baber/WOPTO huggingface dataset:
Patent WO-0219505-A1 (WO)
Title: Für die leistungsfaktorkorrektur angepasste gleichrichterschaltung
Inventor: FRANCESCUTTI UGO
IPC: H02M1/42
Filed: 2001-08-10
Abstract: Die Erfindung betrifft eine für die Leistungsfaktorkorrektur angepasste Gleichrichterschaltung umfassend eine erste, eine zweite, eine dritte und eine vierte Diode in Brückenanordnung, eine Induktivität und eine Kapazität, wobei ein erster und zweiter Pol der Brückenanordnung mit einer Quelle verbunden sind, die zumindest einen Wechselspannungsanteil aufweist, und die Induktivität seriell zum dritten oder vierten Pol angeordnet ist, wobei die Kapazität zwischen den ersten und den zweiten Pol geschaltet ist und zwei der vier Dioden als schnelle Dioden ausgebildet sind.
Patent WO-0233356-A1 (WO)
Title: Vorrichtung zum messen des gas-, wasser- und wärmeverbrauchs oder dergleichen
Inventor: CALMES MANFRED
IPC: G06M1/274
Filed: 2001-10-16
Abstract: Die Erfindung betrifft eine Vorrichtung zum Messen des Gas-, Wasser-, Wärmeverbrauchs oder dergleichen, mit einem Messwerk, das über ein Getriebe mit einem Zählwerk verbunden ist. Derartige Vorrichtungen sind bekannt. Allerdings ist der Aufwand beim Ablesen der Gas-, Wasser- oder Wärmezähler enorm. Zudem besteht die Gefahr von Übermittlungsfehlern. Die Aufgabe wird erfindungsgemäss dadurch gelöst, dass eine Welle vorgesehen ist, die mit dem Zählwerk oder dem Getriebe in Eingriff ist und an deren anderen Ende Mittel zum Durchführen bzw. Kontrollieren einer Fernanzeige bzw. Fernabfrage angeordnet sind.
Patent WO-02094448-A1 (WO)
Title: Flächenlöschanlage
Inventor: HEMSING ROLF
IPC: B05B15/65
Filed: 2002-02-21
Abstract: Die Erfindung betrifft eine Flächenlöschanlage zur Brandbekämpfung in Gesellschafts- und Industriebauten, beispielsweise in Warenhäusern, in Hallen und Konferenzräumen. Die Flächenlöschanlage besteht aus einzelnen Sprühköpfen 1, die zu einem flächenhaft gestalteten System verbunden sind, wobei die Sprühköpfe 1 strangweise über Stränge 18 an einer wasserführenden Ringleitung 16 angeschlossen sind, die einzelnen Stränge 18 sowie die Sprühköpfe 1 ansteuerbar sind, somit im Wechseltakt und/oder Intervall arbeiten, über die Flächenlöschanlage ein komprimierter Wassernebel bei einem anliegenden Wasserdruck im Bereich von 8 bis 22 bar erzeugt wird, wobei der Wassernebel mit einem Sprühwinkel von ca. 50° aus den Sprühköpfen 1 austritt und die Feuerlöschanlage oberhalb einer Zwischendecke, im Zwischendeckenbereich oder im oberen Bereich von Regallagern, angeordnet ist.
Patent WO-03001509-A1 (WO)
Title: Verfahren zur störverdeckung bei digitaler audiosignalübertragung
Inventor: KUPFERSCHMIDT CLAUS
IPC: G10L19/00
Filed: 2002-04-12
Abstract: Vorgeschlagen wird ein Verfahren zur Verdeckung von Störungen in einem Wiedergegebenen Audiosignal, dass aus einem digitalen Signal abgeleitet wird, wobei das wiedergegebene Audiosignal in Abhängigkeit einer Datenfehlerstatistik des digitalen Signals abgeschwächt wird, welches sich dadurch auszeichnet, dass dem abgeschwächten Audiosignal in Abhängigkeit der Datenfehlerstatistik des digitalen Signals ein Ersatzsignal überlagert wird. Das erfindungsgemässe Verfahren stellt in vorteilhafterweise sicher, dass auch bei stark gestörten digitalen Eingangssignalen jederzeit ein Signal akustisch wiedergegeben wird, so dass für den Benutzer, die an einem entsprechend ausgestattetem Rundfunkempfänger eingestellte Lautstärke jerderzeit realistisch abschätzbar ist. Damit wird eine Täuschung des Benutzers über die tatsächlich eingestellte Wiedergabelautstärke, die im Falle stark geströrten Empfangssignals infolge Unterbrechung einer Audiowiedergabe gemäss dem Stand der Technik nicht mehr feststellbar ist, vermieden.
