baber/WOPTO huggingface dataset:
Patent ES-318688-A1 (ES)
Title: Improvements in or relating to the manufacture of foamed polyurethanes
IPC: C08G18/00
Filed: 1965-10-20
Abstract: Foamed polyurethanes are prepared by reacting an 80/20 mixture of tolylene 2,4 and 2,6-diisocyanates with a polyester containing more than two isocyanate-reactive groups per molecule optionally in the presence of catalysts for polyurethane foam production and water, the reaction mixture also containing a water-soluble salt of an acid ester of a polybasic acid, said acid ester containing a hydrophobic polyether chain and a polyoxyethylene ester of an aliphatic monocarboxylic acid containing 10 to 20 carbon atoms or a block copolymer of ethylene oxide and an alkylene oxide which contains at least three carbon atoms in the molecule. The polyesters may be prepared by reacting polyhydric alcohols with polycarboxylic acids one of which contains more than two reactive groups in the molecule. Suitable substances containing more than two reactive groups in the molecule are glycerol, trimethylolethane, trimethylolpropane, triethanolamine, pentaerythritol, dihydrostearic acid, trimesic acid and trimellitic acid. The acid esters can be those of hydroxyl group containing polyether products of the polymerization of cyclic oxides containing more than two carbon atoms per molecule with such acids as sulphuric and phosphoric aliphatic and aromatic polycarboxylic acids. The preferred acid esters are sulphuric acid esters of a hydroxyl group-containing polypropylene oxide in the form of their ammonium or alkali metal salts or their salts with tertiary, secondary or primary amines. Suitable polyoxyethylene esters are those prepared by condensing ethylene oxide with lauric, palmitic, stearic, linoleic, ricinoleic and especially oleic acid. Preferred block copolymers are those derived from ethylene- and 1,2-propylene-oxide. Halogenated hydrocarbons may be used as auxiliary blowing agents. Suitable catalysts are tertiary amines and organic compounds of metals particularly those of tin, iron, manganese and lead. Flame retardants such as tris-b -chloroethylphosphate, antimony oxide or tris-2,3-dibromopropyl phosphate may also be incorporated into the reaction mixture.
Patent ES-337711-A1 (ES)
Title: Preparation of lubricant additives with reduced odor
IPC: C10M133/56
Filed: 1967-03-07
Abstract: Lubricating and fuel oil additives are prepated by reacting in a liquid medium at 50 DEG to 175 DEG C. a mixture of (A) a reaction product of an alkylene polyamine with a succinic acid-producing substance containing a substantially hydrocarbon substituent of at least 50 carbon atoms, and (B) not more than 0.1 weight per cent based on (A) of a C1- 4 aliphatic aldehyde or reversible polymer thereof. The hydrocarbon substituent may be derived from saturated petroleum fractions or polymers of C2- 30 mono-olefins e.g. ethylene, propylene, butene-1, isobutylene and octene-1. Preferred reactants (A) are prepared by reacting an olefin polymer such as polyisobutylene with maleic acid or anhydride, optionally converting the product to the acid chloride by reacting with phosphorus pentachloride or thionyl chloride, and reacting with a polyalkylene polyamine containing up to 10 amino groups. Specified reactants (B) are formaldehyde, acetaldehyde, propionaldehyde, butyraldehyde, crotonaldehyde, glyoxal, trioxane, paraformaldehyde and paraldehyde. In examples, polyisobutenyl succinic anhydrides are reacted with (1, 2 and 5) mixed polyethylene polyamines and subsequently (3) terephthalic acid, and with (4) a reaction product of mixed polyethylene polyamines and acrylonitrile and the products reacted with (7 and 8) formaldehyde, (9) paraldehyde, (10) paraformaldehyde, (11) crotonaldehyde and (12) glyoxal.ALSO:Lubricating and fuel oil compositions comprise dispersant additives prepared by reacting in a liquid phase at 50 to 175 DEG C. a mixture of (A) a reaction product of a polyalkylene polyamine with a succinic acid producing substance containing a substantially hydrocarbon substituent of at least 50 carbon atoms and (B) not more than 0.1 weight per cent based on (A) of a C1- 4 aliphatic aldehyde or reversible polymer thereof. The hydrocarbon substituent may be derived from saturated petroleum fractions or polymers of C2- 30 mono-olefins, e.g. ethylene, propylene, butenes and octene-1. Preferred reactants (A) are prepared by reacting an olefin polymer, e.g. polyisobutylene with maleic acid or anhydride, optionally converting the product to the acid chloride by reacting with phosphorus pentachloride or thionyl chloride, and reacting the product with a polyalkylene polyamine containing up to 10 amino-groups. Specified reactants (B) are formaldehyde, acetaldehyde, propionaldehyde, butyraldehyde, crotonaldehyde, glyoxal, trioxane, paraformaldehyde and paraldehyde. The compositions may also contain conventional antioxidants, e.g. 4,41-methylene bis (2,6-di-t-butylphenol). Examples describe compositions of mineral oils containing reaction products of formaldehyde, paraldehyde, paraformaldehyde, crotonaldehyde and glyoxal with reaction products of polyisobutenyl succinic anhydrides with mixed polyethylene polyamines and optionally terephthalic acid, and with a reaction product of mixed polyethylene polyamines and acrylonitrile.
