baber/WOPTO huggingface dataset:
Patent EP-0192069-A3 (EP)
Title: Method for transmitting data signals
IPC: H04L12/52
Filed: 1986-01-22
Abstract: 1. Method for transmitting data signals between subscriber stations (Ttx, Tx) or transmission lines connected to a data exchange (EDS) and a signal handling device (TTU), likewise connected to the data exchange via a plurality of connecting lines, with a number of transmission channels (K1 to Kn) corresponding to the number of connecting lines, the data signals to be handled transmitted via one of the transmission channels in question to the signal handling device being transferred into a memory area, just assigned to the transmission channel in question for receiving data signals, of a data signal memory (RAM) having a plurality of memory areas freely assignable by the transmission channels, and, after this transfer, a further memory area being assigned to the transmission channel (e.g. K1) in question for a renewed transfer of data signals to be handled, and data signals temporarily stored at first in a memory area of the data signal memory being forwarded after handling via at least one transmission channel, characterized in that an indication signal is transmitted to the data exchange (EDS) from the signal handling device (TTU) via a separate channel available to all transmission channels if in one memory area of the data signal memory stored data signals cannot be forwarded, and in that, with the output of the indication signal, the memory are whit there to occupied by the data signals which cannot be forwarded is released.
Patent EP-0195907-A3 (EP)
IPC: B65G15/42
Filed: 1986-02-06
Abstract: The conveyor belt structure comprises a continuously 
movable web (2) formed of a lower layer (20), impregnated with 
polyurethane and/or rubber, an intermediate load-bearing 
layer (21) and an upper layer (22), of vulcanized rubber. 
Formed on the upper layer (22) are projections (30), having be­
velled lead-in edges (32) and defining seats (40) for removably 
accommodating therein tiles (5).
Patent EP-0193820-A3 (EP)
Title: Method for forming a thin film pattern
IPC: H01L27/142
Filed: 1986-02-22
Abstract: A method for forming a thin film pattern 
comprising the steps in sequence of forming a lift-off 
layer (2) directly on a substrate (1) wherein a pattern of the 
lift-off layer is reverse to a desired thin film pattern, 
forming a thin film (3) on the substrate, removing an 
undesirable portion of the thin film (3) together with the 
lift-off layer (2); and a method for producing a 
semiconductor device (8) comprising the steps in sequence of 
forming a first electrode (5) on an insulated substrate (4), 
removing a part of the first electrode (5), forming a 
semiconductor including amorphous material (6) on the first 
electrode (5), forming a lift-off layer on the semiconductor 
including amorphous material at such a place whereon a 
second electrode is not desired to be formed, and forming 
a second electrode (7) on the semiconductor.  
     According to the present invention, a thin film 
pattern can be formed at low production cost, with high 
productivity and accuracy, and with less danger during 
the process.
Patent EP-0212323-A3 (EP)
IPC: H03M1/12
Filed: 1986-07-24
Abstract: A method and apparatus for generating a signal 
transformation useful in signal processing is 
provided. According to the preferred embodiment, a 
signal, e.g., a speech waveform, is first converted 
into a sequence of digital data samples, and a 
reference position along a first sub-part of the 
sequence is then selected. A "weighted" histogram 
corresponding to the reference position is then 
generated according to a correlation function. 
Thereafter, a new reference position is selected, for 
example, at a sub-part of the sequence located a pitch 
period of the signal from the original reference 
position, and an additional histogram is generated for 
this sub-part. The plurality of histograms comprise 
the transformation of the signal, which retains a 
substantial part of the informational content of the 
original signal. Therefore, the transformation is then 
used as the signal itself in signal processing 
applications such as speech compression and synthesis.
Patent EP-0217479-A3 (EP)
IPC: G06F12/06
Filed: 1982-01-22
Abstract: An N-bit (e.g. N = 4) memory 100 is coupled to a first bus 
600. A second memory 200 is coupled by a coupling circuit 
300, e.g. a multiplexer, to the first bus 600 and a second bus 
700. In a first mode, the second memory 200 is coupled to the 
first bus 600 and an accessing circuit 400 provides control 
signals 410, 420 selectively to the first and second memories 
so that, whichever memory is accessed, reads out data on to 
the first bus 600. In a second mode, the control circuit 500 
causes the coupling circuit to couple the second memory 200 
to the second bus 700. The accessing circuit 400 applies con­
trol signals 410, 420, simultaneously to the two memories so 
that each access causes data to be read out from the first and 
second memories simultaneously on to the first and second 
buses respectively.
