Abstract: There is disclosed a method of forming a urea adduct complex by reacting an aluminum hydrogen phosphate complex which is normally unstable in solution at a pH greater than 2.5 with sufficient urea that no precipitation of alumina occurs on addition of ammonia, and adjusting the pH of the resultant urea adduct complex with ammonia to a value of from 2.5 to 10. The urea adduct complexes of the invention are fire retardants and fire quenching agents and are useful as agricultural adjuvants.

Abstract: Adamantane compound is obtained by isomerizing a tricyclic saturated hydrocarbon having 10 to 14 carbon atoms in the presence of an X- or Y-type zeolite catalyst subjected to ion exchange with one or two kinds of metal ions selected from the group consisting of ions of rare earth metals, calcium and magnesium. The preferred catalyst is a catalyst which is further loaded with 1 to 4 kinds of metals selected from the group consisting of germanium, platinum, rhenium, nickel, cobalt, copper, iron ruthenium and rhodium. This isomerization reaction is preferably carried out in the presence of hydrogen gas.

Abstract: Hydrocarbons are reacted with a silver tri-halogenomethane sulfonate of the formula ##EQU1## wherein X, Y and Z each represents a halogen atom, to form the corresponding complexes, and then the thus formed complexes are decomposed to selectively separate the desired hydrocarbon components. The used silver tri-halogenomethane sulfonate also is recovered by the decomposition of the complexes.

Abstract: A process for the separation of the para-isomer from a hydrocarbon feed mixture comprising at least two bi-alkyl substituted monocyclic aromatic isomers, including the para-isomer, said isomers having from 8 to about 18 carbon atoms per molecule using a specially prepared adsorbent comprising a Y zeolite containing at the exchangeable cationic sites one or more selected cations. The feed mixture is passed through a bed of the adsorbent wherein the para-isomer is preferentially adsorbed within the adsorbent and thereafter recovered from the adsorbent. Novel feature of the process is the use of the specially prepared adsorbents which have faster adsorption-desorption rates for the desired para-isomer.

Abstract: An adsorptive separation process for separating ethylbenzene from a feed mixture comprising ethylbenzene and at least one xylene isomer, which process comprises contacting the feed mixture with a crystalline aluminosilicate adsorbent comprising type X structured zeolite containing at the exchangeable cationic sites at least one cation selected from the group consisting of cations of elements of Group I-A of the Periodic Table of Elements to effect the selective adsorption of ethylbenzene. The ethylbenzene adsorbed by the adsorbent is thereafter recovered as a purified product. The process can be either in the liquid or vapor phase.

Abstract: A process for separating the para-isomer from a feed mixture containing at least two bi-alkyl substituted monocyclis aromatic isomers, including the para isomer, said isomers having from 8 to about 18 carbon atoms per molecule which process comprises contacting said mixture with an adsorbent prepared by the steps of: contacting a base material comprising type X or type Y zeolite with a fluoride-containing aqueous sodium hydroxide solution at first ion exchange conditions to effect the addition of sodium to and the extraction of alumina from said base material; treating the sodium-exchanged base material at second ion exchange conditions to effect the essentially complete exchange of sodium cations; and, drying the material at conditions to reduce the LOI at 900.degree. C. to less than about 10 wt. % thereby selectively adsorbing at adsorption conditions said para isomer.

Abstract: Isopentene is produced in a high yield by a method wherein disproportionation of a hydrocarbon mixture containing n-butene and isobutene is carried out by bringing, at 200.degree. to 350.degree.C, the hydrocarbon mixture into contact with a composite catalyst which has been prepared by depositing a barium or strontium compound and a silver compound onto a carrier material consisting of an activated high purity alumina carrier to produce a precursory composite catalyst, calcining the precursory composite catalyst at 300.degree. to 900.degree.C, and isolating the resulted isopentene from the reaction mixture.

Abstract: Waste synthetic high polymer, especially those containing polyvinyl chloride and the like chlorine-containing synthetic resins are heated at 200.degree.-500.degree.C to thereby form a hot molten bath of fusible materials contained in the waste resin mixture and the chlorine-containing resins are effectively decomposed in the molten bath kept at the temperature of 200.degree.-500.degree.C with the generation of hydrogen chloride gas which can be recovered as hydrochloric acid.

Abstract: A continuous process for the separation of a mixed xylene isomer feedstock into o - and p - isomer fractions by feeding the mixed xylene isomer feedstock to a fractional distillation column in which a fraction containing a major portion of the o-xylene in the feedstock is removed from the bottom of the column and further fractionated to recover substantially pure o-xylene and a major portion of the p-xylene in the feedstock is removed as an overhead fraction, the p-xylene being removed from the overhead fraction by crystallisation and the mother liquor therefrom being recycled to the feed after contact with an isomerisation catalyst the improvement which comprises contacting the mother liquor remaining after crystallization of p-xylene, together with additional mother liquor, with a substrate active for the selective adsorption of p-xylene and thereafter recovering the adsorbed p-xylene from said substrate, the amount of mother liquor added being substantially equal to the quantity of p-xylene recovered from

Abstract: A process for separating dimethyl naphthalenes having a component comprising 2,6-dimethyl naphthalene in the form of complexes with a complex-forming compound, which comprises contacting a dimethyl naphthalene isomer mixture comprising at least 2,6-dimethyl naphthalene or a hydrocarbon mixture containing said dimethyl naphthalene isomer mixture with a complex-forming compound selected from the group consisting of nitro compounds of 2,6-naphthalene dicarboxylic acid, trimellitic anhydride and 2-chloro-5-nitrobenzoic acid, thereby to form a mixture of complexes of the dimethyl naphthalenes with said complex-forming compound having a main component comprising a complex of 2,6-dimethyl naphthalene with the complex-forming compound, and separating the complexes in the solid state from the reaction mixture.

Abstract: Polyenes are synthesized from unsaturated materials having allylic hydroxyl groups, which react with imidosulfides to produce sulfones. Removal of the sulfone group, e.g. by reaction with alkyllithium and iodine, results in compounds in which the allylic carbons are joined by a double bond. The reactions take place easily over wide temperature ranges. The method is particularly advantageous in the synthesis of carotenoids from polyene alcohols, being much simpler and easier to use than previous carotenoid syntheses.

Abstract: In a process for producing alkylaromatics by halogenating a paraffin and reacting the halogenated paraffin with an aromatic hydrocarbon, the rate of halogenation is improved by treating the n-paraffin to selectively remove oxygen-containing hydrocarbonaceous compounds from the n-paraffin with a sorbent selective for such oxygen-containing compounds, and subsequently halogenating the treated n-parffin. The improvement is particularly useful in producing alkylaromatic hydrocarbons from monocyclic aromatic compounds and n-paraffins.

Abstract: A solid complex of a herbicidal bipyridylium salt in combination with urea or thiourea having the formula:X(A).sub.n (H.sub.2 O).sub.mWherein X represents the bipyridylium salt, A represents urea or thiourea, n is 1, 2 or 4, and m is 0 to 4, its preparation and use are disclosed.