There are disclosed compounds of the formula in which R<1> is an alkenyl or alkynyl group optionally substituted with an optionally substituted phenyl group and containing from 5 to 30 carbon atoms, and R<3>, R<4> and R<5> are each selected from hydrogen, carboxyl, C2-5 alkoxycarbonyl, C1-4 alkyl, C1-4 alkoxy, hydroxyl, optionally protected tetrazolyl, halo, trifluoromethyl, nitrile, nitro...

A dicing film to support semiconductor wafers as they are diced into individual chips comprises a support film (e.g., of thermoplastic polymer), a release layer on one side of the film, and a pattern of conductive adhesive attached to the release layer for bonding to the wafer or wafers. The release layer allows for separation of the chip/conductive adhesive combination from the support film. Pref...

The machine tool comprises a feed-in device formed by two guide rails (1) disposed at a variable distance from each other and rotatable in a vertical plane. A control component (7), which is spring-loaded and vertically pivotable, is also fitted on each guide rail and arranged to adopt an ejection position. A vertically movable grip device holds an object during processing, and then moves it to th...

The internal combustion engine has a piston which reciprocates in its cylinder without touching the walls in the hot area. The seal between the piston and the cylinder wall is a scavenging and/or charge air current directed against the work pressure. The engine has no cooling.

A substrate which is suitable for coliform bacteria is melted and mixed with the water to be tested. The mixture is left in a suitable environment for 24 hours. The number of red or blue marks of about 1mm size which appears in counted and compared with a table of values. Thus the quality of the water is assessed.

The combustion unit comprises a feed passage leading to a chamber containing a hearth and a further lower chamber for ash and slag. The passage runs horizontally in line with the hearth chamber. The fuel is fed to the hearth while at the same time the ash and slag are forced out of it towards the ash chamber.

Paper is prepd. from a slurry of fibres of high lignin content pulp including treating the slurry with 15-25 wt.%, based on oven wt. fibres, soln. of Na sulphite, Na sulphide and Na carbonate having Na sulphite:Na sulphide mole ratio 0.1-2.0:1 at at least 60 deg.C., atmospheric press., pH at least 10, for 10-60 min.. - The paper is made by (a) treating a high lignin content slurry having a predete...

The invention applies to a combined venturi and exhalation valve aggregate, that has a main section (817) with a channel (818), which stretches axially and builds a central airway opening (823), which is intended to be coupled to the patient. A venturi section (826) is displaceably affixed in the channel (818) inside the main section (817) for movement between the first and second positions. The m...

Anti-theft device for cars.It is considered desirable for an anti-theft device to indicate theft or unauthorized driving.This is provided by an arm (10) with a rotating head (01) fixed to a spindle (02) on the windscreen or back window and that the arm is adjustable in a plane parallel to the window between a horizontal position along the windows upper edge and an active position; in both position...

Compsn. includes an amphoteric surface active substance combined with an unsaturated fatty acid, triglyceridester of a vegetable fatty acid, a triglyceride mixture of satd. vegetable oils and an allantoin salt. THese are combined with vitamin B5 for dry and allergy-sensitive skins.