Patent EP-0196743-A3 (EP)
IPC: C07D215/28
Filed: 1986-01-29
Abstract: Chromogenic materials which react to give a color 
reaction when in the presence of a peroxide ROOR′ decom­
posing to give a radical oxygen are unstable when dissolved 
to give working solutions for use in chromogenic reactions. 
Compositions containing in addition to the chromogenic 
material also a peroxide needed in the said reaction are also 
unstable, leading to premature appearance of color.  
     Stable chemical compositions containing chromogenic 
materials and stable compositions containing mixtures of 
chromogenic materials and peroxides are described, which 
can be used in chromogenic reactions after having been 
stored for long periods of time. Also described are stabilizing 
chemical compositions and methods for obtaining the said 
stable compositions.
Patent EP-0195553-A3 (EP)
Title: Spacecraft operable in two alternative flight modes
IPC: B64G1/24
Filed: 1986-03-05
Abstract: A spacecraft (20) is adapted for orbital flight in two alternative modes, referred to as the earth-oriented and quasi sun-oriented modes. The spacecraft comprises a spacecraft body (21), at least one solar array (44, 46) extendible outwardly from the spacecraft body, passive attitude control means (58) utilizing gravity gradient stabilization means which is extendible and retractable relative to the spacecraft body (21), and active attitude control means (69, 71). The gravity gradient stabilization means (58) is effective when extended to stabilize the spacecraft in the earth-oriented mode, and the active attitude (69, 71) control means is effective to stabilize the spacecraft in the quasi sun-oriented mode.
Patent EP-0250787-A3 (EP)
IPC: H05K13/00
Filed: 1987-05-07
Abstract: A carrier plate (10) for handling miniature electronic com­
ponents is disclosed that employs a central member (20) of 
unitary construction and compliant composition having a 
pair of generally parallel first and second surfaces. An apertu­
red portion of the central member defines an array of recep­
tor holes (21) extending through the central member between 
the first and second surfaces, each one of the receptor holes 
having a cross sectional area that is shaped and dimensioned 
to receive in a force fit one of a batch of electronic com­
ponents to be handled. Framing components (30 and 40) for 
facilitating central member handling and enabling central 
member replacement without obstructing component access 
to the receptor holes define a generally rigid removable 
framework.
Patent EP-0261529-A3 (EP)
Title: Flow meter
IPC: G01F1/10
Filed: 1987-09-12
Abstract: The flowmeter has a measuring element, for example a vane wheel, which is movable as a function of the flow velocity of the electrically conductive liquid medium to be detected and which is connected to a voltaic speed sensor, whose electric pulses can be fed to an electrical or electronic counter. The voltaic speed sensor is formed by elements which are provided parallel to the axis of rotation of the measuring element and are all arranged approximately on the same radius from the axis of rotation and connected to the measuring element. Outside and inside the circle of motion of the elements, the electrodes are located, via which the signals serving to count the revolutions can be tapped. The elements and electrodes are surrounded by the liquid medium. According to a further development, the elements are designed as a tube part which, in its shell surface, has slots which can be scanned by the electrodes from inside and outside the tube part. <IMAGE>
Patent EP-0267597-A3 (EP)
IPC: C02F5/08
Filed: 1987-11-11
Abstract: Addition of a secondary scale inhibitor is 
made to a water medium containing a primary 
phosphonate scale inhibitor to inhibit precipitation 
of insoluble calcium phosphonates which are formed by 
the reaction of calcium in the water medium with the 
primary scale inhibitor thus forming insoluble 
calcium phosphonate. The secondary scale inhibitor 
has the function of inhibiting precipitation of such 
insoluble calcium phosphonates. The secondary scale 
inhibitor is a copolymer of an acrylic acid and/or 
methacrylic acid with one or more of a principal 
comonomer selected from substituted acrylamides, 
alkoxyalkyl acrylates, substituted and unsubstituted 
alkyl acrylates, acrylamido alkane sulfonic acids, 
hydroxyalkyl acrylates, alkyl itaconates, and 
mixtures thereof.
