Abstract: The present invention concerns benzophenone compounds of the formula: ##SPC1##WhereinR.sub.1, r.sub.2, r.sub.3 and R.sub.4 are hydrogen or substituents, e.g. alkyl,X is a mono-, di- or trivalent radical andn is an integer 1, 2 or 3.The compounds are useful as U.V. stabilizers for, for example, plastics materials.

Abstract: Disclosed herein is a method which provides substantially zero acid number polytetramethylene ether glycol thus making it possible to regard polytetramethylene ether glycol as a fungible commodity. The improvement is achieved by complete removal of a trace impurity, believed to be n-butyl aldehyde, from dry tetrahydrofuran, by contact with molecular sieves of a particular definition, prior to the polymerization of the tetrahydrofuran in the production of polytetramethylene ether glycol.

Abstract: Viscous polybutenes of number average molecular weight (M.sub.n) in the range of about 300 to about 3,000 have improved reactivity with intramolecular anhydrides of unsaturated aliphatic dicarboxylic acids when reacted in the presence of rather small amounts, i.e., 5 to 200 ppm, of inorganic halogen preferably chlorine and/or bromine containing compounds. Use of such halogen containing compounds in the addition reaction of polybutene with said unsaturated anhydrides can reduce formation of undesired tarry product resulting from polymerization and/or thermal decomposition of the unsaturated anhydrides.

Abstract: The invention relates to new derivatives of 3-oxo-2,3-dihydro-1,4-benzoxazine corresponding to the general formula ##SPC1##In whichR.sub.1 is selected from the group consisting of the hydrogen atom and a lower alkyl group;R.sub.2, r.sub.3 and R.sub.4 which are identical or different, are selected from the group consisting of the hydrogen atom, a halogen atom, a nitro group, a lower alkyl group, a lower alkoxy group and R.sub.4 may be an allyl group;R.sub.5 is selected from the group consisting of the hydrogen atom and an acyl group, preferably acetyl. These derivatives can be used for therapeutic purposes, more especially as analgesics and anti-oedematous agents.

Abstract: 3-Furyl beta-chalcogenalkyl sulfides having the structure: ##SPC1##Wherein X is a chalcogen selected from the group consisting of oxygen and sulfur; R.sub.2 and R.sub.3 are each selected from the group consisting of methyl and hydrogen, at least one of R.sub.2 or R.sub.3 being methyl; and R.sub.4 and R.sub.5, taken separately, are each methyl, or R.sub.4 and R.sub.

Abstract: Amides of phosphorus-containing thioacids are reacted with sulphenyl halides to give phosphorus-containing thioacid amides in which one or more of the nitrogen atoms carries a substituent attached through a sulphur atom. These substituted amides are inhibitors of premature vulcanisation in rubbers. The most effective compounds carry a secondary alkylthio or cycloalkylthio on each nitrogen atom.

Abstract: Tetrahydrofurans are produced by the codimerization of an alkene oxide with an alkene in the presence of catalytic amounts of a Group VIII noble transition metal compound and an iodide promoter.

Abstract: Process for direct alpha to X phase conversion of metal-free phthalocyanine. In this process, the alpha polymorph of a metal-free phthalocyanine pigment can be directly converted to the X form by depositing the alpha form of the pigment on a suitable substrate followed by in situ conversion of this deposit by controlled heating. The X form of metal-free phthalocyanine is known to possess good electrophotographic speed, and, thus, can be used either alone or in combination with other photoconductive materials in electrophotography.

Abstract: Alkylpyridines such as 2-picoline and 4-picoline are prepared by contacting acetaldehyde and ammonia in a gaseous phase with a phosphate of two metals such as cobalt magnesium phosphate, cobalt aluminum phosphate or lead aluminum phosphate, impregnated with an aqueous solution of phosphoric acid or ammonium phosphate, as a catalyst, at a temperature of 350.degree. to 500.degree.C and a space velocity of 200 to 2,000 Hr.sup.-.sup.1. Silica-alumina and a promoter can be added to the catalyst. The impregnated catalyst has a higher catalytic activity and holds the initial high activity even after a considerable number of regeneration.