Patent ES-339686-A1 (ES)
Title: Multicorrelator for analogue signals employing pulse width-amplitude multiplication and operating in real time
IPC: H03K7/08
Filed: 1967-04-24
Abstract: In a pulse modulation network the output of a bootstrap generator 45 is added to a signal Y(t) and a short-time response amplifier 54 detects the sign of the addition waveform, the output of the amplifier being a train of width modulated pulses representing the amplitude variation of Y(t). The pulses g, Fig. 8, controlling the bootstrap generator are derived from a square waveform through a differentiating network 42 and rectifier 43, and the bootstrap generator output sawtooth waveform is added to Y(t) in a resistive adding network 50 the adding circuit output voltage (Fig. 7, not shown) is then passed through an impedance matching circuit 55 to the amplifier 54.
Patent ES-341016-A1 (ES)
Title: Process for the preparation of an aqueous montan resin dispersion as well as processfor the impregnation of fibrous and textile products therewith
IPC: C08L25/08
Filed: 1967-05-26
Abstract: Montan wax resins are emulsified in water with the aid of condensation products of higher aliphatic alcohols and polyethylene oxides. Sodium salts of alkyl naphthalene sulphonic acids may be incorporated as ionic surfaceactive agents.
Patent ES-347183-A1 (ES)
Title: Process for the recovery of adiponitrile from an electrolytic hydrodimerization by directly distilling the catholyte emulsion
IPC: C25B3/29
Filed: 1967-11-15
Abstract: In a process for recovering adiponitrile from an adiponitrile-containing reaction mixture obtained in the electrolytic dimerization of acrylonitrile using a catholyte which is kept in an emulsion state and which contains a supporting electrolyte, the emulsified catholyte (if desired after allowing it to settle out into two phases, i.e. an oil phase and an aqueous phase, removing a part of the aqueous phase thus separated therefrom, and recombining the oil phase and the remaining aqueous phase) is distilled in an acrylonitrile rectifying tower to remove a part of the acrylonitrile and water therefrom and the residue obtained is separated into two phases, i.e. an oil phase and an aqueous phase, and adiponitrile is recovered from the oil phase thus separated, the supporting electrolyte being capable of separating the concentrated residue obtained by distillation of catholyte into the two phases. The aqueous phase component separated from the residue in the acrylonitrile rectifying tower may be recycled to the catholyte tank, while the oil phase component comprising adiponitrile, water and a supporting electrolyte may firstly be extracted with water and/or a saturated solution of acrylonitrile and the adiponitrile subsequently recovered by charging said oil phase to a lower boiling component separator from the top of which a distillate comprising water, acrylonitrile and ethylene cyanohydrin is obtained and from the bottom of which is obtained a residue comprising adiponitrile and also, as impurities, biscyanoethyl ether and acrylonitrile oligomer, which residue is charged to an adiponitrile rectifying tower from the top of which purer adiponitrile is distilled and from the bottom of which is obtained a residue comprising adiponitrile, biscyanoethyl ether and acrylonitrile oligomer which is charged to an adiponitrile stripper, the vapour from the top of which is supplied to the lower boiling component separator, leaving a liquid residue of acrylonitrile oligomer, biscyanoethyl ether and supporting electrolyte which is withdrawn. As an alternative the whole of the distillate from the acrylonitrile rectifying tower may be supplied to a propionitrile separator in which propionitrile and water are left as a residue as acrylonitrile and water are distilled off, the acrylonitrile being recycled to the catholyte tank. The supporting electrolyte in the catholyte employed should be capable of separating the concentrated residue obtained by distillation of catholyte consisting of the oil and aqueous phases into two phases and may be, for example, a sulphate, halide, monomethyl sulphate or monoethyl sulphate which contains as cation a quaternary ammonium, ammonium or alkali metal ion. Other conventional additives may be present and a suitable flow diagram for the process is described.
