Abstract: A selective catalytic reduction body for the removal of nitrogen oxides (NOx), comprising about 5 to 80% by weight of vanadium, about 0 to 60% by weight of molybdenum, about 0 to 20% by weight of nickel and about 0 to 20% by weight of cobalt, which catalytic body is economically favorable in production cost and superior in removing the nitrogen oxides from exhaust gas, can keep is activity high for a long time by virtue of excellent thermal resistance and poison resistance to sulfur oxides and other chemicals, exhausts un-reacted ammonia and heavy metal fly ash at the lowest amount, and allows the catalyst volume necessary to obtain the same removal degree and the pressure loss attributed to the volume to be minimized.

Abstract: A method for and an apparatus for controlling and optimizing a xylene isomer separation and isomerization process, in which near infrared light of a wavelength ranging from 1,100 nm to 2,500 nm is transmitted through samples obtained at different stages of the process from raw materials flowing in the process by use of an analyzer system using optical fibers, thereby simultaneously measuring, in an on-line manner, xylene isomers and aromatic hydrocarbons containing 6 to 9 carbon atoms from those samples. Accordingly, it is possible to monitor the entire operation state of the process within 15 minutes in an on-line manner. Conventionally, 2 to 3 days are taken for the same monitoring.

Abstract: Disclosed are an oxygen barrier resin composition and products containing the resin. The resin composition comprises 20 to 80 wt % of an ethylene-vinyl alcohol copolymer, 5 to 79 wt % of an ethylene copolymer, and 1 to 30 wt % of a compatibilizer obtained between a random copolymer of ethylene-maleic anhydride-alkyl(meth)acrylate and a polyamide oligomer ranging, in molecular weight, from 1,000 to 5,000. The compatibilizer functions in such a way that the main chain of the polyamide penetrates into the ethylene-vinyl alcohol phase while the main chain of the ethylene-alkyl(meth)acrylate exists in the ethylene copolymer phase. The resin composition is superior in both melt-moldability and compatibility, providing films, sheets or bottles with superb appearance (transparency), mechanical strength and oxygen barrier.

Abstract: There is disclosed a method for producing acetylene alcohol compounds in a continuous process, which are produced via ethynylation in which ketones containing a group --CH.sub.2 COCH.sub.2 --, are condensed with acetylenes at a temperature of about 20 to 50.degree. C. under a pressure of about 10 to 30 kg/cm.sup.2 in the presence of a quaternary ammonium hydroxide anion exchange resin having strong basicity in an aprotic solvent by feeding a reactant mixture at an LHSV range of 0.1 to 5.0 and the reactant mixture comprises the acetylene, the ketone and the solvent at a molar ratio of 1.0:0.2-3.0:1.0-4.0.

Abstract: O-Carbamoyl-phenylalaninol having substituent at benzene ring, represented by the general formula I, and pharmaceutically useful salts thereof, which are useful for the prophylaxis and treatment of CNS disorder including depression and anxiety, are disclosed: ##STR1## wherein R is lower alkyl containing 1 to 8 carbon atoms, halogen such as F, Cl and I, alkoxy containing 1 to 3 carbon atoms, thioalkoxy containing 1 to 3 carbon atoms, nitro, hydroxy, or trifluorocarbon, and x is an integer of 1 to 3, with a proviso that R is the same or different when x is 2 or 3.

Abstract: A polypropylene resin composition comprises (1) 40 to 99% by weight of a polypropylene resin; (2) 1 to 60% by weight of an ethylene/alpha-olefin copolymer elastomer; (3) 20 to 50 parts by weight of a low molecular weight polypropylene resin modified with unsaturated carboxylic acid or its anhydride, and (4) 0.1 to 20 parts by weight of an epoxy resin represented by the following chemical formula I: ##STR1## wherein n is an integer of 1 to 4 and A is a multivalent group having a bond number of n and is selected from bisphenol A-type ethers, propylene oxide-type ethers and ethylene oxide-type ethers, the components (3) and (4) being based on 100 parts by weight of the components (1) and (2) in total. The composition is suited for polypropylene materials to be painted, such as automobile bumpers, by virtue of its superior paint adhesion even under the condition of no pretreatments.

Abstract: The optically pure forms of monocarbamates of halogenated 2-phenyl-1,2-ethanediol and dicarbamates of 2-phenyl-1,2-ethanediol have been found to be effective in the treatment of disorders of the central nervous system, especially as anti-convulsive or anti-epileptic agents.

Abstract: The optically pure forms of monocarbamates of halogenated 2-phenyl-1,2-ethanediol and dicarbamates of 2-phenyl-1,2-ethanediol have been found to be effective in the treatment of disorders of the central nervous system, especially as anti-convulsive or anti-epileptic agents.

Abstract: An apparatus for forming a thin film comprises a housing defining a reaction chamber; a pair of electrodes securely fixed in the reaction chamber of the housing such that they are spaced from each other by a predetermined distance; and a plasma carrier detachably disposed between the pair of electrodes and having at least one substrate assembled thereto, the plasma carrier and at least one substrate cooperating with each other to delimit a glow discharge space, the plasma carrier being formed with a plurality of gas intake holes and a plurality of gas exhaust holes for communicating the glow discharge space with the outside. According to the present invention, in a plasma chemical vapor deposition device, a glow discharge space is delimited by a plasma carrier, whereby a cleansing procedure is simplified and productivity is enhanced while advantages of a box carrier type plasma chemical vapor deposition device are afforded.

Abstract: The present invention relates to polyether amino acid ester compounds, preparation method and their use as hydrocarbon fuel additives.

Abstract: The present invention relates to novel alpha-tocopherol cyclopropylates, represented by the following formula I: ##STR1## wherein R.sub.1, R.sub.2, R.sub.2', R.sub.3 and R.sub.3', which may be the same or different, each is a hydrogen atom, a linear or branched C.sub.1 -C.sub.10 alkyl chain, phenyl, acetyl or halogen.

Abstract: The present invention provides novel 1,2,3,4-tetrahydroisoquinoline carbamate and thiocarbamate derivatives represented by Formula I ##STR1## wherein: X.sub.1 and X.sub.2 are the same or different from each other and independently represent a a member selected from the group consisting of hydrogen, alkyl, alkoxy, thioalkoxy, halogen, hydroxy, nitro and trifluorocarbon;Y is a member selected from the group consisting of oxygen and sulfur;R.sub.1 is a member selected from the group consisting of hydrogen, alkyl, arylalkyl, and CONHR' where R' is selected from the group consisting of hydrogen, alkyl, arylalkyl and aryl;R.sub.2 and R.sub.3 are the same or different from each other and independently represent a member selected from the group consisting of hydrogen, alkyl, arylalkyl, and cycloalkyl, or R.sub.2 and R.sub.3 may form a 5 to 7-membered ring together with the nitrogen atom to which they are bonded;R.sub.