Abstract: The invention provides a melt-blown non-woven fabric obtained by melt-blowing an ethylene-.alpha.-olefin copolymer having a density of smaller than 0.900 g/cm.sup.3 and a crystallinity of from 5 to 40% or by melt-blowing a resin composition which chiefly comprises said copolymer, a laminated non-woven fabric obtained by laminating as a unitary structure a dry-type non-woven fabric on the melt-blown fabric that is obtained by melt-blowing said copolymer or the resin composition which chiefly comprises said copolymer, and a cataplasm which comprises the non-woven fabric obtained by melt-blowing said copolymer or said resin composition which chiefly comprises said copolymer, a dry-type non-woven fabric laminated on said melt-blown non-woven fabric, and a medicine layer applied onto said dry-type non-woven fabric. The non-woven fabric or the laminated non-woven fabric has excellent elastic property, i.e.

Abstract: Polyolefin resin compositions having a sea and island structure wherein cycloolefin resin, graft modified cycloolefin resin and graft modified elastomer components are finely dispersed in polyamide by melt kneading the cycloolefin resin, graft modified cycloolefin resin, graft modified elastomer and polyamide. Molded products formed by using the polyolefin resin compositions of the present invention are high in impact strength and surface characteristics, particularly less in surface delamination, and also excellent in surface glossiness. The molded products are low in water absorption properties and also excellent in oil resistance.

Abstract: This invention provides novel pyrimidines or their pharmaceutically acceptable salts thereof and process for preparation thereof. The novel compounds are useful for neurological diseases of the peripheral and central nervous systems of animals.

Abstract: A method for preparing 1,1,2,2-tetrakis(4-hydroxy-3,5-dimethylphenyl)ethane (TKXE) comprising subjecting two molecules of bis(3,5-dimethyl-4-hydroxyphenyl) methane to dehydration-condensation under oxidizing conditions, an epoxy resin prepared by epoxidating TKXE obtained by the method and an epoxy resin composition comprising TKXE obtained by the method as a hardener and an epoxy resin as well as methods for preparing the resin and composition. The method makes it possible to prepare highly pure TKXE in the form of crystals. Moreover, the epoxy resin and the epoxy resin composition can provide hardened products excellent in physical properties such as heat resistance and mechanical strength.

Abstract: A surgical filament which has a surface coated with at least one N-long chain monoacylated basic amino acid having an aliphatic acyl group of from 6 to 22 carbon atoms or with a composition containing at least one of said N-long chain monoacylated basic amino acid, and has improved surface-slipping characteristics such as the ability to be passed through tissue and tie down property.

Abstract: An electret filter made of a resin whose angle of contact upon wetting with pure water is no smaller than 95 degrees, as well as an electret filter made of a resin whose angle of contact upon wetting with pure water has been adjusted to no smaller than 95 degrees by addition of silicone oil. Those electret filters have high trapping efficiency and their ability to trap particulates, especially cigarette smoke, will not deteriorate even if they are continuously used. Therefore, they can advantageously be used as filter media in many applications such as home and industrial air conditioners, air cleaners, fan heaters, vacuum cleaners, and air conditioning systems for common equipment.

Abstract: A thermoplastic resin composition according to the present invention comprises a polymer comprising recurring units derived from a polycyclic (meth)acrylate represented by the following formula [I] and a soft polymer in the proportion by weight of the polymer to the soft polymer of 99:1 to 40:60 ##STR1## where m is 0 or a positive integer, n is 0 or 1, R is hydrogen or methyl, R.sup.1 -R.sup.18 are each independently an atom or a group selected from the group consisting of hydrogen, halogen and hydrocarbon groups, R.sup.15 -R.sup.18, linked together, may form a monocyclic or polycyclic group which may have a double bond, or an alkylidene group, p is 0 or 1, and R.sup.a and R.sup.b each independently represent a hydrogen atom or a hydrocarbon group when p is 1.

Abstract: A magenta dyestuff for sublimation heat transfer recording is here disclosed which is represented by the formula (I) ##STR1## wherein R.sup.1 is an alkyl group or alkoxy group, R.sup.2 is an alkyl group, aryl group or halogenoalkyl group, R.sup.3 is an alkyl group, aryl group, alkoxyalkyl group, cyanoalkyl group, alkylcarboxyalkyl group or halogenoalkyl group, X is a hydrogen atom or alkoxy group, and Y is a hydrogen atom, alkoxy group, alkylcarbonylamino group or alkyl-sulfonylamino group, and this dyestuff is excellent in solubility, ribbon shelf stability, dye-fixing properties, durability and light resistance.

Abstract: According to the present invention, there is provided a thermoplastic elastomer laminate which comprisesa layer comprising a thermoplastic elastomer (A) composed of a crystalline polyolefin and a rubber, anda layer comprising an ultra-high molecular weight polyolefin (B) or an ultra-high molecular weight polyolefin composition.In addition, a glass run channel composed of the thermoplastic elastomer laminate is also provided in the invention.

Abstract: Paraformaldehyde of high formaldehyde content is produced by cooling and solidifying a 78-83 wt. % aqueous formaldehyde solution, and drying the resulting paraformaldehyde by means of microwave heating.

Abstract: Disclosed herein is a process comprising introducing a chlorine-containing gas through an adsorbent to adsorb chlorine and thereafter reducing the pressure of the adsorbent to a pressure lower than that during the introduction, thereby obtaining an effluent gas with a higher chlorine concentration than that of the introduced gas. Among preferably usable adsorbents are zeolite, non-zeolite-type porous acidic oxides and active carbon.