Patent ES-347220-A1 (ES)
Title: Pressure balanced annular extrusion die
IPC: B29C48/33
Filed: 1967-11-07
Abstract: A circular rotating die for extruding thermoplastic films or nets comprises an inner die member 35 and 54 with a lip 41 and an outer die member 43 with a lip 42, the lips defining the extrusion orifice 40, a reservoir 39 adjacent the orifice and a passage 53 through the inner die for conveying the thermoplastic material from the crosshead 52 to the orifice 40. As shown, the inner die member comprises an upper section 35 and a lower section 54 bolted to the upper leaving a gap 38. This section is rotated on bearings 37 in the mould framework 36 by sprocket 50 and is connected to the crosshead 52 by packing gland 34. The outer die member is rotated by sprocket 49 on bearings 44 attached to the mould framework 47 and is held in position by the overlap of member 48 and framework 47. Immediately upstream of the orifice 40, the space between the die increases to form a reservoir 39, which, in combination with the horizontal passage 38 balances nearly all the internal pressure in the die. When used for the production of netting each lip may contain a series of complementary orifices or a set of holes spaced annularly about the axis of rotation. The thermoplastic materials may be polyamides, polyesters, P.V.C. and copolymers with vinylacetate or vinylidene chloride, polyethylene and copolymers, cellulose acetate, natural or synthetic rubbers and foamable plastic material such as polystyrene and polyethylene.
Patent ES-350869-A1 (ES)
Title: Device for automatically sewing the toes of seamless stockings
IPC: D05B23/00
Filed: 1968-02-23
Abstract: A sewing machine for seaming the toe of d tubular knit stocking comprises a template 5 over which the toe portion is placed, the template then being rotated to a position between the jaws of a clamp 1 which remove the stocking a from the template and carry it past a sewing machine 4. Further clamping jaws 2, 3 are provided and once the template is empty it can be reloaded to allow these further jaws to'move into position to take further stockings.
Patent ES-355019-A1 (ES)
Title: Improvements in or relating to the production of nitrogenous material
IPC: C12N1/26
Filed: 1968-06-04
Abstract: In the recovery of a nitrogenous product from the cells of micro-organisms, the cells are extracted with a solvent which consists of or contains formic acid, the extraction being carried out under conditions such that a substantial proportion of the free protein content of the cells and of compounds present in the cells having carbohydrate-to-protein bonds pass into the extract phase and such that a substantial proportion of the free carbohydrate content of the cells remains in solid phase, thereafter the extract phase is separated from the solid phase, the extract phase, which contains compounds having carbohydrate-to-protein bonds, is maintained at such temperatures for such a period of time that the bonds are disrupted, and there is recovered from the treated extract phase a nitrogenous product. The micro-organism cells are typically obtained by the aerobic culture of specified normal paraffin-consuming yeasts, moulds or bacteria on a hydrocarbon substrate. Under preferred conditions of operation the micro-organism is in a dry state when subjected to the extraction, formic acid is employed in the anhydrous state or in aqueous dilution containing at least 30% of formic acid and the extraction is carried out at a temperature below 60 C. with a contact time of at least 2 hours. Disruption of the carbohydrate-to-protein bonds may be achieved by subjecting the extract to elevated temperature (60-100 C.) or maintaining the extract for a prolonged period (2-50 hours) at ambient temperature. According to the examples, dry Candida yeast was treated with 85% w./w. aqueous formic acid at 20 C. for 16 hours. The extract phase was maintained under stirring at 20 C. for 48 hours (or at 80 C. for 2 hours) and the formic acid was then removed by vacuum distillation. From the solid residue there was obtained an aqueous phase containing 18% by weight of the original nitrogen of the yeast and a solid phase from which there was obtained by further extraction and precipitation proteinaceous material (12.5% by wt. of nitrogen) constituting 52% by wt. of the original nitrogen of the yeast.
