baber/WOPTO huggingface dataset:
Patent WO-03059982-A1 (WO)
Title: Dispersions de polyurethanne aqueuses utilisees en tant qu'adhesifs et revetements et leur preparation
Inventor: DUAN YOULU
IPC: C08G18/72
Filed: 2003-01-20
Abstract: L'invention concerne des matières à macromolécules organiques, c'est-à-dire, des dispersions de polyuréthanne aqueuses, leur utilisations en tant qu'adhésifs et revêtements et leur préparation. Lesdites dispersions de polyuréthanne aqueuses sont préparées par un procédé dans lequel on utilise ou pas un solvant organique et un mélange d'au moins trois polyisocyanates se composant de diisocyanate de 1,6-hexane (HDI), de diisocyanate de tétraméthylxylène (TMXDI) et d'autres polyisocyanates. Lesdites dispersions sont des dispersions de polyuréthanne aqueuses à l'échelle nanométrique. Ces nouvelles dispersions de polyuréthanne aqueuses possèdent non seulement d'excellentes propriétés en tant qu'adhésifs, mais également de bonnes propriétés filmogènes pour la formation d'un film possédant d'excellentes propriétés mécaniques, ce qui permet leur utilisation en tant que revêtements.
Patent WO-2004090623-A1 (WO)
Title: Procede de fabrication d'un afficheur a cristaux liquides a transistors a film mince
Inventor: HSU CHU-WEI
IPC: H01L21/336
Filed: 2003-04-11
Abstract: L'invention se rapporte à un procédé de fabrication d'un afficheur à cristaux liquides à transistors à film mince. Dans un mode de réalisation préféré, une couche d'isolation de grille, une couche de silicium amorphe et une couche métallique sont formées successivement sur une électrode de grille d'un substrat, puis une première couche de photorésine et une seconde couche de photorésine comportant une fente sont formées sur la couche métallique. Ensuite, deux processus de gravure sont mis en oeuvre pour former une électrode de source et une électrode de drain. Enfin, une couche de passivation est formée de manière à recouvrir le substrat. Ainsi, le procédé de l'invention permet d'obtenir une partie exposée de la première couche de photorésine avec une surface uniforme, ce qui permet d'empêcher un excès ou un défaut de gravure lors du second processus de gravure, et permet à la largeur de l'électrode de source et de l'électrode de drain de satisfaire la norme du produit. En conséquence, il est possible d'accroître considérablement la cadence de production et d'optimiser la technique de fabrication.
Patent WO-0149541-A1 (WO)
Inventor: SAUTER THOMAS
IPC: B60T8/172
Filed: 2000-12-22
Abstract: The invention relates to a method for controlling or regulating the braking effect on at least one wheel of a motor vehicle. According to the invention, a lateral dynamic parameter, which describes the lateral dynamics of the motor vehicle is determined. Depending upon a motor vehicle dynamic parameter, which describes the dynamics of the motor vehicle, or a wheel dynamic parameter, which describes the dynamics of a wheel, the necessity, or otherwise, of a driver independent brake actuation is determined. In the case, that a driver independent brake actuation is necessary, a pulsed signal for control of the actuators, dedicated to at least one wheel, is determined. The duration of the first impulse of the pulsed signal is affected by the lateral dynamic parameter.
Patent WO-0151742-A1 (WO)
Title: Schliesszylinder
Inventor: SENGUPTA PRITIMAY
IPC: E05B15/02
Filed: 2001-01-11
Abstract: Die Erfindung betrifft einen Schließzylinder mit einer den Stirnbereich des Schließzylinders abdeckenden Rosette (1) und einer in der Rosette drehbar gelagerten, den Zylinderkernkopf abdeckenden, einen Schlitz für die Einführung des Schlüssels aufweisenden, Scheibe (4), dadurch gekennzeichnet, dass die die Scheibe (4) aufnehmende Rosette (1) ganz oder teilweise aus einem für ein elektrisches Feld durchlässigem Material besteht.
Patent WO-0196732-A1 (WO)
Inventor: STOECKLEIN WOLFGANG
IPC: F02M59/46
Filed: 2001-04-05
Abstract: La présente invention concerne une vanne (1) permettant de commander des liquides. Cette vanne comprend un piézo-actionneur et un intensificateur de pression hydraulique (2). Ledit intensificateur de pression hydraulique (2) présente un premier piston (3), un second piston (4), ainsi qu'une enceinte sous pression (5), située entre les deux pistons (3, 4). Ladite vanne comprend également un élément de vanne (6) et un élément élastique (8), qui est directement connecté au second piston (4) de l'intensificateur de pression hydraulique (2).
