baber/WOPTO huggingface dataset:
Patent GB-1317694-A (GB)
Title: Polyarylene polyether membrane
IPC: C08J9/28
Filed: 1971-10-26
Abstract: 1317694 Polyarylene-ether coated fabrics RHONE-POULENC SA 26 Oct 1971 [27 Oct 1970] 49757/71 Heading B2E [Also in Divisions B5 and C3]  A membrane consisting essentially of a polyarylene polyether comprising recurring units of the formula: in which Q represents a phenyl radical, Q' represents a phenyl radical, a phenyl radical substituted by 1 to 5 alkyl radicals having 1 to 8 carbon atoms, or a biphenylyl, terphenylyl or naphthyl radical, A, (which may either be a substituent on the basic phenylene chain member or a substituent on Q or Q') represents a halogen atom, y, the value of which can vary from one recurring unit to another, is 0, 1, 2, 3 or 4 and x is such that the specific viscosity of the polyether is 0.3-1.5, measured at 25C, as a 5g/litre solution in cyclohexanone, the membrane comprising a dense layer of average thickness 0.01-10Á, and thereunder a porous layer, with open pores, of average thickness 30Á-1mm., the total volume of the pores representing 20-80% of the total volume of the membrane, is prepared by a) casting onto a support a solution of the polyarylene polyether in a binary mixture of two solvents for the polymer, having boiling points differing by at least 30C, onto a support; b) removing at least a part of the more volatile solvent without exceeding the boiling point of this more volatile solvent; c) treating the resulting film thus obtained with a coagulating liquid; and d) drying the film resulting from c). Suitable solvents used are aliphatic and aromatic hydrocarbons, halogenated hydrocarbons and aprotic polar solvents such as N-methylpyrrolidone-2, dimethylformamide and dimethylacetamide. A suitable solvent mixture is dichloromethane and N-methylpyrrolidone-2. Examples of coagulating liquid are water, alcohols and ketones. A particularly preferred coagulating liquid is methanol. In general the weight of the more volatile solvent in the solvent mixture is 10-70% by weight of the solvent mixture and the concentration of polymer in the solution is 5-40% by weight based on the weight of solution 15-100% by weight of the more volatile solvent may be removed prior to step c). The object of treating with coagulating liquid is to set or gel the polymer solution or to complete any initial gel formation. This treatment is preferably carried out at room temperature. The final stage may be carried out at temperatures up to 100C. The support used for casting may be a glass plate or a metal belt (continuous casting). Depending on the shape of the support membranes of various shapes, e.g. planar and tubular, may be made. The membrane may also be reinforced by a fabric screen such as a woven fabric, e.g. a polyamide or polyester woven fabric, or a non-woven fabric of natural or synthetic fibres. Such membranes are prepared by casting onto the screen borne by the support. The membranes of the invention find application in the fractionation of gas mixtures.