Patent WO-03069151-A1 (WO)
Title: Kraftstoffeinspritzventil für brennkraftmaschinen
Inventor: POTZ DETLEV DI
IPC: F02M51/06
Filed: 2003-01-27
Abstract: Kraftstoffeinspritzventil für Brennkraftmaschinen mit einem Gehäuse 1, in dem in einer Bohrung 16 eine äussere Ventilnadel 20 und eine darin geführte innere Ventilnadel 22 angeordnet sind. Die äussere Ventilnadel 20 steuert durch eine Längsbewegung eine äussere Einspritzöffnungsreihe 130 steuert und die innere Ventilnadel 22 ebenfalls durch eine Längsbewegung eine innere Einspritzöffnungsreihe 230, welchen Einspritzöffnungsreihen 130 230 Kraftstoff durch einen im Gehäuse 1 ausgebildeten Hochdruckkanal 10 mit einem Einspritzdruck zugeführt wird. Im Gehäuse 1 ist ein Steuerdruckraum 52 ausgebildet, der mit dem Hochdruckkanal 10 verbindbar ist und durch dessen Druck zumindest mittelbar eine Schliesskraft auf die innere Ventilnadel 22 ausgeübt wird. Der Hochdruckkanal 10 ist mit einem Steuerraum 50 verbunden, durch dessen Druck zumindest mittelbar eine Schliesskraft auf die äussere Ventilnadel 20 ausgeübt wird, wobei der Steuerraum 50 mit dem Steuerdruckraum 52 verbunden ist. Im Gehäuse 1 ist ein Steuerventil 58 angeordnet, durch das der Steuerraum 50 mit einem Leckölraum 78 verbindbar ist.
Patent DE-1805227-A1 (DE)
Title: Damp proofing facades of concrete, - brickwork, plaster etc
Inventor: REISCHUK MANFRED
IPC: E04F13/08
Filed: 1968-10-25
Abstract: Fabric or felt of glass fibre bears applied separated pieces, with regular or irregular surfaces, made of pulverised mineral, pigments and a polymeric binder to give brickwork or mosaic appearance. Underside and/or facade are treated with adhesive comprising aqs. dispersion or acrylic ester-styrene copolymer with added vinyl chloride-vinyl acetate-maleic acid copolymer in solvent and a dispersion of polyvinyl ether; the parts are pressed on the facade, then covered with aqs. silicone resin emulsion plus aqs. dispersion of acrylic ester-styrene copolymer.
Patent DE-1817938-A1 (DE)
Title: Preparation of hypocalcaemic peptides
Inventor: KAHNT FRIEDRICH WERNER DR
IPC: C07K1/06
Filed: 1968-10-30
Abstract: (I) H- -val-leu-ser-ala-tyr-try-arg-Q1-leu-Q1-Q1-phe-his-arg-phe-ser-gly- -Q2-gly-phe-gly-pro-Q3-thr-pro-OH. where Q1= asn and/or asp. Q2= met, val, norval, leu, ile, or norlen and Q3= glu or gln. (II) Acid addn. salts of (I) (III) Derivs. of (I), e.g. esters, amides, S-oxides etc. (IV) Complexes of (I) e.g. with metal ions, organic polymers. Hypocalcaemics and anti-inflammatories.
Patent DE-1902878-A1 (DE)
Title: Producing one piece moulded bodies coated - with a glass reinforced casting resin
Inventor: BACH DIPL-ING HANS-ULRICH
IPC: E06B3/20
Filed: 1969-01-22
Abstract: High-strength moulded bodies are of use in the building industry to make door and window frames and are formed in multi-part moulds. The molten casting resin is first introduced into the mould in the required quantity and the glass-fibres-coated core is then inserted into the mould. On closing the mould the resin is forced into the upper part of the mould. The separate parts of the mould are compounded together by using a heat-setting plastic or deformable material, pref. a thermoplastic binding agent.
