HOE 90/H 002 Self-extinguishing polyurethanes of the disclosure: Self-extinguishing polyurethanes are obtained by stepwise polyaddition of diisocyanates or polyisocyanates with polyols with the addition of a flameproofing agent comprising a phosphorus component and a nitrogen component as synergists. While the phosphorus component used is an ammonium polyphosphate which is sparingly soluble in wat...

Novel advantageous vehicle gas mixtures contain two or more components, at least one of which is a partly fluorinated lower alkane, and may be used in medical preparations.

A BLACK MANGANESE/IRON OXIDE PIGMENT, A PROCESS FOR ITS PRODUCTION AND ITS USE A black manganese/iron oxide pigment having a spinel structure and having the composition MnxFe3-xO4 wherein x has a value from 0.1 to 0.9? is prepared by the steps: a) oxidizing iron(II) salts or mixtures of iron(II) salts and manganese(II) salts, in solution or after reaction with alkaline precipitants, with manganese...

Trialkanolamine polyethers, obtainable by condensing tri-alkanolamine(s) in the presence of (hypo)phosphorus acid, are useful as demulsifiers in 0/W emulsion. The trialkanolamines are of formula (I), where R1-R3 = 1,2-(2-4C)alkylene. -

PCT No. PCT/DE91/00079 Sec. 371 Date Sep. 25, 1991 Sec. 102(e) Date Sep. 25, 1991 PCT Filed Jan. 26, 1991 PCT Pub. No. WO91/11545 PCT Pub. Date Aug. 8, 1991.Highly wear-resistant sliding bearings with good sliding properties are difficult to manufacture by electrochemical deposition of the sliding alloy, because the corresponding electrolyte solutions are unstable. Conventional sliding alloys are ...

The invention relates to an annular seal for the drive assembly of a wet and dry vacuum cleaner, this assembly including an electric motor, a fan and a support plate separating them. The seal 11 includes a U-shaped groove 12, the wings 13, 14 of the groove 12 fasten, in the assembled condition, onto the collar 10 of the support plate 6, there is formed, on the external surface 13 of the seal 11 at...

A combination section consisting of a base section (1) and a covering section (2). The covering section (2) is of an anti-friction material having a coefficient of expansion deviating from that of the material of the base section (1), and is divided between fastening points into partial lengths (4). The partial lengths (4) are interconnected by deformable bridges (6). This makes it possible for th...

The quick-action coupling for a forging and transporting manipulator has a tool holder with tool, e.g. tongs, gripping and moving the work, and a drive mechanism for the tool. The coupling (4) is situated between the tool holder (3) and the tool (5), and forms a positive and purely mechanical drive coupling ebtween them. Pref the coupling is in two halves (9,10), and (9), on the tool holder, and t...