Corrosivity of non-aqueous solutions of copper ions useful in olefin separation processes is greatly reduced by addition of from about 0.5 to about 15 percent by weight of a metal salt of an ortho-hydroxy aromatic carboxylic acid to such solutions. BACKGROUND OF THE INVENTION It has long been known that olefinically unsaturated hydrocarbons react with aqueous and non-aqueous solutions of cuprous salts to form cuprous-olefin complexes. This general reaction is employed commercially for the separa...

This invention relates to the production of saccharase inhibitors in which a polysaccharidic or oligosaccharidic amylase inhibitor is hydrolytically degraded either enzymatically or by acid hydrolysis. The invention also relates to the use of said saccharase inhibitors in pharmaceutically acceptable therapeutic compositions in the treatment of conditions indicating adiposity, hyperlipaemia (atherosclerosis), diabetes, pre-diabetes, caries and the like.

Novel procidins effective for healing or preventing ulcer are produced and accumulated in the cultured product of a novel strain Streptomyces procidinanus.

A method of treating an aqueous system to inhibit the corrosion of metals in contact therewith and/or inhibit the deposition of scale therefrom comprising adding to the aqueous system a minor proportion of a compound of the formula: ##STR1## wherein n is 0 or 1 and when n is O, R.sub.3 and R.sub.4 are the same or different and each is hydrogen, an alkyl group having from 1 to 4 carbon atoms, a benzyl, allyl, --CH.sub.2 PO.sub.3 H.sub.2 -- or --CHCOOH.CH.sub.2 COOH group or a group of formula ##S...

Certain C-substituted-hydroxynaphthalenesulfonic acids, salts and ureides useful as complement inhibitors.

As improved corrosion inhibitors, reaction products of alkylene oxides and blocked phenols wherein two substituents of the phenol are non-oxyalkylatable, saturated tertiary-amino alkylene groups, and acid-stable salts of these products.

Addition compounds of sulfur dioxide and Schiff bases from primary aliphatic or araliphatic amines and aromatic aldehydes can be used for the sealing of the surface of phosphated mild steel. As a result of this the corrosion resistance of the steel and the adhesion of paint coatings on the treated steel are increased substantially. The addition compounds may have three different structures depending on the components used. They can be prepared easily by passing a stream of SO.sub.2 through the s...

C-substituted trisulfonic acids, acid ureides, oxalyl amides and salts thereof useful as complement inhibitors.

A device, being one of a multiple of identical units adapted to be strung on a lane-separating cable for swimming pools, and being formed with deflecting and turbulence-inhibiting baffles or vanes, enclosed within an annular band or shell.

Substituted-hydroxy-naphthalenedisulfonic acids, acid ureides and salts thereof useful as complement inhibitors.