Patent GB-1237232-A (GB)
Title: Production of cis-1,2-propenylphosphonic acid
Inventor: GLAMKOWSKI EDWARD JOSEPH
IPC: C07F9/40
Filed: 1968-10-24
Abstract: 1,237,232. cis-1,2-propenyl phosphonic acid and intermediates therefor. MERCK & CO. Inc. 24 Oct., 1968 [15 May, 1968], No. 50628/68. Heading C2C. cis-1,2-Propenylphosphonic acid (I) is obtained by reacting phosphorus trichloride with at least two equivalents of a C 1 -C 5  alkyl, or C 2 -C 5  alkenyl alcohol or an alkalkyl alcohol, or a phenol, or with at least one equivalent of a dihydric phenol, e.g. catechol or of a C 2 -C 5  alkylene glycol in an inert organic solvent, reacting the resulting diorgano phosphorochloridite (II) with propargyl alcohol to form a 2- propynyl di-organo-phosphite (III), rearranging the latter to form the corresponding allenyl phosphonic acid diester (IV), hydrogenating the latter to form the cis-1,2-propenyl phosphonic acid diester (V) and cleaving the latter to form the free cis-1,2-propenyl phosphonic acid (I), the process being generally carried out without isolating the intermediate compounds. The 2-propynyl diorganophosphite (III) gradually rearranges on standing to form (IV) but the rearrangement is preferably effected by heating the mixture at 50-100 C. or to reflux, the heating being preferably carried out in an inert atmosphere, e.g. of N 2  or helium. The diester (IV) is then hydrogenated, preferably catalytically, in order to form the diester (V). Suitable hydrogenation catalysts are Pd/C, Pd/CaCO 3  and Raney nickel. The free olefinic acid (I) may be obtained from the cis-olefinic diester (V) by acid or base-acid hydrolysis or where appropriate by pyrolysis in the absence of a solvent. Where, however, the ester group in (IV) is aralkyl or substituted aralkyl, e.g. benzyl or chlorobenzyl, the hydrogenation step additionally serves to remove the ester groups thus yielding (I) directly. When acid is used in the ester cleavage of (V) to (I) the acid may be (I) itself or may be a strong mineral acid or an organic acid, e.g. benzene sulphonic acid or p-toluene sulphonic acid. Acidic ion exchange resins and catalytically acidic surfaces, e.g. sea sand, silica gel or acid washed alumina may also be used. When pyrolysis is used to cleave the ester it is suitably effected at 85-200 C. in the presence or absence of an acid catalyst. The reaction in the first two steps may be carried out in the presence of an acid-binding agent, e.g. a tertiary amine, or an oxide such as propylene oxide. In a modification of the process the allenylphosphonic acid diester (IV) is rearranged to form an α,#-propynylphosphonic acid diester and the latter hydrogenated to produce the cisolefinic diester (V) which is then cleaved. The cis-propenyl phosphonic acid product may be converted to the antimicrobial agent () (cis- 1,2-epoxypropyl)-phosphonic acid by oxidation with H 2 O 2  either directly or by first converting to the monobenzylamine salt prior to the oxidation. The invention also includes per se the compound di-t-butylallenyl phosphonate obtained as an intermediate in the third step of the process using the appropriate reactants.
Patent GB-1162059-A (GB)
Title: Curable Mixtures containing Triazine-Epoxy Resins
IPC: C08G59/26
Filed: 1967-11-07
Abstract: 1,162,059. Triazine epoxy resins. CIBA Ltd. 7 Nov., 1967 [8 Nov., 1966; 5 Oct., 1967], No. 50675/67. Heading C3B. A curable mixture comprises: (I) triglycidyl isocyanurate; (II) a glycidyl compound different from I, which is preferably a di- or triglycidyl compound, and which contains a 5- or 6-membered nitrogenous heterocyclic ring; and (III) an epoxy resin curing agent. Examples of II are; N,N<SP>1</SP>.diglycidylhydantoin; N,N<SP>1</SP>-diglycidyl - s - methylhydantoin; N,N<SP>1</SP> - diglycidyl ethyleneurea; N,N1 - diglycidyl propylene urea; N,N<SP>1</SP>,N<SP>11</SP> - tri - (3 - glycidyloxypropionyl) hexahydro - s - triazine; and triglycidyl cyanurate. Preferred curing agents are polycarboxylic acid anhydrides but lists of other conventional materials are quoted.