Patent ES-359690-A1 (ES)
Title: Hydraulic press
IPC: F15B15/10
Filed: 1968-10-29
Abstract: In an hydraulic forming press having an expansible fluid pressure bag 58 located in a cavity 34 in a cylindrical body 12, stress concentrations in the body are minimized by a plurality of fluid pressure cylinder and piston devices 100, 102 which impart a radial reaction to portions of the body between the bag 58 and a work-supporting tray 42. The cylindrical body 12 comprises an inner cylinder 30 and a laminated outer cylinder 32 formed of sections welded together as at 35. The press comprises also rigid roof and floor members 36, 38 and 40. The cylinders 100 and the bag 58 are supplied with fluid under pressure by a pump and motor unit (20).
Patent ES-372481-A1 (ES)
Title: Electric starter motors
IPC: F02N15/06
Filed: 1969-10-03
Abstract: The invention relates to a starter drive including a casing 11, a rotor shaft 12 journalled for rotation in the casing, a pinion assembly 14, 15 rotatable with the rotor shaft and movable axially relative thereto, a lever 26 coupled at one end to the pinion assembly and pivotably connected 27 intermediate its ends to the casing and means 22 operable to cause pivotal movement of the lever and thereby move the pinion assembly axially. According to the invention the lever is coupled to the pinion assembly through a plate 32 which is pivotally connected to the one end of the lever for pivotal movement about an axis extending generally at right angles to the axis of rotation of the pinion assembly, the pinion assembly being engaged with the plate for rotation relative thereto, the plate being capable of movement relative to the pinion assembly in a plane generally at right angles to the axis of rotation of the pinion assembly.
Patent ES-372992-A1 (ES)
Title: Low temperature wet cross-linking of regenerated cellulose
IPC: C08J9/40
Filed: 1969-10-29
Abstract: A regenerated cellulose product is chemically modified by treating the cellulose product in contact with an aqueous solution of 5 to 30% by volume formaldehyde or its equivalent such as symtrioxane or paraformaldehyde and from 15 to 25% by volume of HCl at a temperature ranging from immediately above the freezing point of the solution to 15 C., for to 60 minutes, and removing substantially all the hydrochloric acid from the treated product. The product so treated has improved wet resilience and crease resistance and may be in the form of fibres, films, fabrics or sponges. The wet, cross-linked acid free treated product may be fibrous and may be treated with a latent acid liberating catalyst such as an acid salt for accelerating curing of the treated product at a temperature above 110 C after treatment with a cellulose finish.
Patent ES-415408-A1 (ES)
Title: Spinning apparatus for glass-fiber yarn
IPC: D01H7/86
Filed: 1973-05-30
Abstract: A spinning apparatus has a flyer which is rotated about its axis by a belt drive at one axial end of a spindle carrying the flyer. Received within the flyer and rotatable relative thereto is a yarn-package holder comprising a plush-lined cup snugly receiving a coreless package of glass-fiber yarn, and a takeup tube whose mouth lies within the package. A thread brake is provided within the takeup tube and the yarn holder is prevented from rotating with the flyer. The yarn of one or more threads is drawn off the inside of the package into the mouth of the nonrotating takeup tube, thence enters the end of the rotating spindle, passes radially out through the flyer under the yarn-package holder, and thence axially out through the rotating sleeve of the flyer. The tube of the flyer is formed by a pair of nested tubes connected by a corrugated stiffening element.
Patent ES-415623-A1 (ES)
Title: Link hinge
IPC: E05D5/16
Filed: 1973-05-29
Abstract: A link hinge comprising a pair of hollow, preferably cylindrical shells hingedly interconnected at one end of each shell by link means normally housed inside said tubular shell. Each shell of the link hinge is inserted in an outher box, preferably made of plastic material, which in turn may be inserted and secured by glueing in borings made in the parts to be hinged together. Means are provided in the shells and the boxes for inserting each shell in its box in a prefixed alignment, and for securing said shell to said box.