Patent DE-1926046-A1 (DE)
Title: 6-gemdifluoro pregn-4-eno (3,2-c) and 2,3-d) - pyrazoles
Inventor: ALTO FRIED DR JOHN H PALO
IPC: A61K31/58
Filed: 1969-05-22
Abstract: 6-Gemdifluoro pregn-4-eno- 3,2-c and 2,3-d -pyrazoles Steroid of formulae I and II: where R1 = OH or a hydrolysable cation; R2 = H, OH or a hydrolysable ester; R3 = H or Me, or R2 and R3 together form - where R4 and/or R5 = 1-6C alkyl, 5-6C cycloalkyl, or Ph; R6 = OH or Cl; R7 = H, Ph or p-F.C6H4-, and X = H, F, or Cl, with the proviso that if one of R6 or X = Cl, the other must also = Cl, are of use as antiinflammatories and gluco-corticoids. They may be prepd. by (a) reaction of the corresp. 4-ene-3-one with a trialkyl orthoformate and an alkali metal hydride, and (b) condensing the resulting 2-hydroxymethylene with NH2NHR7 or its salt.
Patent DE-1937752-A1 (DE)
Title: Active temperature indicators for detect- - ion of material inhomogeneities
Inventor: BERNHARD BOETTCHER DIPL-ING
IPC: G01N25/72
Filed: 1969-07-25
Abstract: The indicators are particularly for medical diagnosis and are so composed that when applied they create a simultaneous thermal current in the material under test. The indicator may be warmed before application. For the purpose of producing the heat change, the indicator may contain an additive which has a reaction, either spontaneously or with air, generating heat. Alternatively, the indicator may be dissolved in a volatile solvent which evaporates after application the latent of evaporation producing a local temp. change. Suitable temp. indicators are ternary mixtures of aliphatic cholesterol esters.
Patent DE-1941229-A1 (DE)
Title: Nuclear reactor with cast iron pressure - vessel
IPC: G21C11/02
Filed: 1969-08-13
Abstract: Cast iron shielding of pressure vessels around reactor core (as in 163394) is improved by reinforcement with bricks on shielding material.
Patent DE-1949638-A1 (DE)
Title: Continuous mixed liquid's specific wt measuring - device
Inventor: FAJANS JACK
IPC: G01N9/26
Filed: 1969-10-01
Abstract: The material, e.g. a suspension of cellulose fibres in a liquid carrier as used in paper making, is fed under pressure from a pump to a tee piece at the centre of a vertical pipe which has pierced end caps through which small bore pipes to equally spaced pressure take off points about the centre line, lead out to valves etc. to connect them to a differential pressure gauge. Near the ends are two short cross pipes connecting to a second vertical pipe at whose centre is an outlet tee piece followed by a constriction to maintain the pressure in the apparatus to at least 0.7 kp/cm2 preferably 7.0 kp/cm2. There may also be a stop valve in which case the pump has an optional by pass.
Patent DE-1949929-A1 (DE)
Title: Bulk material mixer
Inventor: KAISER FRITZ
IPC: B01F7/00
Filed: 1969-10-03
Abstract: The conical bulk material holder has a screw drive coming in from the bottom driven by a simple planet and sun wheel drive, and held at the top by a radial arm from the centre. The radial arm rotates carrying the screw drive round the sides of the cone while the drive operates the screw so that material is brought up from the bottom to give a simple mixing action.
Patent DE-1954085-A1 (DE)
Title: Inorganic adhesive - contg basic chromium and other basic metal salts for bonding bitumen to solids
Inventor: MUNTZER EMILE
IPC: C08K3/30
Filed: 1969-10-28
Abstract: Basic metal salt/s, pref. basic Fe salt/s, more pref. basic Fe sulphate, esp. Fe2(OH)2(SO4)2, are used as metal additive)s in modification of parent patent disclosing an inorganic adhesive based on basic Cr salt/s and metal salt additive/s for improving adhesion between bituminous binders such as bitumen, tar and pitch, and mineral solids, esp. in road-building. Improved adhesion and economy are achieved, as expensive Cr salts can partly be replaced by cheaper salts.
Patent DE-1954221-A1 (DE)
Title: Silica-supported catalyst for polymerisation of olefins
Inventor: AARON ABOUTBOUL HENRI
IPC: C08F10/00
Filed: 1969-10-28
Abstract: Supported catalyst for the polymerisation of l-olefins has a support consisting of a silica xerogel having a pore diameter of 300-500 A and a specific surface of 200-500 m2/g, this support being stable up to 1,100 C when it is calcined in a fluidised bed.
