The invention relates to a novel process for the preparation of certain pharmaceutically active pyridyl compounds.

An improved process for preparing arylethanoldiamines is described. Compounds of this type are known to be useful as agonists at a typical beta-adrenoceptors (also known as beta-3-adrenoceptors).

A process for the preparation of coated polymer particles containing superparamagnetic crystals, said process comprising reacting porous, surface-functionalized, superparamagnetic crystal-containing polymer particles of diameter 0.5 to 1.8 .mu.m with at least one polyisocyanate and at least one diol or at least one epoxide.

The present invention provides an improved process for the preparation of .alpha.-polymorphic eletriptan hydrobromide.

There is described the separation of aliphatically-unsaturated hydrocarbons from gaseous mixtures by the combined use of flooded-cell, liquid barrier permeation and metal complexing techniques. The liquid barrier is disposed as a continuous, distinct or separate liquid phase in contact with a film membrane composite, and the barrier contains complex-forming metal ions in aqueous solution. The film is composed of a hydrophobic membrane having a hydrophilic surface on its feed inlet side. The hydr...

A method for the preparation of X-form metal-free phthalocyanine which comprises rapidly sublimating any metal-free phthalocyanine polymorph under a pressure of about 1 to about 90 Torr is disclosed.

There is described the separation of aliphatically-unsaturated hydrocarbons from mixtures by the combined use of liquid barrier permeation and metal complexing techniques. The liquid barrier is within a hydrophilic film membrane, and the barrier contains complex-forming metal ions in aqueous solution. The metal ions may be, for example, noble metal, nickel, mercurous, cuprous or other metal ions, and mixtures of these metal ions, with or without other cations, may be used. The separation of ethy...

There is described the separation of aliphatically unsaturated hydrocarbons from gaseous mixtures by the combined use of liquid barrier permeation and metal complexing techniques. The liquid barrier is present essentially in a solid matrix that is a film membrane or is in contact with a film membrane, and the barrier contains complex-forming metal ions in aqueous solution. The liquid barrier is in contact with a relatively non-volatile, hygroscopic agent that may be in solution in the liquid bar...

Fabrics containing fibers of selected polymers prepared from bis(4-aminocyclohexyl)methane and linear aliphatic dicarboxylic acids, bis(4-isothiocyanatocyclohexyl)methane or bis(4-isocyanatocyclohexyl)methane develop improved liveliness upon treatment with chloroform.

Conjugated dienes are polymerized by a new catalyst system which permits control of the molecular weight and gives a more easily processed product. This catalyst system comprises (1) a sodium hydrocarbon compound having one to 10 carbon atoms in which the hydrocarbon portion is a primary, secondary or tertiary alkyl or an aryl radical, and (2) potassium hydroxide or preferably lithium hydroxide. The diene polymers produced by this process have controllable molecular weights in the range of 5,000...