Patent ES-416870-A1 (ES)
Title: Safety check valve for pressure fluid operated apparatus in particular presses
IPC: F16K15/02
Filed: 1973-07-13
Abstract: A safety check valve for pressure operated apparatus, in particular presses comprises two axially disposed control pistons movable axially independently of one another in a cylindrical housing having a fluid inlet at one end and an outlet at the other. One of the control pistons has a closed end engageable with a first valve seat surrounding the inlet opening of the housing, an axial bore surrounded by a second valve seat at the opposite end of the piston and at least one radial hole communicating with the axial bore. The other control piston has a closed end engageable with the second valve seat, an axial bore opening at the opposite end of the piston and at least one radial hole. The control pistons are spring biased toward their respective valve seats and are movable against the bias by fluid pressure. With this arrangement either control piston will check the return flow of fluid regardless of the position of the other.
Patent ES-420217-A1 (ES)
Title: Color decalcomania and method
IPC: B41M3/12
Filed: 1973-11-02
Abstract: A color decalcomania and method of forming the same are provided wherein the design layer is formed by separately depositing on a substrate at least three colors, namely, blue, red and yellow, and preferably a fourth color, namely black, each color comprising a mixture of pigment and glass frit. The frit will include at least 5 percent and preferably at least 10 percent of a cadmium substituent. The presence of the cadmium, usually in the form of CdO, in the frit mixed with each color makes all colors compatible with each other and prevents the formation of PbS during firing and protects the yellow color and red color. Furthermore, the frit, which preferably is stable and viscous allows the colors to fuse at approximately the same firing temperature allows colors to maintain their integrity, gives good color balance and provides compatibility in all color systems. The method for forming such color decalcomanias comprises forming the design layer of the decalcomania by separately mixing each color with a suitable frit, separately applying each color-frit mixture to a substrate, and drying before the next application of frit-color mix, and firing all colors at the same temperature.
Patent ES-424049-A1 (ES)
Title: Pulley drive for a side-loaded drum type washing machine
IPC: D06F37/30
Filed: 1974-03-07
Abstract: In a drum type washing machine, an improved pulley drive comprising a first annular pulley part fixed to a shaft on which the machine drum is mounted for coupling a drive arrangement thereto an annular rim, mounted on the first pulley part in concentric disposition with respect thereto, which includes a plurality of lug members extending radially outwardly from the periphery thereof and a second pulley part which includes a ring-shaped body portion having a radially inner edge adapted for slidable disposal over the annular rim. The second pulley part includes a plurality of radially outwardly extending lug members, including at least one which is greater in axial lengths than the others and a plurality of circumferentially spaced apart recesses disposed in the body portion along the inner edge which receive the lug members on the rim. Tension springs are coupled to the pulley parts for absorbing the rotational momentum of the drum during stopping and for aligning the housing and drum loading openings subsequent thereto.
Patent ES-424411-A1 (ES)
Title: Photoconductive copolymer of N-vinylcarbazole and N-vinylphthalimide
IPC: C08F26/06
Filed: 1974-03-18
Abstract: Polymeric compositions comprising the product of the addition polymerization of N-vinylcarbazole and at least one member selected from the group consisting of N-vinylphthalimide and the isostructural modifications thereof. Many of the above polymeric products are photoconductive and, thus, are suitable for use in electrophotography.
Patent ES-426574-A1 (ES)
Title: Preparation of arylalkanoic acids
IPC: C07C67/00
Filed: 1974-05-22
Abstract: A novel process for making aryl propionic acids is described. It comprises reaction of a Grignard compound, obtained from an aryl bromide and magnesium, with a lithium, sodium, magnesium or calcium salt of 2-bromopropionic acid, followed by acidification.
Patent ES-426855-A1 (ES)
Title: Mating contact connector housing assembly
IPC: H01R12/73
Filed: 1974-06-01
Abstract: A mating contact connector housing assembly having a plurality of contacts housed therein, the contacts including contact blade portions and terminal portions and being mounted within the housing in a cantilever manner such that they are restrained from moving within longitudinally extending planes yet are permitted to undergo flexural movement within laterally extending planes, whereby the contact members accomodate and compensate for contact misalignment with mating contact members. The housing is also provided with additional aligning pins to properly align the housing relative to a mating housing and is further provided with a dependent skirt which serves to additionally promote the alignment between the mating housing as well as protect the contact members against structural damage.