Patent DE-2021712-A1 (DE)
Title: Dye prepns
Inventor: WEBER HANS-PETER
IPC: D06P1/647
Filed: 1970-05-04
Abstract: Dye dispersions that are partic. easy to dissolve, suitable for dye-baths etc. based on organic solvents and also for starting materials for emulsions and printing, are obtained from a finely crushed mixture of (1) dyes not contg. acid water-solubilising groups and (2) an organic liquid in which the dye is insol. or only partially sol. pref. an oil, e.g., a petroleum fraction, silicone oil, fatty acid oil, fatty acid amide oil are natural oil, or an ethylene oxide-propylene oxide copolymer. Proportion of dyes 75%, pref. >20%. esp. 20-40% up to 50% of the liquid phase is opt. replaced by a dispersing agent.
Patent DE-2028890-A1 (DE)
Title: Filled methacrylic ester composition - based on monomer, for casting mouldings, profiles and electrical insulators
IPC: C08F20/12
Filed: 1970-06-12
Abstract: Mixture is based on a) 5 - 50 wt.% monomeric esters of methacrylic acid with mono- and/or polyhydric alcohols, in which is not >20 wt.% methacrylic ester can be replaced by other polymerisable vinyl or allyl cpds., and b) 95 - 50% inorganic or organic solid(s), which is insoluble in monomer (mixture). It can also contain minor amounts of dyestuffs or pigments and opt. polymerisation accelerators and pref. is cured using familiar polymerisation catalysts. This mixture is used as casting composition, esp. for production of opt. glass fibre-reinforced mouldings and profiles, e.g. rods, tapes, tube, hollow profiles of any section, and of electrical insulators. Polymer-free compositions have very low viscosity and hence are suitable for casting, even at very high filler content. Mould is called rapidly and glass fibre mat impregnated rapidly and uniformly.
Patent DE-2039531-A1 (DE)
Title: Edible oil de-odorizer - column with levels and valve link has intake and offtake heat exchangers
Inventor: POLLMANN HEINZ DIPL-ING
IPC: C11B3/12
Filed: 1970-08-08
Abstract: Edible oil is de-odorised in charges which pass from stock through a series of levels or stages linked by valves. The charge entering passes through a first heat exchanger for preheating, and the through a second at the offtake for cooling before leaving the column. The exchangers are filled with deaerated distilled water which boils or condenses at the temperature of the charge being handled. Simple apparatus conserves heat, avoids boiler scale problems of continuous apparatus and keeps charges separate to ensure this heat retention and consequent economy.
Patent DE-2061574-A1 (DE)
Title: Refuse sorting and processing - yielding products for use in agriculture from organic residues
IPC: B03B9/06
Filed: 1970-12-15
Abstract: Solid refuse is completely utilised by sorting into groups of reusable materials e.g. paper, textiles, metals, glass, plastics and organic residue, the principally organic residue being finely ground, dried and sterilised by means of a hot air counter current treatment at 100 degrees C, and then granulated for use in agriculture.
Patent DE-2100976-A1 (DE)
Title: Air filter assembly - with textile sleeve dust filter elements and vibration element cleaner
IPC: B01D46/00
Filed: 1971-01-11
Abstract: The suspender rods for the sleeves each have a catcher esp. a pair of cross arms, which during operation close up to the vibrator plate. They pass through clearance holes in a catcher plate, sufficiently wide to clear the vibratory movement of the rods but smaller than the cross arms. For maintenance quick release clamps on the drive sleeves for the rods fixed to the vibrator plate are released and each rod lowered to the catcher plate the whole plate then being lowered on screw jacks or cable joists.
Patent DE-2105601-A1 (DE)
Title: Stopper actuating mechanism for pressure die casting plant - - with extraneous drive
IPC: B22D41/20
Filed: 1971-02-06
Abstract: The stopper is applied from the inside of the melt vessel and the mechanism for operating it comprises a magnetic valve operated hydraulic cylinder, which turns a shaft by a crank linkage. The shaft transmits this movement through a pressure tight packing to the inside of the chamber, where a crank lever is attached to it, which is linked to a lever system to which the plug rod is attached. The system incorporates a make and break connection between lever arm and stopper and permits height adjustment of the stopper rod. Operation from outside the pressure chamber thereby reducing maintenance and safety hazard problems is permitted.