Abstract: The preparation of citraconic anhydride by catalytic vapor phase oxidation of methyl butanols and methyl butenols.

Abstract: A process for preparing a substituted or unsubstituted dihydrofuran from a substituted or unsubstituted butadiene monoxide which comprises contacting the butadiene monoxide with a catalyst comprising a hydrogen halide selected from the group consisting of hydrogen iodide or bromide and a homogeneous transition metal compound in an organic solvent under conditions effective to convert the butadiene monoxide to the dihydrofuran and wherein said transition metal compound is effective to accelerate said conversion. Preferably the transition metal is iron, manganese, cobalt, molybdenum, vanadium, copper, or nickel.

Abstract: A process for the preparation of substantially hexagonal crystals of metal-free alpha phthalocyanine, said crystals ranging in size from about 1 micron to about 75 microns is disclosed. Photoelectrophoretic and manifold processes employing said crystals are also disclosed.

Abstract: Amides of phosphorus-containing acids are reacted with sulphenyl halides to give phosphorus-containing acid amides in which one or more of the nitrogen atoms carries the appropriate substitutent attached through a sulphur atom. These substituted amides are inhibitors of premature vulcanisation in rubbers. The most effective compounds are arylamides substituted by secondary alkylthio groups.

Abstract: New heterocyclic compound useful as odor-modifying agent for manufacturing perfumes, perfumed products, natural or synthetic essential oils, and as flavor-modifying agent for the manufacture of artificial flavors or for flavoring foodstuffs, animal feeds, beverages, pharmaceutical preparations and tobacco products.Process for preparing said heterocyclic compound.

Abstract: 2,3-DIHYDRO-1,3-OXAZINEDIONES-(2,4) ARE PRODUCED IN ONE STEP WITH GOOD YIELDS AND AT LOW REACTION TIMES BY REACTING A CORRESPONDING 1,3-DIOXINONE-(4) WITH AN APPROPRIATE ISOCYANATE AT TEMPERATURES OF E.G., 80.degree. TO 200.degree.C.Certain novel oxazinediones, useful as intermediates for making herbicides, are produced thereby.

Abstract: Furan Sulfur compounds of the formula ##SPC1##Wherein n is 1 and R is methyl, ethyl, propyl, 1-methyl-prop-1-en-1-yl, 2-methyl-prop-1-en-1-yl, furyl or hydrogen; and wherein n is 2 and R is methyl which are useful as flavor additives for foodstuffs and beverages.

Abstract: A process of converting 2,3,4,5-tetrahydropyrimidines containing at least 1 hydrogen in the 2-position and at least one methylene group in the 4-position to corresponding pyridines which comprises heating said tetrahydropyrimidines to a temperature sufficiently high to remove ammonia and hydrogen so as to form said pyridines.

Abstract: A method of preparing citraconic acid and derivatives thereof comprising reacting methylsuccinic acid and derivatives thereof (such as an acid halide, an acid anhydride, a monoester and a diester) with chlorine in the absence of or in the presence of a catalyst at a temperature ranging from about 100.degree. to 500.degree.C.

Abstract: A process is provided for the preparation of 2-chloropyridine by the liquid phase hydrogenolysis of 2,6-dichloropyridine in the presence of a selected metal and a strong base.

Abstract: Furan Sulfur compounds of the formula ##SPC1##Wherein when n is 0, R.sub.1 and R.sub.2 are methyl; when n is 1, R.sub.1 and R.sub.2 are methyl or R.sub.1 is hydrogen and R.sub.2 is 5-methylfuryl; and when n is 2, R.sub.1 and R.sub.2 are hydrogen which are useful as flavor additives to foodstuffs and beverages.