Abstract: A purification method for an aqueous hydrogen peroxide solution, includes passing the aqueous hydrogen peroxide solution through a first H-form strong cation exchange resin column 1, a salt-form strong anion exchange resin column 2 and a second H-form strong cation exchange resin column 3. An H-form strong cation exchange resin having crosslinking of 6% or less, an H-form strong cation exchange resin having crosslinking of 9% or more, or an H-form strong cation exchange resin produced by steps (a) and (b) is used as an H-form strong cation exchange resin packed in the second H-form strong cation exchange resin column 3: (a) copolymerizing a monovinyl aromatic monomer with a crosslinkable aromatic monomer having a non-polymerizable impurity content of 3% by weight or less therein using a predetermined amount of a specified radical polymerization initiator at a predetermined polymerization temperature to obtain a crosslinked copolymer; and (b) sulfonating the crosslinked copolymer.

Abstract: A purification method for an aqueous hydrogen peroxide solution includes subjecting the aqueous hydrogen peroxide solution to a reverse osmosis membrane separation treatment with a high-pressure reverse osmosis membrane separation device. The high-pressure reverse osmosis membrane has a denser skin layer on the membrane surface and is therefore lower in an amount of membrane permeate water per unit operating pressure but higher in the rejection rate of TOC and boron, as compared with a low-pressure or ultralow-pressure reverse osmosis membrane. The high-pressure reverse osmosis membrane permeate water is preferably further subjected to an ion exchange treatment with an ion exchange device including two or more columns packed with gel-type strong ion exchange resins.

Abstract: A purification method for an aqueous hydrogen peroxide solution, includes passing the aqueous hydrogen peroxide solution through a first H-form strong cation exchange resin column 1, a salt-form strong anion exchange resin column 2 and a second H-form strong cation exchange resin column 3. An H-form strong cation exchange resin having crosslinking of 6% or less, an H-form strong cation exchange resin having crosslinking of 9% or more, or an H-form strong cation exchange resin produced by steps (a) and (b) is used as an H-form strong cation exchange resin packed in the second H-form strong cation exchange resin column 3: (a) copolymerizing a monovinyl aromatic monomer with a crosslinkable aromatic monomer having a non-polymerizable impurity content of 3% by weight or less therein using a predetermined amount of a specified radical polymerization initiator at a predetermined polymerization temperature to obtain a crosslinked copolymer; and (b) sulfonating the crosslinked copolymer.

Abstract: A non-contact IC label comprising an electrically insulating first substrate; an electrically connected antenna coil and IC chip provided on one surface of said substrate; a magnetic layer provided on said one surface of said substrate so as to cover said antenna coil and said IC chip, a first adhesive layer provided on said magnetic layer, an electrically insulating second substrate provided on said first adhesive layer, a second adhesive layer provided on said second substrate, a release paper provided on said second adhesive layer, and an overlay material provided on a third adhesive layer on the other surface of said first substrate.

Abstract: A non-contact type data reception and transmission body has an inlet having a base substrate, and an antenna and an integrated circuit chip which are provided on one side surface of the base substrate, and connected to each other, and a magnetic substrate layer disposed so that the magnetic substrate layer covers at least one of the antenna and the integrated circuit chip which constitute the inlet, wherein the magnetic substrate layer has a main component of a resin including a filler made of magnetic microparticles.

Abstract: Sheet-like audio information recording/reproducing means capable of recording/reproducing audio information is sandwiched between two support sheets from front and back only in part of the area thereof and these two support sheets are further sandwiched between two surface sheets and the support sheets and surface sheets are bonded together.

Abstract: A non-contact type data reception and transmission body has an inlet having a base substrate, and an antenna and an integrated circuit chip which are provided on one side surface of the base substrate, and connected to each other, and a magnetic substrate layer disposed so that the magnetic substrate layer covers at least one of the antenna and the integrated circuit chip which constitute the inlet, wherein the magnetic substrate layer has a main component of a resin including a filler made of magnetic microparticles.

Abstract: A non-contact IC label comprising an electrically insulating first substrate; an electrically connected antenna coil and IC chip provided on one surface of said substrate; a magnetic layer provided on said one surface of said substrate so as to cover said antenna coil and said IC chip, a first adhesive layer provided on said magnetic layer, an electrically insulating second substrate provided on said first adhesive layer, a second adhesive layer provided on said second substrate, a release paper provided on said second adhesive layer, and an overlay material provided on a third adhesive layer on the other surface of said first substrate.

Abstract: Sheet-like audio information recording/reproducing means capable of recording/reproducing audio information is sandwiched between two support sheets from front and back only in part of the area thereof and these two support sheets are further sandwiched between two surface sheets and the support sheets and surface sheets are bonded together.