Patent GB-1104119-A (GB)
Title: A process for the bulk preparation of vinyl chloride polymers and copolymers in two stages
IPC: C08F14/06
Filed: 1965-11-30
Abstract: Vinyl chloride homo- or copolymers are produced by bulk polymerization of the monomer(s) in two stages, the first stage consisting of a pre-polymerization in a vessel with vigorous agitation of the reactants until 7 to 15% of the monomer(s) has been converted and the second stage being carried out in a different vessel or vessels in which the reaction medium is agitated less vigorously, the first and the second stage being carried out in the presence of different catalysts, the second stage catalyst having a lower rate of decomposition than the first stage catalyst under the reaction conditions prevailing during the second stage.  Examples of the first stage catalyst are sulphonyl acetyl cyclohexane peroxide (SACP), dichloroacetyl peroxide and trichloroacetyl peroxide and of the second stage catalyst are (1) azodiisobutyronitrile, (2) lauroyl peroxide and (3) isopropyl peroxydicarbonate. The catalysts are added together in the first stage or the second stage catalyst is added during transfer of the monomer-polymer mixture to the second vessel or directly to said vessel.  In the examples polyvinyl chloride and vinyl chloride-vinyl acetate copolymers are produced using a catalyst combination of SACP and (1), (2) or (3), the average particle size of the polymers being in the range 100 to 250 microns.
Patent GB-1203236-A (GB)
Title: Process for the manufacture of fluorinated aliphatic hydrocarbon compounds
IPC: C07C17/20
Filed: 1967-11-13
Abstract: 1,203,236. Disproportionation process. FARBWERKE HOECHST A.G. 13 Nov., 1967 [12 Nov., 1966], No. 51525/67. Heading C2C. C 1-4  fluorinated aliphatic hydrocarbons are obtained in a halogen-exchange process in which a halogenated saturated C 1-4  aliphatic hydrocarbon, which contains the grouping wherein X is a chlorine or bromine atom, or a mixture of such a halogenated hydrocarbon wherein X is a fluorine, chlorine or bromine, with at leact one fluorine-free halogenated saturated C 1-4  aliphatic hydrocarbon which contains the grouping wherein each of X and Y is a chlorine or bromine atom, is contacted at 20‹ to 500‹ C. with a catalyst which has been obtained by reacting a hydrated oxide of Cr<SP>III</SP> with hydrogen fluoride at 150‹ to 600‹ C. C 1-4  fluorine-free halogenated hydrocarbons may also be obtained by the above process (e.g. chloroform and carbon tetrachloride).
Patent GB-1385628-A (GB)
Title: Energy absorbing steering column
IPC: B62D1/19
Filed: 1973-11-07
Abstract: 1385628 Collapsible steering columns FORD MOTOR CO Ltd 7 Nov 1973 [4 Dec 1972] 51656/73 Heading B7H A collapsible steering column comprises a plastically deformable member 34 mounted on an outer column tube 21 which rotatably supports a steering shaft 24, the member 34 being free, during normal use from torsional and bending loads. Shaft 24 has upper and lower parts 26, 25 held in the normal position by friction or frangible means 27, the parts telescoping when the steering wheel is subjected to impact. Tube 21 is attached by supports 14, 16 to a vehicle bracket 12, the support 16 acting as a breakaway guide and support 14 constituting an energy absorbing device. Support 16, Fig. 4, includes a pair of clamps 56, 57 bolted to bracket 12, each of which carries a rubber member 54, 55 which encloses a low friction plastic member 52, 53. Members 52, 53 abut metal clips 46, 47 fixed about the tube and allow axial movement of the tube when impact is experienced at the steering wheel. Support 14, Fig. 3, includes a collar 68 having inwardly directed projections 76 which engage short axial grooves 78 in the tube 78. On axial displacement of the tube the projections slide to the groove ends and then deform the tube.
Patent GB-1150745-A (GB)
Title: Optical Projection Systems
Inventor: COOMBS GORDON MAURICE
IPC: G03B21/60
Filed: 1965-11-11
Abstract: 1,150,745. Optical projection systems; programme control. KODAK Ltd. Nov. 10, 1966 [Nov. 11, 1965; Dec. 7, 1965], Nos. 47827/65 and 51876/65. Headings G2J and G3N. A projection system comprises a screen 2 formed by liquid droplets which receives images from an optical slide or cine projector 4. Horizontal pipe 1 is supplied with water which issues from spaced fish-tail jets to form the screen by a series of overlapping sheets of water. The system may be used for image projection or for light effects and may include more than one projector. Stereoscopic projection is possible with stereo or other sound, the system and the water supply being controlled by means of a multi-channel magnetic tape. The screen may rise and fall and may receive images on both sides. The water-jets may be directed upwardly or downwardly.