Patent WO-02054059-A1 (WO)
Inventor: MEYER PETER
IPC: G01N29/11
Filed: 2001-05-12
Abstract: Die Erfindung bezieht sich auf ein Verfahren und eine Vorrichtung zur Ultraschallprüfung von Rohren für den Nachweis von an einer Innenwand (30) des Rohres (26) befindlichen Innenverformungen, insbesondere Beulen (38). Ultraschallimpulse werden eingeschallt aus einem Ultraschallprüfkopf (20) in das zu testende Rohr (26) von aussen und im wesentlichen radial auf eine Aussenwand (28) des zu testenden Rohres (26). Dabei erfolgen mehrfache Hin- und Herläufe zwischen der Aussenwand (28) und einer Innenwand (30) des Rohres (26), wobei bei jedem Hin- und Herlauf des Impulses Teil als Echoimpuls aus der Aussenfläche austritt. Diese Echoimpulse werden mittels eines empfangenden Ultraschallprüfkopfes aufgenommen, der die Echoimpulse in elektrische Signale umsetzt. Die elektrischen Signale werden in einer Auswerteeinheit dahingehend bewertet, wie stark der Abfall ist, wobei ein starker Abfall unterhalb eines Schwellenwertes als Beule (38) angezeigt wird und eine schwache Abnahme als beulenfreies Rohr (26) angezeigt wird.
Patent WO-0223933-A1 (WO)
Title: Kommunikationseinrichtung eines kraftfahrzeuges und verfahren zur herstellung einer rufumleitung
Inventor: TILGNER RAINER
IPC: H04Q7/32
Filed: 2001-08-16
Abstract: Die Erfindung schlägt ein Kommunikationssystem eines Kraftfahrzeuges vor, bei dem im Kraftfahrzeug eine Kommunikationseinrichtung (101) zur Herstellung einer Mobilfunkverbindung installiert ist, die darüber hinaus eine Kurzstreckenfunkeinrichtung aufweist. Ein externes Mobilfunkgerät (118; 119) weist ebenfalls zusätzlich eine solche Kurzstreckenfunkeinrichtung auf. Wenn das Mobilfunkgerät (118; 119) in den Funkbereich der Kurzstreckenfunkeinrichtung des Kommunikationsgerätes (101) im Fahrzeug eintritt, so erfolgt ein Datenaustausch zwischen den Geräten über die Kurzstreckenfunkverbindung. Ein Vergleichsmodul in der Kommunikationseinrichtung des Fahrzeugs vergleicht die empfangenen Daten mit gespeicherten Daten hinsichtlich bestimmter Merkmale, die eine Kennung des Mobilfunkgerätes ( 118; 119) beinhalten. Wird ein autorisiertes Mobilfunkgerät (118; 119) erkannt, so wird automatisch eine Rufumleitung innerhalb des zellularen Mobilfunknetzes aktiviert. Weiterhin wird eine entsprechende Kommunikationseinrichtung (101) sowie ein Verfahren zum Betreiben des Kommunikationssystems vorgeschlagen.
Patent WO-02071576-A1 (WO)
Title: Elektrische maschine
Inventor: BILSING THOMAS
IPC: H02K9/06
Filed: 2002-02-14
Abstract: Bei einer elektrischen Maschine, insbesondere bei einem Generator für ein Kraftfahrzeug, umfassend ein Gehäuse (2), einem in dem Gehäuse (2) um eine Drehachse (5) drehbar gelagerten Läufer (6) mit mindestens einer Läuferwicklung (14) und mindestens einem an dem Läufer (6) angeordneten Lüfterrad (21) zur Erzeugung von Konvektion in dem Gehäuse (2) und zur Abführung von Wärme von der mindestens einen Läuferwicklung (14), ist besseren Kühlung des Läufers (6) vorgesehen, dass das mindestens eine Lüfterrad (21) zumindest linienförmig mit dem Läufer (6) verbunden ist.
