Chromogenic compounds of the formula I (I) and a process for their preparation are described, X denoting a hydrogen atom, a protective group customarily used in peptide chemistry or a group which irreversibly blocks the terminal amino group, A and P being identical or different and denoting an alpha-, beta- or gamma-amino acid which is composed of 2 to 15 carbon atoms with up to 3 nit...

Disclosed herein are a process for producing 4'-demethyl-epipodophyllotoxin- beta -D-ethylidene-glucoside of the formula (II) comprising (A) reacting 4'-halogenoacetyl-4'-demethyl-epipodophyllotoxin- beta -D-2,3-di-O-halogenoacetyl-4,6-O-ethylidene-glucoside of the formula (I) with an amine and/or ammonia, or (B) subjecting the acyl-derivative (I) to alcoholysis in the presence of a catalyst, ther...

Disclosed herein are a process for producing 4'-demethyl-epipodophyllotoxin- beta -D-ethylidene-glucoside of the formula (II) comprising (A) reacting 4'-halogenoacetyl-4'-demethyl-epipodophyllotoxin- beta -D-2,3-di-O-halogenoacetyl-4,6-O-ethylidene-glucoside of the formula (I) with an amine and/or ammonia, or (B) subjecting the acyl-derivative (I) to alcoholysis in the presence of a catalyst, ther...

Disposable diapers having elasticized waistbands which allow the diapers to breathe and which reduce the incidence of waistband rollover. The waistbands are formed by affixing elastic elements between the topsheets and the backsheets (in the waistband region of the diapers) using regularly spaced, transversely extending regions of securement. Regions of nonsecurement are formed between pairs of th...

Disposable diapers having elasticized waistbands which allow the diapers to breathe and which reduce the incidence of waistband rollover. The waistbands are formed by affixing elastic elements between the topsheets and the backsheets (in the waistband region of the diapers) using regularly spaced, transversely extending regions of securement. Regions of nonsecurement are formed between pairs of th...

Improved sealing system between an enclosure of brittle material and a metal apparatus for carrying out chemical reactions, in which a connection member (6) is mounted over the open end (2') of the enclosure (2), with the interposition of a toroidal seal (9) between the opening into the enclosure and the underside of the connection member; a supplementary toroidal seal (11) is inserted between the...

A storing installation for carrying a number of helically extending turns of an endless conveyor belt laid upon one another in a pile, where the various belt turns in the pile are supported by one another, comprises two endless chains which are arranged under the belt pile, support the two edge portions of the belt and are carried by supports, said chains being each adapted, after the ingoing or o...

A storing installation for carrying a number of helically extending turns of an endless conveyor belt laid upon one another in a pile, where the various belt turns in the pile are supported by one another, comprises two endless chains which are arranged under the belt pile, support the two edge portions of the belt and are carried by supports, said chains being each adapted, after the ingoing or o...

A storing installation for carrying a number of helically extending turns of an endless conveyor belt laid upon one another in a pile, where the various belt turns in the pile are supported by one another, comprises two endless chains which are arranged under the belt pile, support the two edge portions of the belt and are carried by supports, said chains being each adapted, after the ingoing or o...

In which for example, ships there are transported stacks of containers (13, 14) which have openings (15, 16) for circulation of conditioned air through the containers. The openings in the containers are connected to openings (19, 18) in units (17) which are stationarily arranged in the ship and supply the conditioned air to the containers. The containers (13, 14) have a height of h or H. In order ...

In which for example, ships there are transported stacks of containers (13, 14) which have openings (15, 16) for circulation of conditioned air through the containers. The openings in the containers are connected to openings (19, 18) in units (17) which are stationarily arranged in the ship and supply the conditioned air to the containers. The containers (13, 14) have a height of h or H. In order ...

The solar collector, which is intended for use as an evaporator in a heat pump, consists of a housing having a reflecting bottom 1 and being closed at the top by means of a glass plate 5. Between the bottom and the glass plate, a pipe coil 7 forming an evaporating tube is mounted by means of spacers 8 resting against the glass plate 5 and the bottom, respectively, and grasping by means of cut-outs...

1. A lamp frame (1) for screening lamps arranged therein, comprising frame components (10) which extend at right angles to one another and which enclose a frame opening (12) and which at their corners are each connected to one another by a corner connector (2) where each corner connector (2) has two identical coupling arms which are at right angles to one another and which are connected to one ano...

1. A lamp frame (1) for screening lamps arranged therein, comprising frame components (10) which extend at right angles to one another and which enclose a frame opening (12) and which at their corners are each connected to one another by a corner connector (2) where each corner connector (2) has two identical coupling arms which are at right angles to one another and which are connected to one ano...

To guard against explosion, the rupture strength of an electrolytic capacitor can 11 is weakened in a controlled manner by impressing a cruciform partial shear pattern 10 in its base. When the can is subjected to excessive pressure a slow leak initially develops at the centre of the cross, and a further pressure rise is required before the leak rate is augmented by a progressive separation of the ...

The nail has a shaft and a head (B), the shaft having longitudinal edges separated by parts drawn in towards the nail centre, resulting in increasing the engaging surface of the nail with the wood in which it is inserted. The head has a crossways spread connecting to the shaft cross-section around which there is a constant overhang (A).

Acridanone derivatives of the formula I wherein the dotted line is an optional bond, R1 is hydrogen, halogen or nitro, R2 is hydrogen or lower alkyl, one of the substituents R3 and R4 is hydrogen or lower alkyl and the other together with R is an additional bond and R5 is hydrogen, lower alkyl, lower alkenyl, lower alkynyl or lower alkyl substituted by halogen or lower alkoxy, and pha...