Patent GB-1019898-A (GB)
Title: Phase discriminator
IPC: G06F7/68
Filed: 1962-09-05
Abstract: 1,019,898. Phase discriminators. GENERAL ELECTRIC CO. Sept. 5, 1962 [Sept. 5, 1961 (2)], No. 51949/64. Divided out of 1,019,896. Heading H3A. In an extended range (exceeding 360 degrees) phase discriminator a square wave command pulse train and a square wave position resolving pulse train, both e.g. of rate 250 c/s., are applied on leads 19, 70 respectively to bi-stable circuits 801, 802 which are re-set immediately afterwards by the first pulses of re-set pulse trains of higher frequency, eg. 25 kc/s., on leads 801d, 802d, the re-setting producing pulses respectively applied to count-up and countdown inputs to a reversible counter 810 comprising multi-stage binary counters. This counter registers the phase difference between the pulse trains in terms of cycles and a fraction of a cycle of the 250 c/s. pulse period is indicated by a digital to analog converter 849 also acted upon by the counter 810 and comprising diode switching circuits generating a staircase wave and feeding an operational amplifier 822 so that an analog output of the total phase shift is produced across a filter 819. This output may operate a servomotor controlling e.g. a machine tool whose tool position is indicated by the position resolving pulse train on lead 70. The re-setting pulses to bi-stable circuits 801, 802 may be in anti-phase to avoid the counter 810 being actuated simultaneously by different pulse trains. The counter 810 may have 16 states but may be connected to register only a maximumerror of Œ 3 cycles (periods) of the 250 c/s. pulse trains, with greater errors producing the same maximum speed of the servomotor. The D/A converter 849 may be of diode switched type. Additional outputs from bi-stable circuits 801, 802 (in their brief actuated positions before being re-set), may be applied as short pulses on leads 801h, 802h to the D/A converter 849 to correct for any error due to the short delay in operating the counter 810. The position resolving square, wave train may be obtained from a resolver (with sine and cosine wave inputs) and the angular position of whose rotor indicates the position in an X or Y direction of a machine tool [see Specification 1,019,896, Division G3]. The resolver sine wave output of variable phase is then limited to a square wave.
Patent GB-1524729-A (GB)
Title: Process for the manufacture of aminonitro-anthraquinones
IPC: C07C205/47
Filed: 1975-12-19
Abstract: 1524729 Preparing aminonitroanthraquinones CIBA-GEIGY AG 19 Dec 1975 [19 Dec 1974] 52230/75 Heading C4P α,α<SP>1</SP>-Aminonitroanthraquinones are prepared by reacting an α,α<SP>1</SP>-dinitroanthraquinone with ammonia at a temperature of at least 60 C. in a dipolar aprotic solvent having a dielectric constant of at least 30 which is inert to ammonia, the starting materials and the reaction products. The ammonia may be gaseous and the dipolar aprotic solvents have the general formulae R 1 -SO 2 -R 2 , X:::So 2  or R 1 -SO 2 -R 3 -SO 2 -R 2  wherein R 1  and R 2  are straight or branched C 1 -C 4  alkyl, X is an optionally substituted straight or branched C 4 -C 10  hydrocarbon chain and R 3  is C 1 -C 4  alkylene, and include tetramethylene sulphone. Other solvents include dimethyl formamide, dimethyl acetamide and tetramethylurea. The products may be recovered by recrystallizing from 40-80% H 2 SO 4 .