Patent WO-03066393-A1 (WO)
Inventor: NEUBAUER ACHIM
IPC: B60S1/24
Filed: 2002-09-20
Abstract: L'invention concerne un dispositif d'essuie-glace (10), destiné notamment à un véhicule automobile, comportant au moins une unité d'entraînement qui peut entraîner, au moins de manière oscillante, au moins un arbre d'essuie-glace (18) sur lequel est fixé un bras d'essuie-glace équipé d'une raclette d'essuie-glace. Des éléments de liaison (24) servent à fixer le dispositif d'essuie-glace (10).
Patent WO-03041469-A1 (WO)
Inventor: SCHULZ-HARDER JUERGEN
IPC: H01L21/68
Filed: 2002-10-11
Abstract: The invention relates to a method for the selective surface treatment of a planar workpiece (7), whereby, on at least one (3) of two metallic surface sides (3, 4), two similar workpieces (7) are detachably connected to each other at least in a partial region, on the first surface side thereof, such as to be sealed (12) to the outside.
Patent WO-03087635-A1 (WO)
Title: Getriebeaktor mit einer lagerstelle für die schaltschienen
Inventor: POLLAK BURKHARD
IPC: B60K17/08
Filed: 2003-04-10
Abstract: Die Erfindung betrifft einen Getriebeaktor mit einer durch einen Antrieb angetriebenen, in einem Gehäuse angeordneten Schaltwelle (2), an der ein Schaltfinger (3) und Auslegegeometrien (4) angeordnet sind, die Schaltschienen betätigen, wobei an dem Gehäuse Kragarme (12-15) angeordnet sind, die zwischen sich die Schaltschienen stützen und führen. Der Getriebeaktor (1) umfasst die in Lagerteilen (19) gelagerte zentrale Schaltwelle (2), die in der Mitte einen Schaltfinger (3) und zwei Auslegegeometrien (4) aufweist, die in einem Abstand entsprechend einer Gassenbreite angeordnet sind. Die Schaltwelle (2) wird vorzugsweise durch einen bürstenlosen Motor (5) über eine doppelte Planetenstufe (6) und ein Zahnsegment (7) angetrieben, das mit einem, vorzugsweise in einem Gehäuseteil (17) gelagerten Zahnrad (16) kämmt. Ein vorzugsweise zweiter bürstenloser Motor (8) treibt über eine Spindel (9) ein Schiebeelement (37) an, das den Schaltfinger (3) und die Auslegegeometrien (4) auf der Schaltwelle (2) verschiebt.
Patent DE-1817342-A1 (DE)
Title: Ortho and para-methylated phenols
Inventor: THOMA MATTHIAS
IPC: C07C37/16
Filed: 1968-12-28
Abstract: Ortho- and para- methylated phenols Cpds. are produced by reacting 1 mol of a phenol having H atoms in the positions o- and p- to OH group, with excess CH3OH in presence of Al methylate catalyst at 280-420 degrees C, the CH3OH being passed continuously through the phenol and excess MeOH and H2O produced in reaction being drawn off at the top of the reactor, the catalyst during the reaction being adjusted to pH 1-3 by adding acid.
Patent DE-1915381-A1 (DE)
Title: Cascaded tunnel diode assembly
Inventor: REINHARD DAHLBERG DR
IPC: H01L25/07
Filed: 1969-03-26
Abstract: The assembly contains a number of individual tunnel diodes connected in series, the series connection being achieved either by alloying, soldering or pressing together of the individual biodes or by integrated manufacture from a single slice of semiconductor material. An epitaxial layer may be grown on a semiconductor crystal slice which has an alternating sequence of n "n plus" and "p plus" zones in the plane of the layer. Alternatively such zones may be grown individually perpendicular to the slice or they may be deposited as monocrystalline individual layers by vapour or powder techniques.
Patent DE-1929494-A1 (DE)
Title: Resistance butt-welding of compact and - hollow articles
Inventor: S LIVSIC VIKTOR
IPC: B23K11/04
Filed: 1969-06-11
Abstract: Butt-welding procedure can be used for the welding of pipes, sheet metal, rails and the like, and the burn off rate is altered during welding. The welding process is completed before the entire surface of the front face has reached a temp. of 0.7 - 1.0 of the melting temp. of the material to be welded. Max. output performance is maintained as a function of the current flowing through the primary circuit of the welding transformer, while the products are upset to an extent equal to the distance between the cross-sections of the products when heated to a specific temp.
