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...

An improved separation system and its method of operation for the separation of solutes, colloidal particles, and/or suspended matter from solutions or suspensions containing the same is disclosed. In a preferred embodiment, this invention is concerned with a simple and economic membrane filtration system that can be operated in many of the modes of operation of a membrane filtration system, espec...

The method which aims at preventing condensation phenomena on tools (5) heated by the work and traversed by a cooling medium relates particularly to synthetic material working machines. In order to avoid condensation of humidity on cooled tools (5), a dry air veil is created by direct blowing to the tools (5), thereby making possible a further reduction of the temperature of the cooling water of t...

The invention provides a compressed aggregate of superabsorbent and a filler. The aggregate is in the form of tablets or granules and absorbs liquid rapidly. The aggregate may be used in disposable absorbent products, such as diapers, tampons and sanitary napkins, and in containers such as colostomy bags, urinary bags, bedpans and the like.

A phosphate and silicate-free aqueous composition comprising (i) 5-45% of alkali (ii) 0.5-20% of polycarboxylate and (iii) 0.1-10% of phosphate the balance comprising water. Such compositions are useful in dish or laundry washing or in industrial washing systems.

Disperse dyes of formula (I) are new- in which: R1, R'1 and R2 are each H, Cl, Br, C1-2 alkyl or C1-2 alkoxy, and R3 and R4 are each C2-3 alkylene. Dyes (I) and mixtures thereof with up to 90 weight percent of other yellow disperse dyes are of use in dyeing, pad-dyeing or printing hydrophobic fibrous materials.

The reactor core contains fuel rod assemblies (a) producing thermal neutrons; and fuel rod assemblies (b) producing epithermal neutrons. The core is located below a top plate carrying an assembly of guide tubes for contol rods. Each tube contains a vertical row of horizontal, perforated plates and perofrated perforated sheaths forming guides for the control rods. Each plate and each sheath contain...

The power of a nuclear reactor is adjusted by a first coarse control means and a second fine control means. The reactor is controlled in accordance with a predetermined load variation programme differing from a previous programme. Adjustments of the reactivity are made during successive cycles of the programme. The adjustments in a second cycle are made in accordance with variables resulting from ...

1. Apparatus for processing thermoplastic synthetic platics material, comprising a receiving receptacle (1), in the bottom zone of which there is provided a comminuting and mixing tool (4) rotatable around an approximately vertical axis, and a screwtype extruder (15) arranged radially relative to the vertical axis, the housing (2) of the screwtype extruder being connected on its intake side to the...