Abstract: A process for polymerizing an olefin comprises effecting said polymerization in contact with a catalyst of a combination of a first solid component prepared by treating a mixture of (a) a titanium tetrahalide, (b) a vanadyl alcoholate and (c) a vanadyl trihalide, with an organoaluminum compound, and a second component of an organoaluminum compound.

Abstract: Steroidal 19-nor-3-hydroxy-1, 3, 5(10)-trienes are produced by a process which comprises admixing a preheated hydrocarbon and a solution of a steroidal 10-methyl-1, 4-diene-3-one dissolved or suspended in a hydrocarbon, and then pyrolyzing said steroidal compound.

Abstract: A polyhydroxylunsaturated hydrocarbon polymer is hydrogenated over a ruthenium catalyst to produce a polyhydroxyl saturated hydrocarbon polymer.

Abstract: A carbon black coloring agent is obtained by (1) mixing a hydrophobic vehicle with an aqueous slurry containing a carbon black obtained by treating a furnace black having an electromicroscopic average particle size of from about 5 to about 35 m.mu. with a modifier selected from the group consisting of ozone, nitric acid, hydrogen peroxide, chromic acid and permanganate, and (2) removing the water.

Abstract: An epoxy resin composition which comprises an epoxy resin derived from an ester of an alkadienealcohol; an epoxy resin prepared by reacting an epichlorohydrin and a bisphenol and an acid anhydride curing agent. The cured product has very high mechanical strength and cracking resistance and is useful as an electrical insulating material.

Abstract: A solid catalytic complex for the polymerization of an olefin has the formula:[MgM.sub.1-n ]X.sub.m . xYwherein M represents a transition metal selected from the group consisting of titanium and vanadium; X represents a halogen atom; Y represents an aliphatic ether or a cyclic ether; n is 0.01 - 0.99; 2<m<4; and 1<x<3.

Abstract: 3-(5,7-Dimethyl-2-hydroxy-4-oxo-6,8-decadienyl)-glutarimide is prepared by cultivating Streptomyces pluricolorescens var. yamashitaensis (S-885) ATCC No. 21956 in an aqueous nutrient broth containing a carbohydrate and a source of organic nitrogen until said broth achieves substantial antiviral activity, and recovering said antibiotic from said culture broth. This antibiotic is effective against the viruses of polio and A-type influenza.

Abstract: A diazamethine cationic dyestuff is disclosed which is suitable for dyeing a synthetic fiber in yellow shade with good fastness to light and to heat.

Abstract: A method of culturing monogastric animals which comprises feeding the animals a feed in which part of the protein is supplied by a urea-isobutyraldehyde condensate.

Abstract: A.DELTA..sup.1 - tetrahydrophthalic anhydride is reacted with an amine in the presence of lower fatty acid. Alternatively N-(4-hydroxyphenyl)-.DELTA..sup.1 -tetrahydrophthalimide or a salt thereof is reacted with an aralkyl halide. A N-substituted-.DELTA..sup.1 -tetrahydrophthalimide compound having herbicidal activity is produced. This compound has the formula ##EQU1## wherein R' is naphthyl; phenyl; phenyl substituted by 1-3 substituents selected from the group consisting of halogen, nitro, cyano, thiocyano, carboxyl, haloalkyl, lower alkyl and alkylthio; --CH.sub.2 Y wherein Y is phenyl, naphthyl or phenyl substituted by 1-5 substituents selected from the group consisting of halogen, nitro, lower alkyl and lower alkoxyl; or ##SPC1##Wherein Z is phenyl, naphthyl, or phenyl substituted by at least one substituent selected from the group consisting of halogen, nitro, lower alkyl and lower alkoxyl.

Abstract: An electrically insulating prepreg which comprises a resin composition of an alicyclic epoxy compound prepared by the expoxidation of an alkadiene alcohol ester of an alicyclic polybasic carboxylic acid, a latent curing agent, and a solid substrate, wherein said resin composition, once it has been applied to the substrate, is in the B-stage cured state and is thereby acetone soluble, thermoplastic and nontacky.

Abstract: A 1,3-conjugated diene compound and a derivative of a butadiene dimer are subjected to an addition reaction over a rhodium compound. The 1,3-conjugated diene compound adds to the derivative in a molar ratio of 1:1. The derivative may be an ester, ether or alcohol. Said derivative is obtained either by reacting a carboxylic acid, an alcohol or a phenol with a butadiene over a palladium catalyst or by hydrolyzing the reaction product.

