A method for producing M.sub.nB.sub.12H.sub.12, wherein M is a metal or ammonium cation and n is one or two, by combining a metal borohydride and XBH.sub.3; wherein X is a substituted amine; a substituted phosphine; or tetrahydrofuran.

A preventive or therapeutic agent for asthma, comprising HGF or its salt as an active ingredient.

High molecular weight linear thermoplastic elastomeric polyurethanes of I.V. 0.9-2 are prepared by reaction in solution. A hydroxyl-terminated prepolymer and a diol chain extender are reacted, in the solvent, with a small excess of diisocyanate, until the --NCO content becomes constant, then a diol chain extender in amount equivalent to the remaining --NCO; reaction is continued, and then terminated after the high I.V. is attained.

Disclosed are antirheumatic compositions containing therapeutically effective amounts of dimethyl aminophenazone and an alkali metal salt of 1-phenyl-4-n-butyl-3,5-dioxopyrazolidine in aqueous solution. The compositions can also contain effective amounts of Lidocaine and Dexamethasone. The compositions described are prepared by bringing together under agitated flow conditions dimethyl aminophenazone with water which contains an alkali metal salt of 1-phenyl-4-n-butyl-3,5-dioxopyrazolidine as a s...

Process for the ring opening polymerisation of cyclomonoolefins by contacting the cyclomonoolefins with a catalyst comsisting of A. a reaction product of a tungsten or tantalum halide with an acetal and B. an organo compound of a metal of groups Ia to IVa of the Periodic Table The molar ratio of tungsten: metal of groups Ia to IVa being from 1:03 to 1:10 and the molar ratio of tantalum: metal of groups Ia to IVa being from 1:1 to 1:10.

Phosphorus values are recovered from phosphate crystal mother liquor by contacting the liquor with finely divided calcium salts at elevated temperatures to precipitate hydrated octacalcium phosphate. Ca/P input is specific.

A process for the preparation of oligoribonucleotides of definend predetermined sequence containing the natural 3'-5'-internucleotide linkage, which comprises reacting an oligonucleotide with a monofunctional substrate in the presence of polynucleotide phosphorylase, to form a product which is longer, by one monomeric unit than the initial oligonucleotide, isolating the product from the reaction mixture, removing the blocking agent and repeating the process a desired number of times, adding by e...

Process for the preparation of ammelides from guanidine, hydrocarbon substituted guanidines or acid salts thereof in which the guanidine compounds are heated with biuret in an inert organic solvent in the presence of a basic catalyst.

The invention is concerned with a new process for preparing 7-hydroxy dihydrocitronellal. This process consists in causing citronellal to react with a secondary amine, in transforming the derivative obtained, by treatment in aqueous acid medium, into the immonium of the citronellal, which is hydrated, then in hydrolysing the immonium of the hydroxycitronellal thus formed into 7-hydroxy dihydrocitronellal, all these operations being effected in the liquid base.

A process for the preparation of aromatic compounds is set forth which involves contacting a feed consisting essentially of C.sub.2 -C.sub.4 paraffins and/or olefins with a crystalline aluminosilicate of the ZSM-5 type and recovering the aromatics produced. The described process can be carried out in the absence of a hydrogenation/dehydrogenation component and in the absence of added hydrogen.