Patent GB-1433837-A (GB)
Title: Plastics barrel
IPC: B65D45/32
Filed: 1973-11-12
Abstract: 1433837 Portable containers ELBATAINER KUNSTSTOFF - UND VERPACKUNGS GmbH and SULO EISENWERK STREUBER & LOHMANN 12 Nov 1973 [11 Nov 1972] 52372/73 Heading BSD A plastics barrel comprises a pair of identical nestable and releasably-interconnectible barrel halves, each having a rim portion provided with a ring of circumferentially-alternating and matching axial projections 14 and recesses 15, the projections on one half being received in the recesses of the other on assembly and clamped by a band 17. The projections are provided with steps 16 to locate the band, and each barrel half is provided with supplementary, circumferentially-alternating tongues 19 and recesses 20, Fig. 3 (not shown), the tongues of each barrel half being received by the recesses of the other. In a modification, Figs. 4 and 5 (not shown), the tongues 19 and recesses 20 are replaced by projections 22 extending from an annular groove 21, and the base surfaces of the recesses 15 are inclined so that when the band, which has an inverted V-shaped profile on its underside, is tightened, the end faces of the barrel halves are urged together. Web-reinforced, L-shaped rolling rings 25 are provided and project radially at least as far as the end stops 16 on the projections 14. The barrel is provided with an inner flexible plastics bag 18 clamped to a socket 10c of one of the barrel halves.
Patent GB-1267437-A (GB)
Title: Improvements in and relating to a method of and apparatus for testing tire and industrial cords
Inventor: LITZLER CYRIL ALOYSIUS
IPC: G01N3/08
Filed: 1969-10-27
Abstract: 1,267,437. Testing filamentary material. C. A. LITZLER. Oct.27, 1969, No.52421/69. Addition to 1,184,586. Heading G1S. The apparatus of the parent Specification is modified in that electrical control means, Figs.4, 5, are provided for selectively driving the hold back capstan 23, Fig.3, and a take-up capstan 24 with a positive uniform speed differential to provide a constant elongation of the filament passing through the loop or in response to a tension measuring load cell or strain gauge 33, Fig. 2, to provide a constant tension in the material passing through the loop.
Patent GB-1587930-A (GB)
Title: Spray printing process
IPC: D06P1/00
Filed: 1977-12-19
Abstract: Bulky textile sheet structures, in particular carpets, can be dyed in sharply defined locations by a spray-printing dyeing method using a dyeing liquor containing a thickener of natural origin by pretreating the textile material with a coagulating agent.
Patent GB-1455243-A (GB)
Title: Pneumatic tyres
IPC: B60C15/06
Filed: 1972-11-16
Abstract: 1455243 Rubber compositions DUNLOP Ltd 7 Nov 1973 [16 Nov 1972] 52909/72 Heading C3Q [Also in Division B7] A rubber composition for use in pneumatic tyre constructions (see Division B7) which has a hardness of 80 to 83 BS and a resilience, measured at 50 C. according to BS 903 Part A8 Method C, of 65 to 67%, comprises natural rubber, styrene butadiene rubber, sulphur, diphenyl guanidine, a benzothiazole hexamethylene tetramine, N - nitrosodiphenylamine, stearic acid, mineral oil, aromatic oil, other resins, carbon black, pentachlorothiophenol and zinc oxide.
Patent GB-1527370-A (GB)
Title: Communication network
IPC: H04Q11/04
Filed: 1975-12-29
Abstract: 1527370 Automatic exchange systems INTERNATIONAL BUSINESS MACHINES CORP 29 Dec 1975 [30 Dec 1974 (5) 26 June 1975] 52960/75 Heading H4K The Specification relates to the network access units, NAU, of the satellite communication system disclosed in American Specification 4,009,343 and the particular emphasis is on the function of the NAU as regards the reordering of information received from the satellite and the generation of a destination oriented VAC mask from the VAC masks transmitted by the branch exchanges 10. A full description of the complete system is given in US. The NAU receives from each branch exchange 10 in each 6 m.s. period a frame comprising a signalling channel, a VAC mask and 46, 24 byte, blocks of telecommunication traffic information. The VAC mask and the traffic bytes for each trunk are received in a respective input buffer INTICS and are then transferred to one of eight storage compartments of traffic buffer 12.2 to be eventually passed to the satellite as a traffic burst. Incoming traffic from the satellite for distribution at the NAU is stored in another partition of the traffic buffer 12.2. The VAC masks are recovered at 12.3 and are used to distinguish channels of traffic information scheduled for handling by the particular NAU 12. The masks are retained and utilized to perform relocational mapping of traffic buffer addresses containing the received traffic information relative to virtual channels of outletassociated digital links to which the information is to be passed. Thereafter the information is processed in virtual channel order to perform a reverse activity comparison when the virtual channel load of any branch digital trunk exceeds the actual link capacity of 46 channels, and also to form a destination-oriented VAC mask for each trunk. The unit utilizes stored programme control. For further details of the NAU and the rest of the system reference is directed to the above Specifications.