Patent EP-0271772-A3 (EP)
IPC: H01L23/31
Filed: 1987-12-02
Abstract: Formmassen zur Umhüllung von Halbleiterbauelementen auf 
der Basis von füllstoffhaltigen Polyepoxidharzen und Poly­
aminen als Härter sind nicht lagerstabil. Die neuen 
Epoxidharz-Formmassen sollen einerseits lagerstabil sein, 
wobei andererseits aber gewährleistet sein soll, daß die 
daraus herzustellenden Formstoffe den an diese Werkstoffe 
gestellten Anforderungen genügen.  
     Die Formmassen nach der Anmeldung enthalten als Härter ein 
1.3.5-Tris(3-amino-4-alkylphenyl)-2.4.6-trioxo-hexahydro­
triazin mit einem C₁- bis C₄-Alkylrest.  
     Hüllmasssen für Halbleiterbauekemente
Patent EP-0258914-A3 (EP)
IPC: A61P3/06
Filed: 1985-12-23
Abstract: Compounds of the formula (I) 
  
wherein R₁ is lower alkyl (C₁-C₆) and n is an integer of 1 
to 6, salts thereof and a process for preparation thereof by 
an aldol or Knoevenagel reaction. The compounds are useful 
intermediates for other rhodanine derivatives having an 
excellent aldose reductase inhibitory action.
Patent EP-0273510-A3 (EP)
IPC: G11B17/04
Filed: 1987-12-15
Abstract: Die Erfindung bezieht sich auf ein Gerät zum Aufnehmen 
und/oder Wiedergeben von Signalen auf Informationsplatten 
(2) mit einem lichtoptischen Einschreibe- oder Auslese­
aggregat (54), mit einem Drehteller (53) für die Infor­
mationsplatte (2), mit einem schwenkbar angeordneten 
Plattenandrücker (55) und einem Lademechanismus (6). Der 
Lademechanismus (6) dient dazu, die Platte (2) in das 
Gerät (3) einzuschieben und in Betriebslage auf den Dreh­
teller (53) zu überführen. Weiterhin soll der Lade­
mechanismus die Platte (2) zwischen Plattenandrücker (55) 
und Drehteller (53) zentrieren und festklemmen. Der Dreh­
teller (53) und der Plattenandrücker (55) sind an einem 
Subchassis (50) angeordnet, das von einem Hauptchassis (4) 
getragen wird. Das Subchassis (50) mit dem Aggregat (54) 
und dem Drehteller (53) ist im Hauptchassis (4) um eine 
Schwenkachse (51a) schwenkbar, wobei die Schwenkachse 
(51a) etwa parallel zur Einschieberichtung (10) verläuft 
und die Schwenkbewegung des Subchassis (50) von dem 
Lademechanismus (6) gesteuert wird.
Patent EP-0234901-A3 (EP)
IPC: C23C4/08
Filed: 1987-02-23
Abstract: Flame sprayed aluminum coatings have been shown 
to be of excellent value in providing cathodic protect­
ion to steel structures in a marine environment. 
The common method of applying flame sprayed aluminum 
to a steel substrate comprises providing an anchor 
pattern to the substrate. Such anchor pattern can 
result in fatigue cracking of the substrate developing 
within the surface discontinuities of the anchor pat­
tern. The present invention provides a method for 
providing a layered, ion sputtered aluminum base coating 
on the substrate to which a flame sprayed aluminum 
coating may adhere without the need for a roughened 
surface on the substrate with its consequent potential 
for reduction of fatigue strength.
Patent EP-0244940-A3 (EP)
IPC: B22F3/02
Filed: 1987-03-27
Abstract: A composition is disclosed comprising a ceramic, cer­
met or metal powder material and, as a binder, poly(ethyl­
oxazoline). A process for preparing the composition is 
provided.
Patent EP-0278436-A3 (EP)
IPC: C08G18/18
Filed: 1988-02-05
Abstract: In the preparation of a high resiliency polyurethane foam by react­
ing a polyisocyanate with a polyurea dispersion-containing polyol based 
masterbatch composition also containing a tertiary amine catalyst for the 
polyurethane reaction, the improvement for eliminating cure draft of such 
stored polyol compositions which comprises employing a catalyst composi­
tion consisting essentially of  
    5 to 15 wt% triethylenediamine,  
    20 to 35 wt% 4-(2-dimethylaminoethyl) morpholine,  
    20 to 35 wt% N,N,N′,N′-tetramethyl-1,2-diamino-2-­
methylpropane,  
    10 to 25 wt% bis(dimethylaminoethyl)ether, and  
    5 to 40 wt% of an N-hydroxyalkyl quaternary am­
monium acid salt.