Abstract: A method for stabilizing an isocyanate compound by adding 10-5000 ppm of phenol to the isocyanate compound, and also an isocyanate composition so stabilized. In the isocyanate composition stabilized by the above method, coloring due to time-dependent changes and the occurrence of turbidity through self-polymerization are both suppressed so that it shows outstanding storage stability compared with a corresponding isocyanate composition containing a conventional stabilizer.

Abstract: Disclosed are a crystal and crystalline solvate of a fluoran compound represented by the formula ##STR1## wherein R.sub.1 is ##STR2## and which are useful as chromogenic compounds in recording materials such as pressure-sensitive and heat-sensitive recording materials, a process for preparation of said crystal and said crystalline solvate, and recording materials comprising said crystal or said crystalline solvate.

Abstract: A purification process of crude methacrylamide by recrystallization from an aqueous methacrylamide solution, comprising the steps of conducting crystallization by adjusting the hydrogen ion concentration of the aqueous methacrylamide solution to pH 8 or more, separating a methacrylamide crystal, adjusting 5% by weight or more of resulting mother liquor to pH 5 or less, separating precipitated insoluble matter, and reusing thus-treated mother liquor, is provided.The high quality methacrylamide crystal thus obtained is excellent in Hazen number, purity and transparency of a methanol solution and suitable for uses such as windshield glasses.

Abstract: In accordance with the present invention, there are provided high molecular weight polyethylene molecular orientation molded articles formed from high molecular weight polyethylenes having a weight average molecular weight of 300,000-600,000, said molecular orientation molded articles having a fineness of not more than 15 deniers, a tensile strength of more than at least 1.7 GPa and satisfying the tensile strength S (GPa)-weight average molecular weight M. (g/mol)-fineness D (denier) relationship represented by the formula [I] ##EQU1## and processes for preparing the same. Further in accordance with the present invention, there are also provided high molecular weight polyethylene molecular orientation molded articles formed from high molecular weight polyethylene having a weight average molecular weight of exceeding 600,000 and satisfying the relationship represented by the formula [II].

Abstract: Disclosed is an improved process for the preparation of an N-protected .alpha.-L-aspartyl-L-phenylalanine methyl ester from an N-protected L-aspartic anhydride and L-phenylalanine methyl ester, the improvement which comprises employing the L-phenylalanine methyl ester in the form of a mineral acid salt thereof and conducting the reaction either (a) in an organic solvent and in the presence of a salt of an organic carboxylic acid, or (b) in an organic solvent comprising an organic carboxylic acid and in the presence of at least one member of the group consisting of an alkali metal or an alkaline earth metal inorganic base, an ammonium alkali metal or alkaline earth metal salt of an organic carboxylic acid and ammonium carbonate. The starting N-protected aspartic anhydride, e.g., N-benzyloxycarbonyl-L-aspartic anhydride, can be produced by the reaction of N-protected aspartic acid with phosgene.

Abstract: Information recording discs comprise a disc substrate having a recording layer on one side thereof, one hub having an insertion portion to be inserted into a center hole of the disc substrate and a flange portion to cover the disc substrate in the vicinity of the center hole, at least an apex of the insertion portion being composed of a magnetic material, the hub being inserted into the center hole so that the flange portion is positioned on the recording layer side of the disc substrate, and an adhesive layer is provided between the flange portion and the disc substrate. By this construction, a portion of the hub which protrudes from the back surface of the disc substrate, facing toward the spindle of a turn table can be altered in dimension and/or the diameter of the protrusion portion of the hub can be made smaller than that of the center hole of the disc substrate.

Abstract: A method is provided for the separation of at least one aromatic amino acid from an aqueous solution of mixed amino acids including the aromatic amino acid. The aqueous solution is brought into contact with a strongly acidic gel-type cation exchange resin which has been converted into a salt with an alkali metal or an alkaline earth metal, whereby the aromatic amino acid is selectively sorbed by the cation exchange resin. The aromatic amino acid thus sorbed can then be desorbed from the ion exchange resin, preferably with water.

Abstract: Disclosed are magenta anthraquinone dyestuffs for sublimation thermaltransfer printing of one of the formulas ##STR1## wherein R is a halogen atom, methyl or methoxy; wherein R.sub.1 is a hydrogen atom, hydroxyl, a halogen atom, alkyl of 1 to 4 carbon atoms or alkoxy of 1 to 4 carbon atoms; and wherein R.sub.2 is a hydrogen atom, a halogen atom, alkyl or 1 to 4 carbon atoms or alkoxy of 1 to 4 carbon atoms, with the proviso that in formula (3) either R.sub.1 or R.sub.2 is not a hydrogen atom.

Abstract: The laminate of the invention comprises a substrate and a resin surface layer having a glossiness of not less than 60% when measured at an incidence angle of 60.degree. laminated on at least one side surface of the substrate, and the substrate is formed from at least one cycloolefin polymer (A) selected from the group consisting of a random copolymer (a-1) of specific cycloolefin and ethylene, a ring opening polymer (a-2) of specific cycloolefin, a ring opening copolymer (a-3) of specific cycloolefin and a hydrogenation product (a-4) of the ring opening polymer or the ring opening copolymer, or formed from a cycloolefin resin composition (B) comprising the cycloolefin polymer (A) and crystalline polyolefin and/or an .alpha.-olefin elastomeric copolymer. The substrate shows excellent resistance to flon gas, so that the resin surface layer is effectively prevented from occurrence of cracks caused by influence of flon gas.