New ethylenic ketones of the general formula wherein R represents a 2,6,6- trimethylcyclohex-1-enyl radical or a 2,6-dimethylhepta-1,5-dienyl radical and R1 represents a straight- or branched-chain alkyl group containing from 1 to 4 carbon atoms are useful in the synthesis of vitamin A and lycopene.

1. Composition being photopolymerizable and hardenable under the effect of an ultraviolet photon radiation characterized by comprising : - at least one reactive polymer the chemical formula of which bears at least one thiirane ring or presents an ethylenic unsaturation, - at least one vinylic monomer the chemical formula of which bears a thiirane ring in case said reactive polymer itself does not ...

PCT No. PCT/DE80/00077 Sec. 371 Date Jan. 23, 1981 Sec. 102(e) Date Jan. 21, 1981 PCT Filed May 22, 1980 PCT Pub. No. WO80/02529 PCT Pub. Date Nov. 27, 1980.A fastening device by which a thermoplastic cover may be fixed to a tubular component. The cover fits tightly into the tubular component which is provided in the region of the cover with bores through which a lost pin is pressed after heating ...

In pneumatic low pressure dust extraction apparatus, filter bags are cleaned by reverse flow of air. Each cleaning operation includes a first shock phase of short duration (not longer than 0.05 sec) but at high flow intensity by which accumulated layers of dust are thrown off the outside of the bag, followed by a rinsing phase of greater duration (not longer than 1 sec e.g. 0.20-0.30 sec) but at l...

To securely avoid any gap formation between a ring mount barrier and adjoining parts of the floor of an articulated vehicle such as a bus, a safety cover construction is carried by a turntable coupling for supporting the ring mount barrier. The safety cover construction has a U-shaped transverse cross-section defining a receiving space for receiving a lower end of the ring mount barrier with upper...

The invention provides cleaning and detergent compositions which contain about 0.2 to 5 weight % of at least one compound of the general formula (I) in which R stands for a hydrogen atom or a methyl group and R1 stands for a hydrogen atom or an alkali metal or NH4-ion.

The container is intended for making rods of a powder-like metal by means of hot extrusion, the rods being used preferably for manufacturing cutting tools, press tools as well as high safety construction parts. The container comprises a tubular casing (1), front and rear caps (3 and 4), a guiding cone (5) and at least one profiling element placed on the side of one of the said caps. The profiling ...

For mounting an exhaust gas measurement probe (20) on an exhaust gas pipe (10), a mounting device having a base plate (27) to be secured on the pipe is proposed, on which plate a guide piece (17) is fitted by means of a bearing bush (40) and a hinge piece (66), this guide piece (17) being capable both of moving radially relative to the pipe and also swivelling in a plane perpendicular to the longi...

Gas turbines for producing mechanical and electrical power without polluting the atmosphere are fueled by an improved clean fuel gas having a heat of combustion of preferably about 70-100 BTU/SCF. Fuel-gas is produced by the partial oxidation of a hydrocarbonaceous fuel in a free-flow non-catalytic fuel gas generator. Feedstock to the fuel gas generator may include high ash, high sulfur, hydrocarb...