A metal hardening process including a cooling of the metal to a temperature in the range -80.degree. to -120.degree.C prior to tempering. The cooling is preferably effected in a liquid bath cooled by a liquefied gas.

Synthetic textile materials, such as polyamides, polyesters, polyacrylonitrile, polyvinyl alcohol, and cellulose triacetate, are treated with an ester containing on average, at least two mercaptan groups per molecule, which is then cured, in order to impart a better handle and improved antisoil properties. Typically, the ester is prepared by the reaction of A. a compound containing at least two carboxylic acid groups B. a compound containing at least two alcoholic hydroxyl groups and, optionally...

A bale of tobacco is conditioned by being fed towards a straight hollow probe which extends into the advancing front face of the bale and passes moist air or steam through a layer of the front face while tobacco is continuously removed from the front face.

Tension in a textile strand being unwound from a traverse-wound package is equalized by passing the strand sequentially about portions of a plurality of rolls near the package, a friction-free guide, and a pair of variably spaced rolls whose spacing controls braking of the package.

A coated paperboard of improved physical strength properties is provided where at least one surface of a paperboard, preferably containing a major proportion of low strength cellulosic fibres, is coated with an aqueous dispersion, the solids content of which comprises a water-soluble lignosulphonate, a non-reactive hydrophobic waxy material and, optionally, a high molecular weight polysaccharide. The improved physical strength characteristics are retained to a considerable extent even under trop...

This invention relates to the controlled application of an active chemical to the soil through the use of a carrier or substratum in the form of an active chemical impregnated string, web, or sheet throughout the extent of which the chemicals are made available to the leaching action of rain and surface waters for migration to the soil upon which the coated carrier and active chemical is deposited.

Hypercholesteremia in humans is treated by daily administrations of (a) para-chlorophenoxyisobutyric acid or a simple functional derivative thereof which, under the influence of substances present in the gastric juices, serum or tissues of a human being, acts as a source of that acid and (b) a solid non-toxic anion exchange resin in the weight ratio of 1:2 to 1:20. The resin is a dextran-epichlorohydrin polymer in which 6-50 percent of the hydroxyl groups have been replaced by lower dialkylamino...

Compounds of the formula 1 ##SPC1## And the pharmacologically acceptable acid addition salts thereof, wherein R.sub.1 is hydrogen, lower-alkyl, lower alkoxy, halogen or --CF.sub.3 ; R.sub.2 is hydrogen, lower-alkyl, lower-alkoxy, halogen or --CF.sub.3 and R.sub.3 is lower alkyl are prepared in pharmacologically acceptable formulations are used treating hypertension in warm-blooded, hypertensive animals free of helminthic infestations by administration of such compounds and compositions thereof a...

Leather having improved resistance to shrinkage on exposure to high temperatures as occasioned by flash fires is produced by impregnating leather with a salt of a metal selected from the transition metals of the fourth and fifth periods of the Periodic Table and magnesium, such as nickel, chromium, cobalt, manganese and magnesium. Treatment of the impregnated leather with a linear addition polymer of trifluorovinyl chloride and treatment of impregnated or unimpregnated leather with microwaves re...

The process of removing contaminants from a liquid medium, comprising the steps of A. contacting a quantity of the contaminated liquid medium with a solvent regenerable first adsorbent during a first phase, that adsorbent having an affinity for the contaminants and a volume which are insufficiently high to produce a desired degree of purification during the first phase, whereby a fraction of the contaminants is adsorbed by the first adsorbent and a partially purified effluent of the medium is pr...