Patent DE-1952096-A1 (DE)
Title: Indicator for adjusting armatures
Inventor: KROMBACH HEINZ-DIETER
IPC: F16K37/00
Filed: 1969-10-16
Abstract: Mechanical indicator for adjusting inaccessible armatures particularly those under ground, which have an assessable adjusting connection. The connection is joined to the armature by a shaft or spindle surrounded by a jacket. The indicator is a pin which can move against the force of a back pressure spring and which is connected to a gear part in the armature region by a drawing means pref. Teflon coated steel wire through the jacket.
Patent DE-1960158-A1 (DE)
Title: Allyl chloride by chlorination of propylene
Inventor: KUCHERTZ HERBERT DIPL-CHEM DR
IPC: C07C17/10
Filed: 1969-12-01
Abstract: and propylene are reachted on Te-contg. catalysts to form allyl chloride, useful as raw material in epichlorohydrin, allyl alcohol or glycerol prodn. and HCl, pref. at 100 - 350 degrees C (200 - 260 degrees C), pref. using 1:0.5 to 1:10 (1:1 to 1:3) Cl2: propylene mole ratios, and 0.5 - 50 (1-5) atm. absolute. Pref. catalyst contains 1-50 (3-30) wt.% Te in element or cpd. form. Cl2 and propylene are pref. led separately into catalyst, pref. in fluidised or turbulent bed reactors. In pref. modification, chlorination process is pref. combined with hydroxy-chlorination process as in DT 1,224,302, where propylene, HCl and O2 are reacted on Te-contg. catalysts at 20 - 350 degrees C, by leading mixture of HCl produced in reaction, non-converted propylene, any isopropyl chloride formed and O2 into same or other reactor and converting it into allyl chloride and water.
Patent DE-2004631-A1 (DE)
Title: Gasholder wall knife seal
IPC: F17B1/00
Filed: 1970-02-03
Abstract: One wall ends as a blade or knife seal which rides down through guide sheets into a rectangular container on the other wall at the opposite end which is filled with graphite pellets as sealant. Asbestos packings are fitted to seal off the container and blade connection. When the seal is in operation, the blade pref. lies close above the bottom of the container, and fitted cover sheets prevent the pellets migrating from one side of the blade to the other. The packings also prevent the pellets entering the guide track and clogging it.
Patent DE-2026757-A1 (DE)
Title: Compact sewage treatment plant - for hotels,camping sites,etc
IPC: C02F3/12
Filed: 1970-06-01
Abstract: A biological effluent treatment plant for household or industrial use, esp. for hotels, camping sites etc. comprises a tank divided by a concentric partition wall extending almost to the bottom into primary (central) and secondary clarification chambers. The primary contains a revolving aerating rotor with vertical suspended shaft; effluent enters this chamber and is continuously recycled from and back to it through a sludge disintegration pump; after leaving the primary chamber it is separated into scum and clarified effluent in the secondary chamber whence it leaves through an overflow duct. Sludge is recycled from the scum chamber back to the primary chamber, pref. by an air lift pump, and the whole unit is covered with a roof. The structure is pref. of glass-fibre reinforced plastic.
Patent DE-2034828-A1 (DE)
Title: Amber type perfumes - synthesis from myrcene and itaconic acid anhydride
IPC: C07D307/94
Filed: 1970-07-14
Abstract: Diene adduct obtd. from myrcene and itaconic acid anhydride is converted to a cyclised adduct (e.g. with BF3-etherate), which is reduced to a diol (e.g. with LiAlH4) and converted to a cyclised ether, the amber odour of which can be modified by hydrogenation to satd. ether of formula:-.
Patent DE-2045440-A1 (DE)
Title: Halosulphenyl-ureas - intermediates for plant protection agents
IPC: C07C381/00
Filed: 1970-09-15
Abstract: Cpds. of formula: X-S-NR-CO-NR1R2 (where X = Cl or Br; R, R1 and R2 are aliphatic, aralipathic or aryl groups or R1 and R2 are both members of a 3- to 7-membered ring, opt. contg. an O- or S-atom when the ring is 6-membered), may be prepd. by reacting (R3)3Si-NR-CONR1R2 (where R3 = 1-4C alkyl) with SCl2 or SBr2 (>=1 mole), pref. at -20 to 150 degrees C, esp. 0-40 degrees C.