Patent EP-0288899-A3 (EP)
IPC: A47J31/043
Filed: 1988-04-21
Abstract: To let the water pass quickly through the ground coffee 
layer at a temperature below 100°C, the water is heated to 
the desired temperature and is then vacuum drawn through 
the powdered coffee, the vacuum being generated by steam 
cooling and condensation. A coffee machine, consisting of 
an upper vessel (2) which can be tightly connected to a 
lower vessel (1) with the interposition of a coffee filter 
basket (4) is fitted with a rising transfer tube (9) 
extending from just above the bottom of the lower vessel 
(1) upwards to the upper vessel (2) and with a shut-off 
valve (13) which opens in direction of the upper vessel (2), 
while this upper vessel (2) is communicating by means of a 
siphon (19, 20) with the coffee filter basket (4) which, 
in turn, is at its lower end connected to the lower vessel 
(1) by means of a non-return valve (17, 18) that can be 
opened in direction of the lower vessel (1).
Patent EP-0296560-A3 (EP)
Title: Cyclic amine compound, its use and pharmaceutical compositions comprising it
IPC: C07D401/12
Filed: 1988-06-22
Abstract: Cyclic amine cpds. of formula (I) and their salts are new. - J is (a) a gp., opt. substd., of: phenyl, pyridyl, pyrazyl, cyclohexyl, quino(xa)lyl or furyl; (b) a monovalent or divalent gp., where the phenyl may have substit(s), of: indan(ol)yl, (iii) inden(on)yl, indan(edio)hyl, tetralonyl, benzosuberonyl, or C6H5-CO-CH(CH3)-; (c) a monovalent gp. derived from a cyclic amide cpd. (d) lower alkyl; or (e) R21-CH=CH- (R21 = H or (lower alkoxycarbonyl). B = (CHR22)r, CO(CHR22)r, NR4-(HCR22)r, CO-NR5-(CHR22)r, CH=CH-(CHR22)r, OCOO-(CHR22)r, OOC-NH-(CHR22)r, NH-CO-(CHR32)4, CH2CONH-(CHR22)r, (CH2)2CONH-(CHR22)r, CH(OH)-(CHR22)r, CH(OH)-(CHR22)r, = (CH-CH=CH)b, =CH-(CH2)c, =(CH-CH)d, COCH=CH-CH2, COCH2-CH(CH(OH)CH2, CH(CH3)CONHCH2, CH=CHCONH(CH2)2, NH, O, S, dialkylaminoalkylcarbonyl or lower alkoxycarbonyl; R4 = H, acyl, lower alkyl(sulphonyl), (substd.)phenyl, or (substd.)benzyl; R5 = H, lower alkyl or phenyl, r = 0-10; R22 = H or Me such that one alkylene may have no CH3 or one or more CH3; b = 1-3; c = 0-9; d = 0-5; T = N or C (i) Q = N, C or (i) q = 1-3; K = H, (substd.) phenyl, arylalkyl in which the phenyl may be substd. cinnamyl, lower alkyl, pyridylmethyl, cyclo(alkyl)alkyl, adamantanemethyl, furylmethyl, lower alkoxycarbonyl or acyl; and dotted lines is a single-or double-bond. - 1-benzyl-4-((5,6-dimethoxy -1-indanon)- 2-ylidenyl)methyl) piperidine hydrochlorideis and example.