Patent DE-2109021-A1 (DE)
Title: Multilayer filter pack of pressed steel plates
IPC: B01D37/02
Filed: 1971-02-25
Abstract: Pack comprises superimposed steel plates all possessing a corrugation surrounding the filtering area and acting as a spacer between plates. The corrugations contain seals. The inlets and outlet also lay within the plate area, being connected to the relevant spaces between plates pref. by absence of seals or local gaps in seals.
Patent DE-2110353-A1 (DE)
Title: Warp knitting - weft laying attachment using magazine chains in a triangular path for yarn
Inventor: KOHL KARL
IPC: D04B23/12
Filed: 1971-03-04
Abstract: A magazine weft attachment for a warp knitting machine feeds the weft ends into the stitches on two parallel chains with grippers, but of unequal length. Between these is diagonally situated a further chain on which the yarn packages circulate and pass weft yarns first to the gripper on one chain, then to the other. On the needle side of the magazine chain is further wheel around which the chain passes, to give a triangular path. This means the yarn is gently drawn off at the beginning.
Patent DE-2112397-A1 (DE)
Title: Polyester-polyurethane foams - with widely adjustable porosity and rigidity, for use eg as imitation wood
Inventor: WALLENDA ENGELBERT
IPC: C08J9/00
Filed: 1971-03-15
Abstract: Plastics based on polyester foam has substances A to I added to each other in individual gps. Group 1:A: polyester, B: Co accelerator, C: peroxide ('Butanox', BP Paste-RTM), D: filler: Group 2: E: polyurethane casting compsn. component A, F: polyurethane hardener component B, G: filler (talc or rye flour); Group 3: H: polyurethane foam component A, I-polyurethane foam hardener component B. Prod. can be used as weather-proof decorative plaster for inside and outside walls of houses, in the form of highly foamed or compressed foam sheet and also as modelling blocks, imitation wood for the furniture industry. Adjustment of the mixing gps. allows the prodn. of foams varying from microporous to coarsely porous and from rubbery to rigid. Amts. used in wt. pts. are: 100 A, 0.2-0.4 B, 0.5-5C, 50-100D, 10-50E, 1-50F, 5-25 G, 10-50 H, and 10-50 I.
Patent DE-2124355-A1 (DE)
Title: Ingot mould insert - made of slag-or mineral wool
IPC: B22D7/12
Filed: 1971-05-17
Abstract: The insert for placing on the bottom of a mould filled through the bottom and destined to float on the melt has the same shape as the cross section of the mould and consists of compacted blast furnace slag or mineral wool. The plate may consist of several layers additionally incorporating a combustible material layer an Al-foil layer and a flux layer etc. The plate is more effective than material thrown into the mould.
Patent DE-2131789-A1 (DE)
Title: Brominated n-(trihalomethanesulphenyl) - carbamic acid halides - usef as starting materials for insecticides
Inventor: KUEHLE ENGELBERT DR
IPC: A01N47/04
Filed: 1971-06-26
Abstract: Brominated N-(trihalomethanesulphenyl)-carbamic acid halides of formula R-N-COX where R is a (substd.) (cyclo)alkyl or aryl residue, and X is F or Br. Used as starting materials for further syntheses e.g. when reacted with phenols, sulphenylated carbamic acid arylesters are obtained some of which have strong insecticidal characteristics. Prepd. e.g. by reacting N-(fluorodichloromethanesulphenyl)-carbamic acid fluoride with a brominating agent e.g. a metal bromide.
Patent DE-2140546-A1 (DE)
Title: Formed brick for drainage - readily and firmly secured in openings of concrete pipes by a push-in sleeve
Inventor: GLASSER FRITZ
IPC: E03F5/04
Filed: 1971-08-12
Abstract: The concrete brick has an opening for connection to the concrete pipe can be fixed even when the pipe is not completely dry. A push-in sleeve of an elastic material is used. A shaped piece, pref. annular and of an easily destructible material is fitted to the sleeve to conform with its shape, by casting it into the wall of a recess between the side of the sleeve facing the brick and the recess leading from the opening into the interior of the brick. The shaped piece shows at least one part protruding in the axial direction, which fits radially against an inner circumference of the sleeve. The bricks are used for road drain boxes.