Patent GB-1291997-A (GB)
Title: Method and apparatus for extrusion of synthetic resinous materials
Inventor: CHISHOLM DOUGLAS STEWART
IPC: B29C48/05
Filed: 1969-10-30
Abstract: 1291997 Screw mixers DOW CHEMICAL CO 30 Oct 1969 53246/69 Heading B1C [Also in Division B5] Fibrous reinforced plastics material is delivered with decreased surging, and decreased breakage of fibrous reinforcement, through a heated screw extrusion or injection barrel incorporating a screw which is of decreasing compression at least at the feed end thereof and at a downstream location where the material is heated and is molten. Figs. 2-4 (not shown) respectively illustrate screw configurations in which the decreased compression is obtained by a pitch which progressively increases to the screw discharge end, a root diameter which progressively decreases to a constant diameter prior to the discharge end, and a land width which progressively decreases in width to the discharge end. In the Fig. 1 embodiment of extrusion apparatus the extruder barrel 19 is heated by means 25 in two heating zones, and a hopper 32 at a feed inlet port 30 is supplied with material from a liquid supply 16 and/or through a control valve 14 of a supply hopper 12. The fibrous reinforcement, as 10 to 15 weight per cent of the plastics, is preferably metal, or glass fibres as roving or chopped strand, and may be fed to the hopper 32 as a mixture with particulate plastics from the hopper 12, or in a separate stream from the particulate resin and which may comprise continuous filament which is broken within the barrel. A fibre reinforced strand 35 issuing from the orifice 34 of a die 22 is cooled by means 36 prior to comminution between co-operating elements 38, 39. The resins may comprise glass fibre reinforced polystyrene or styrene-acrylonitrile. Calcium carbonate or titanium oxide particulate filters may be employed with other specified additives. Preferably the screws comprise a pitch to overall diameter ratio of at least 0.4, and preferably of 0.5 increasing to unity or 2.5 at the discharge end. In the Fig. 5 embodiment of injection apparatus, the screw 70 which is selectively axially positionable, increases in pitch to the termination thereof adjacent an unflighted mixing head 72, within a barrel 63 heated by means 67 and supplied with thermoplastic or thermosetting plastics and reinforcement from sources 78, 79. The screw 70 is simultaneously rotated and retracted in the barrel 63 with a nozzle valve 82 closed and after locating a mould 84 against the nozzle 81, the valve 82 is opened and the screw 70 advanced to fill the cavity 86.
Patent GB-1116339-A (GB)
Title: Improvements in or relating to buildings such as garages
IPC: E04H6/06
Filed: 1965-12-21
Abstract: 1,116,339. Mechanical garages. H. E. A. PEACOCK. 20 Dec., 1966 [21 Dec., 1965], No. 54191/65. Heading B8E. [Also in Division E1 A ramp 15 is adapted to be withdrawn from an inoperative position beneath the upper floor 5 of a multi-storey garage to the operative position shown by an electric motor driving chains 25 disposed on either side of the ramp which carries rollers 28 guided in tracks embedded in the side walls 33 of the garage. The leading edge 18 of the ramp has a limit switch and pressure plate 34 for detecting obstructions which means 34 is connected in a circuit of the motor incorporating " stop-go " lamps 37, 38.