) have inner surfaces which are disposed in opposition to each other and are closed to both edges of the photosensitive film wound around the reel member. By the winding reel, it is possible to wind the photosensitive film around the reel member (10) with a proper tension.