Patent DE-2200952-A1 (DE)
Title: Trans 4-aminomethylcyclohexane carboxylic acid - purifn - by low temp crystallisation from water
Inventor: SUZUKI KIKUJI
Filed: 1972-01-10
Abstract: Process for purifying trans-4-aminomethylcyclohexanecarboxylic acid (I) contaminated with cis-(I) comprises mixing crude (I) with water at below 21.5 degrees C and sepg. crystals of pure trans-(I) trihydrate which crystallises. (I), an anti-plasmin agent, is purified without requiring fractional crystallisation of salts with expensive reagents e.g., p-toluene-sulphonic acid.
Patent DE-2228611-A1 (DE)
Title: Manually controlled direct current welder - with remote control circuit
Inventor: RIVA ERNESTO
IPC: H02M7/155
Filed: 1972-06-13
Abstract: In a set which is supplied through a down step transformer from a three phase or single phase a.c. supply the step down transformer is connected to one or several groups comprising a weld current control amplifiers each which are controlled by a regeneratively coupled control citcuit, which can be varied by means of a control resistance. The welding electrode holder is connected to the control amplifyer. The control circuit comprises pref. a.d.c. two step semi conductor amplifyer equipped with a stabilized grid member for a stabilized reference signal which is used for making up the rectifyer circuit input for the controler circuit.
Patent DE-2256433-A1 (DE)
Title: Automatic glass tube cutting machine - comprises cylindrical drum with periphally arranged workpieces which are rolled towards chopping device
Inventor: ARNOLD HERBERT
IPC: C03B33/06
Filed: 1972-11-17
Abstract: The glass tube chopping-up machine comprises a number of holders fitted on the circumference of a revolvable cylindrical holder on which the glass tubes are held in conjunction with abutting rolls, and a stationary cylinder onto which the glass tubes roll off as the cylindrical holder rotates. As the glass tubes pass a known type chopping device, pieces are chopped off. The machine incorporates raising mechanism for the spring lever held abutting rolls. The axes of rotation of the holders have an inclination which causes the glass tubes to roll under the action of gravity against a stop when the abutting rolls are raised. The cylindrical holder comprises pref. two coaxial wheels with teeth in which the tubes are held by the abutting rolls. The machine is fully automatic and has a high prod. rate.
Patent DE-2259872-A1 (DE)
Title: Protective foundry compsn for steel melts in moulds - contg flux composed of alkali(ne earth) metal borate expanded perlite and blast furnace slag
Inventor: FUCHS WERNER
IPC: B22D11/111
Filed: 1972-12-07
Abstract: The protective foundry compn. comprises a flux composed of alkali metal or alkaline earth metal borate, in amts. of 5-20 wt.% pref. Ca borate or colemanite in which case the amt. is 6-10 wt.%, blast furnace slag and expanded perlite. A pref. compn. is 30 wt.% expanded perlite 60 wt.% finely ground blast furnace slag of which max. 8% is deglassified, 8 wt.% finely ground colemanite, and 2 wt. % soda.
Patent DE-2308152-A1 (DE)
Title: Lime stone calcining vertical shaft kiln - with sideway offset inclined zone
Inventor: ADAM ANTAL
IPC: F27B1/04
Filed: 1973-02-19
Abstract: Part of the shaft is displaced sideways generating two contrary 40 - 60 degrees angle inclined zones the upper of which is part of the matrial preheating zone and the lower is the combustion zone with gas and air inlet holes in the shaft wall on the overhang side. Optionally quadruple shaft kiln are used for max. thermal efficiency. The combustion air is pref. passed across the shaft in the material cooling zone prior to injection into the firing zone together with the fuel gas. The design allows the calcining of - 50 mm size lime stone which normally has to be sieved out prior to calcining.
Patent DE-2310118-A1 (DE)
Title: N-acyloyl-N'-alkylene diamines - used as levelling agents in basic dyeing of acrylonitrile (co)polymers
Inventor: HEID CHRISTIAN DR
IPC: C07D207/404
Filed: 1973-03-01
Abstract: Title cpds. of formula (I): (where R is a divalent aliphatic,. cycloaliphatic, aromatic or bicyclic residue, or together with the dicarbonylamino gp. forms a 5,6 or 7 membered ring; R1 is H or 8-12C alkyl; R2 is 8-22C alkyl; n is 2-6). They are pref. prepd. by reacting H2N-(CH2)n-N(R1) R2 with an acylating agent of formula XOC-R-COX, (where X, X1 are Cl, Br, OH or X and X1 together are -o-) at 80-180 degrees C.