Abstract: Flame resistance is imparted to polyamide resins by the process which comprises melting said polyamide at a temperature between the softening point of the polyamide and 250.degree.C, and adding a flameproofing quantity of a flameproofing agent to said melt, and thereafter solidifying said melt whereby said polyamide is flameproofed to an extent of UL-94, said flame proofing agent being selected from the group consisting of ##EQU1## wherein R is the same or different and represents hydrogen or lower alkyl, formamide and mixtures thereof.

Abstract: N.sup.2 -dansyl-L-arginine esters and amides having the formula ##SPC1##Or the acid addition salts thereof with a pharmaceutically acceptable acid, wherein R is selected from the group consisting of(1) alkoxy, alkenyloxy, alkynyloxy, and cycloalkoxy, respectively, containing not more than 10 carbon atoms, aralkyloxy of not more than 15 carbon atoms, tetrahydrofurfuryloxy, and alkoxy of not more than 10 carbon atoms substituted with an alkoxy group of not more than 10 carbon atoms, halogen or nitro; ##EQU1## wherein R.sub.1 and R.sub.

Abstract: A graft copolymer is provided which is characterized by excellent gas impermeability, transparency and impact strength, as well as good flowability, and hence good molding workability, by copolymerizing an olefinically unsaturated nitrile with an alkyl vinyl ether in the presence of a rubbery polymer, which contains at least 50% by weight of a conjugated diene; said olefinically unsaturated nitrile being present in an amount of from 60 to 95% by weight, based on the total weight of said olefinically unsaturated nitrile and said alkyl vinyl ether; and wherein said olefinically unsaturated nitrile and said alkyl ether are present in an amount of from 3 to 50 times by weight the quantity of said rubbery polymer.

Abstract: L-cysteine and derivatives thereof of the formula (I): ##EQU1## wherein R is selected from the group consisting of hydrogen, C.sub.1 -C.sub.15 alkyl, C.sub.2 -C.sub.15 alkenyl, C.sub.6 -C.sub.15 aryl, C.sub.7 -C.sub.15 aralkyl, are prepared by a process which comprises reacting .beta.-substituted L-alanine having the formula (II): ##EQU2## wherein X is selected from the group consisting of halogen, --OR' and --SR'; wherein R' is selected from the group consisting of hydrogen, allyl, C.sub.1 -C.sub.15 alkyl, C.sub.6 -C.sub.15 aryl and C.sub.7 -C.sub.15 aralkyl, with a thiol, or hydrogen sulfide, of the formula (III):r -- sh (iii)wherein R is as defined above, ammonium hydrosulfide of a metal hydrosulfide of the formula (IV):r -- s --y (iv)wherein R is hydrogen, and Y is ammonium or a metal, in an aqueous medium, in the presence of cysteine desulfhydrase.

Abstract: Exhaust gas containing a halohydrocarbon having 1 - 10 carbon atoms and molecular oxygen is contacted with chromium oxide or a boehmite supported platinum at an elevated temperature to decompose the halohydrocarbon to carbon dioxide, water, hydrogen halide and free halogen.

Abstract: An oxyquinophthalone coloring material having the general formula ##SPC1##Wherein X represents chlorine or bromine atom and Y.sub.1, Y.sub.2 and Y.sub.3 represent respectively hydrogen, chlorine, bromine, methyl, ethyl, methoxy or ethoxy group, at least one of Y.sub.1, Y.sub.2 and Y.sub.3 being chlorine or bromine and one of Y.sub.1, Y.sub.2 and Y.sub.3 being methyl, ethyl, methoxy and ethoxy group.

Abstract: A polymer composition, which comprises a polymer containing a quinophthalone pigment having the formula ##SPC1##Wherein the quinoline ring can have a substituent selected from the group consisting of halogen, lower alkyl, lower alkoxy, and carboxyl, and the ring A is a benzene ring or a naphthalene ring which can have a substituent selected from the group consisting of halogen, and --COW wherein W represents hydroxyl, lower alkoxyl or amino; and 0.005-5% by weight of a piperidine type or imidazolidine type ultraviolet absorbing agent.

Abstract: A prilled ammonium nitrate containing 2 to 5 percent by weight water obtained by prilling an aqueous solution of 93 to 98 percent by weight ammonium nitrate is dried by: lowering the drying temperature of the ammonium nitrate to a temperature less than the III--IV crystalline transition temperature of ammonium nitrate at least once when the water content of the prilled ammonium nitrate is 0.3 to 1.5 percent by weight in the drying step; further drying at a temperature higher than the III--IV transition temperature; and adding an anti-caking agent to the dried prilled ammonium nitrate. The dried, prilled ammonium nitrate obtained is useful as an ammonium nitrate fuel oil explosive.