Abstract: A first commodities receiving plate (9, 62) is provided for holding commodities (4) stored on a pair of neighboring commodities storing paths. An operation member (17, 70) interlocked with a pivotal motion of the first commodities receiving plate (9, 62) is fixed to a driving shaft (13, 67) for pivoting the first commodities receiving plate (9, 62). A second commodities receiving plate (20, 73) is disposed on the sliding surface side of each of the commodities storing paths and on the rear side of the first commodities receiving plate (20, 73), with one side of the second commodities receiving plate (20, 73) supported by a shaft. When the second commodities receiving plate (20, 73) is caused to pivot and the other side thereof is moved upward, the first commodity is fed out to a commodities feed-out port while the second commodity is prevented from moving to the commodities feed-out port.

Abstract: The present invention provides a highly elongated member of substantially uniform cross-sectional configuration which is capable of improved service as a stiffening support in an optical fiber cable. Such elongated member is the product of melt extrusion through an appropriate orifice of a thermotropic liquid crystalline polymer (as described). The resulting elongated member has been found to offer significant advantages when compared to stiffening supports heretofore proposed for use in optical fiber cables.

Abstract: A fiber-optic cable has reinforcement in the form of an elongated member such as a hollow tube, a member of solid circular cross-section, a channel member and/or an outer jacket formed of a thermotropic liquid crystalline polymer. That polymer has a coefficient of linear thermal expansion in the range of from -10.times.10.sup.-6 /.degree.F. to -4.times.10.sup.-6 /.degree.F. The reinforcing members constitute strength members which are preferably formed separate from, or simultaneously with, the introduction of an optical fiber.

Abstract: Provided is a process for the extrusion of shaped articles which comprises extruding a thermotropic liquid crystal polymer through a short land or preferably no land die, and with subsequent drawdown of the extruded profile being such as to render a drawdown ratio of less than 4, and preferably about 1. Such extrusion of liquid crystal polymers in accordance with the present invention can consistently and reproducibly provide one with an article of high mechanical properties, and thus, particular advantage is found in employing the process to extrude an article of cross-sectional dimensions which must closely approximate those of the extrusion die without sacrificing high mechanical properties.

Abstract: High performance foams comprised of thermotropic liquid crystal polymers are provided. The lightweight rigid foams exhibit a combination of excellent properties including enhanced mechanical properties such as high strength to weight ratio, high flame and thermal stability, and excellent solvent resistance. The foams fabricated from such polymers have significantly reduced anisotropy compared to unfoamed polymers. The transverse mechanical properties are enhanced by foaming relative to the percentage density reduction due to the foaming. The physical properties of the foams are further enhanced by heat treatment as the core of foams of thermotropic liquid crystal polymers consists of highly oriented cell walls which can exhibit greater enhancement upon heat treatment than is exhibited by the core of the unfoamed polymer.

Abstract: High performance foams comprised of certain thermotropic liquid crystal polymers are provided. Such thermotropic liquid crystal polymers comprise not less than about 10 mole percent of recurring 6-oxy-2-naphthoyl moieties. The lightweight rigid foams exhibit a combination of excellent properties including enhanced mechanical properties such as high strength to weight ratio, high flame and thermal stability, and excellent solvent resistance. The foams fabricated from such polymers have significantly reduced anisotropy compared to unfoamed articles of the same polymers.

Abstract: Multiaxially oriented laminates comprised of substantially uniaxially oriented sheets of liquid crystal polymers and a method of production thereof are provided which exhibit desirable mechanical properties and good thermal and chemical resistance. The sheets which comprise the laminate are thermally bonded together and oriented at an angle to one another to provide the multiaxially oriented laminate. The mechanical properties of the laminate can be adapted for specific applications by adjustment of the number, thickness and angle of orientation of each sheet.

Abstract: The present invention provides an improved process for extruding liquid crystal polymer. The process comprises the steps of providing a fluid stream of liquid crystal polymer wherein the stream has a flow pattern comprising substantial shear flow; converting the flow of the fluid stream of liquid crystal polymer to a substantially elongational flow in the substantial absence of shear flow; and extruding the fluid stream of liquid crystal polymer to form a shaped article having the polymer molecules oriented substantially parallel to the flow direction. The resulting articles are self-reinforcing, having mechanical properties superior to conventional extruded liquid crystal polymer articles and comparable to those of articles formed from fiber-reinforced isotropic polymeric materials.

Abstract: A process for the extrusion of melt processable liquid crystal polymer which provides improved processability characteristics is provided. The process comprises the steps of subjecting the liquid crystal polymer to an elevated temperature between the DSC transition temperature and the degradation temperature of the polymer; cooling the liquid crystal polymer to a processing temperature which is between the DSC transition temperature and the elevated temperature and at which the liquid crystal polymer is less subject to degradation than at the elevated temperature; and extruding the liquid crystal polymer into the form of a shaped article having mechanical properties which are improved over those of articles formed from liquid crystal polymer which has not been subjected to the elevated temperature.