Patent EP-0298324-A3 (EP)
IPC: F16J15/34
Filed: 1988-06-24
Abstract: Die Gleitringdichtung enthält einen fest und abdichtend an einer 
Wandung (2) gehaltenen ersten Ringkörper (3) mit einer ebenen kreis­
förmigen ersten Stirnfläche (5) und einem drehfest und abdichtend 
an einer Welle (1) gehaltenen, in Axialrichtung verschiebbaren und 
durch Federn (4) gegen den ersten Ringkörper (3) vorgespannten zwei­
ten Ringkörper (7), dessen gleichfalls ebene, kreisringförmige zwei­
te Stirnfläche (6) an der ersten Stirnfläche mit einer gemeinsamen 
ringförmigen Dichtfläche (Berührungsfläche) anliegt. Aus der zwei­
ten Stirnfläche (6) sind gleichgeformte, unter gleichen Winkelab­
ständen angeordnete spiralförmig verlaufende Nuten (10) herausgear­
beitet, die sich zwischen die Dichtflächen erstrecken und mit ihren 
inneren Enden Abstand zu der inneren Begrenzungslinie der Dicht­
fläche einhalten. Durch eine relative Drehbewegung wird zwischen die 
Dichtflächen ein gasförmiges Medium eingeschleppt und ein die Dicht­
flächen trennendes Druckpolster aufgebaut. Zwecks Verstärkung dieses 
Druckpolsters nimmt die Tiefe und Breite jeder Nut (10) vom äußeren 
zum inneren Ende kontinuierlich ab und geht die Nutbegrenzungsfläche 
(11a) an ihrer hinten liegenden Antrittskante (12a) unter einem 
Winkel ( α ) von weniger als einer Winkelminute in die Dicht­
fläche (6) über.
Patent EP-0318100-A3 (EP)
IPC: C03B37/012
Filed: 1988-11-23
Abstract: Verfahren zur Herstellung von Glaskörpern, bei dem das 
Ausgangsmaterial für den Glaskörper in Form einer thixo­
tropen Suspension, bestehend aus SiO₂-Partikeln eines 
Durchmessers im Bereich von 10 bis 500 nm als Feststoff 
und Dispergierflüssigkeit zu einem Grünkörper verformt 
wird, wonach der entstandene Grünkörper gereinigt und ge­
sintert wird, wobei die Suspension mit einem Feststoff: 
Dispergierflüssigkeit-Gewichtsverhältnis von 1:1 bis 1:1,5 
über Siebe einer Maschenweite im Bereich von 3 bis 300 µm 
unter Einwirkung von Schall oder Ultraschall abgesiebt, 
die abgesiebte Suspension vorzugsweise durch Abpumpen ei­
nes Teils der Dispergierflüssigkeit unter Vakuum und 
Schall- oder unter Ultraschalleinwirkung auf ein Fest­
stoff:Dispergierflüssigkeit-Gewichtsverhältnis von ≈ 1,3:1 
eingeengt und in eine Form eingebracht wird, die Form mit 
der Suspension auf eine Temperatur unterhalb des Siede­
punktes der Dispergierflüssigkeit erwärmt und der Grünkör­
per nach Abkühlen aus der Form entnommen und den weiteren 
Prozeßschritten zur Herstellung eines Glaskörpers unter­
zogen wird.
Patent EP-0303521-A3 (EP)
IPC: H01L23/532
Filed: 1988-08-15
Abstract: In order to avoid undesirable oxidation during 
firing of a superconducting ceramic material formed on 
a semiconductor device substrate, the superconducting 
material is provided only where the superconducting 
material does not contact an operational region of the 
semiconductor substrate.
Patent EP-0350821-A3 (EP)
IPC: F42B12/10
Filed: 1989-07-08
Abstract: Ein mittels eines Trägers (13) verbringbarer Gefechtskopf (18) soll 
dafür ausgelegt werden, eine wirksamere Bekämpfung von mittelhart 
bis hart gepanzerten Zielobjekten (11) unter leichtem natürlichem 
oder künstlichem Schutz (12) zu erbringen, als der herkömmliche 
Einsatz von mittels eines Geschosses oder einer Rakete verbrachten 
Hohlladungs-Bomblets. Dafür werden einteilige Gefechtsköpfe (18′) 
oder in Verteileinheiten (19) untergebrachte Submunitionen (20) 
eingesetzt, deren Wandungen (42) projektilbildende Belegungen (43) 
mit Brandmassen-Hinterfütterung (44) aufweisen und die konstruktiv 
oder detonatorisch für einen gegenüber der Wandungs-Längsachse an­
steigenden Splitterfächer (46) ausgelegt sind. Die Zündung erfolgt 
mittels eines herausklappbaren oder teleskopierbaren, abwärtsorien­
tierten Stößels (32), der noch nicht beim Durchschlagen des Schutzes 
(12) auslöst, sondern erst beim harten Aufschlag im oder neben dem 
Zielobjekt (11). Sollte sich ein aerodynamisches Bremsmittel (29) 
eines einteiligen Gefechtskopfes (18′) bzw. einer Submunition (20) 
im Schutz (12) verfangen, erfolgt eine Umorientierung des Splitter­
fächers (46) nach unten.