Patent DE-2053308-A1 (DE)
Title: Cement hardening accelerator and anti-freeze - using calcium sulphamate
IPC: C04B22/14
Filed: 1970-10-30
Abstract: The Ca sulphamate is added to concrete, cement or mortar in amt. of 1.5-12 wt.%.
Patent DE-2104262-A1 (DE)
Title: High resolution metal or plastic screen gauze - printing plate
IPC: B41C1/14
Filed: 1971-01-29
Abstract: The metal or plastic gauze is tensioned in a frame and covered with a thin, opaque metal layer. Specif., the gauze is made of stainless steel or nickel or a non-metallic material such as silk, polyamide, polyterephthalate or glass, covered with a metal layer such as nickel, silver, copper or brass. This metal layer is pref. applied by electroless deposition and is then electrolytically strengthened.
Patent DE-2118199-A1 (DE)
Title: Purified drinking water - stabilised by uv radiation as regards content of oxygen and disinfectant
IPC: C02F1/32
Filed: 1971-04-08
Abstract: Drinking waters purified with addn. of an oxidising agent are stabilised by setting pH of water to 4.5-9, if not already within this range, and after addn. of oxidising agent, exposing the water to UV irradiation for time required to complete reaction. Pref. Cl2 as aq. Cl2 gas soln. is added as oxidising agent, followed by exposing treated water, in rising stream, to UV irradiation of an Hg vapour high press. radiator with 0.01-0.2 kWhr/m3 power input.
Patent DE-2134545-A1 (DE)
Title: Sifting device - swinging blades wipe screen to prevent caking of the granular material
Inventor: BUTLER FREDERICK
IPC: B07B1/28
Filed: 1971-07-10
Abstract: Granulated and icing sugar, flour, salt, chocolate and coconut flakes are sifted onto cakes or supporting surfaces by a device consisting of a feeding hopper terminating at its lower end in a square section in which a multitude of vertical blades are suspended horizontally. The blades rest on the sifting screen such as perforated plate or woven wire net covering a support frame. With the backwards and forwards movement of the screen the blades swing in a pendulum fashion, wiping the screen and preventing it from being caked-up. The screen moves on adjustable rollers and its movement is achieved by manual, pneumatic or electrical means. Pattern on cakes and such-like products can be produced by the deposited granulate if masks are interposed between the screen and the product.
Patent DE-2142693-A1 (DE)
Title: Double plush fabrics - improved pile cutting with cooled knife blades
Inventor: DERICHS JOSEF DR
IPC: D04B23/08
Filed: 1971-08-26
Abstract: On a double bed raschel machine for knitting pile type clothes a cutting device is added. This consists of a continuously running band knife, at a slight angle to the horizontal plane of the needles beds. On stopping the machine, this is lowered. The needle is cooled by indirect heat exchange with a cooling medium.
Patent DE-2153472-A1 (DE)
Title: Determination of low boiling components in liquids - by evaporation and measurement of specific gravity changes
Inventor: KUESTERS HUBERT DR
IPC: G01N33/28
Filed: 1971-10-27
Abstract: The proportion of a low b.pt. component in a liquid mixture can be determined by heating the mixture to the b.pt. of the low boiling component and using the variation in specific gravity (s.g.) of the resulting vapour/liquid mixture as a measurement of the quantity of the component present. Several variations are possible: (A) A metering pump feeds the mixture to a heater above which is a constant ht. column of liquid flowing over a weir (7). The low boiling component flashes and its concn. is indicated by changes in pressure on a gauge. (B) The feed is pumped at a constant rate via a head pipe to a boiler and column. Variations in level to the head pipe, balancing changes in s.g. in the column, indicate the component composition. (C) As in (B) the feed enters the boiler at a constant rate but via a constant head pipe. It is heated to a constant temp. and the heat absorbed from the boiler to give the quantity of low boiling component present. (D) As is C but with an overflow float on the top of the boiler column with overflow provision at different levels. The height to which the column expands is then a measure of the component composition. For use on liquid/liquid mixture esp. oil/water mixtures.