Patent EP-0356972-A3 (EP)
Title: Method for the preparation of beta-alanine-diacetic acid or its alkali metal or ammonium salts
IPC: C07C227/18
Filed: 1989-08-29
Abstract: Preparation of  beta -alaninediacetic acid (Ia) or its alkali metal or ammonium salts (Ib) by reacting iminodiacetic acid and acrylic acid
 a) with one another in non-basic aqueous medium for the preparation of Ia and
 b) with one another in alkaline or nigrogen-basic aqueous medium for the preparation of Ib
 or converting the Ia formed in non-basic medium into Ib using an alkali metal base, ammonia or an amine.
Patent EP-0362894-A3 (EP)
Title: Vacuum cleaner and method for operating the same
IPC: A47L9/19
Filed: 1989-10-06
Abstract: An output of an electric driven blower (2) in a 
cleaner main body (1) is controlled in response to a 
detection value of a pressure sensor (12) which detects 
an operation condition in the cleaner main body (1). A 
change-over level setting value (C₁ , C 1′ ) is provided as 
an control value for the sensor (12) so as to form a 
judgement point for changing over a control condition of 
the blower. A return level setting value (C R′  C 2′ ) is 
provided as a control value for the sensor so as to form 
a judgement point for returning to a previous control 
condition of the blower (2) from a changed-over condition 
of the blower. When the detection value of the sensor 
(12) is more than the change-over level setting value, 
the return level setting value is set higher than the 
change-over setting value, thereby the output of the 
blower (2) is increased, or the return level setting 
value is set a lower than the change-over level setting 
value, thereby the output of the blower is decreased.
Patent EP-0384978-A3 (EP)
IPC: D01H9/10
Filed: 1989-12-23
Abstract: Transport- und Handhabungssystem für Vielstellen-­
Textilmaschinen, insbesondere Zwirnmaschinen, mit 
einem ersten Laufschienensystem (1), dessen Laufweg 
an den Längsseiten der Maschinen (Z1, Z2, Z3) ent­
langführt und auf dem mindestens ein Handhabungs­
automat (3) zur Ausführung von Bedienungsvorgängen 
geführt ist, und mit einem zweiten Laufschienen­
system (2), dessen Laufweg ebenfalls an den 
Längsseiten der Maschinen (Z1, Z2, Z3) entlang­
führt und auf dem zu Zügen zusammenkoppelbare 
Transporteinrichtungen zur Aufnahme von Arbeits­
gütern und/oder Arbeitsmitteln geführt sind. Die 
Laufwege der beiden Laufschienensysteme (1, 2) 
verlaufen mindestens abschnittsweise derart parallel 
zueinander, daß der Handhabungsautomat (3) einer­
seits an die Transporteinrichtungen ankoppelbar und 
andererseits an ihnen vorbeibewegbar ist. Der 
Handhabungsautomat (3) besitzt eine Koppel-Antriebs­
vorrichtung zur Mitnahme der Transporteinrichtungen 
(4) auf den parallel zueinander verlaufenden Lauf­
wegabschnitten sowie zur Erzeugung von Relativ­
bewegungen zwischen Handhabungsautomat (3) und 
Transporteinrichtungen (4) sowohl bei stillstehendem 
als auch bei bewegtem Handhabungsautomat (3).
Patent EP-0323897-A3 (EP)
Title: Preparation of 4,4'-diphenoxybenzophenone
IPC: C07B61/00
Filed: 1989-01-05
Abstract: A method of preparing 4,4′-diphenoxybenzophenone, 
comprising reacting diphenyl ether and carbon dioxide in the 
presence of a Friedel-Crafts catalyst and a promoting agent, 
preferably selected from the group consisting of phosphoryl 
chloride, phosphorus pentoxide, tetrachlorosilane, methyl­
trichlorosilane, dimethyldichlorosilane, titanium tetra­
chloride, zirconium tetrachloride, zirconium oxyhalide, and 
phosphorus pentachloride. In a preferred embodiment, the 
Friedel-Crafts catalyst is aluminum chloride and the 
dehydrating agent is phosphoryl chloride.