Patent DE-2160067-A1 (DE)
Title: Sugar sprinkler - for cakes, with conveyor and sugar recycling circuit
Inventor: JAENCHEN RUDOLF
IPC: A21C15/00
Filed: 1971-11-30
Abstract: The cakes travel over an endless chain conveyor and pass a sugar discharge pipe where the top and sides are sprinkled with an excess of sugar. A hopper under the discharged end of the conveyor collects the sugar removed from the cakes and passes it to a screw conveyor which lifts the sugar back to the discharge pipe.
Patent DE-2263951-A1 (DE)
Title: Polyamide-coated steel wire - for tyre cords and woven constructions
IPC: D07B1/06
Filed: 1972-12-29
Abstract: Polyamide-sheathed steel wire, for tyre cords and fabric, comprises a wire of dia 0.05-0.60 mm and tensile strength 100-300 kp/mm2, coated with nylon 6.6, 0.02-0.03 mm thick. Prod is suitable for twisting and cording on standard textile twisting or cording machines and can be processed to woven fabrics on textile looms.
Patent DE-2310072-A1 (DE)
Title: Exhaust gases purification - using reducing catalysts contg sintered oxide mixts
Inventor: KUDO TETSUICHI
IPC: B01J23/76
Filed: 1973-02-28
Abstract: The catalysts consists substantially of metal oxide compsns of formula A2-x-BxNiO4-y, (in which A is >=1 of La, Nd, Pr, Sm and Y, B is Ca and/or Sr, x is 0.05-1.8 and y is 0- x/2). The compsns pref. have a crystal structure of the K2MgF4 type and may be distributed over an inert carrier. They are able to remove N-oxides from exhaust gases by catalytic redn. to N2 e.g in presence of hydrocarbons or CO, or by absorption in absence of reducing gases. The catalysts are effective over a wide temp. range of 150-1100 degrees C, even in presence of O2, are very resistant to many catalyst poisons and are cheap and long-lasting.
Patent DE-2333971-A1 (DE)
Title: Flow rate meter - measures sound velocity by phase difference between pulse transmitted alternately with or against flow
Inventor: BROWN ALVIN
IPC: G01F1/66
Filed: 1973-07-04
Abstract: Two piezo-electric ultrasonic transducers placed at some distance from each other in the fluid e.g. water, act as transmittes and receivers. Signals proportional to the sound velocity in the direction and against the direction of the flow and controlled by the phase difference are added and the sum controls an oscillator. This results in a signal proportional to the sound velocity in the fluid and a signal proportional to the flow rate. The circuit includes means for suppression of pulse echoes and an alarm signal at a predetermined flow rate.
Patent DE-2337366-A1 (DE)
Title: Underground and/or underwater electrical connector - has fluorinated hydrocarbon jacket and glass sealing ring
Inventor: RING SANDIFORD
IPC: H01R13/523
Filed: 1973-07-23
Abstract: Electrical plug connector is for connecting conductors with instruments underground or under water, for transmission of signals to the surface, e.g. in seismic prospecting for oil or minerals, at the high temps. in deep bores, it may also be used for monitoring underground nuclear explosions. A conducting pin in the male part has a glass sealing ring between its ends. Two heat-resistant sleeves near the ring surround the pin between the ring and the respective ends. A metallic jacket surrounds the ring and the parts of the sleeves directly adjacent to it, the ring is connected to the jacket, pin and sleeves. Pref. the ring is of compressed glass, or a core of compressed glass and a thin glass layer with thermoplastic properties compared with the core. The female part has a seal surrounding the outstanding section of the jacket, to seal between it and the appts. housing, the inner jacket is of a fluorinated hydrocarbon.
Patent DE-2339528-A1 (DE)
Title: Substd 3-amino propyl 1-alkoxy 1,1-diphenyl-methanes - useful as analgesics and morphine antagonists
Inventor: HOELLINGER RODERICH DR
IPC: C07C217/62
Filed: 1973-08-03
Abstract: Title cpds. are of formula (I): Ph2C(OR)CHR3CH2N(R1)-CH2R2 (I) where R = 1-4 C alkyl; R1 = H, 1. alkyl, alkyl, or PhCH2; R2 = alkenyl, haloalkenyl, aralkenyl, alkynyl, cycloalkyl, or cycloalkylidenemethyl; and R3 = H or Me; and salts of I. I are prepd. by standard methods e.g. (A) addition of HalCHR3CH2N(R1)CH2R2 to a metalo deriv. of Ph2C(OR)H or (B) alkylation etc. of corresp. primary or sec. amines.