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| Number | Title | Issue Date |
| 4113732 | Manufacture of benzothiazoles Process for the production of benzothiazoles from N-arylsubstituted thioureas by oxidative ring closure characterized by the use of chlorine as oxidizing agent and by the presence of catalytic amounts of bromine. Yield and quality of the benzothiazoles ob... | 09/12/1978 |
| 4093668 | Manufacture of butynediol Butynediol is prepared by reacting acetylene and formaldehyde in contact with a heavy metal acetylide as catalyst, in the liquid phase by the Reppe method. Acetylene is fed upwardly through a suspension of the catalyst in formaldehyde at such a rate that ... | 06/06/1978 |
| 4080349 | Glass-fiber-reinforced thermoplastic molding compositions showing improved flowability and toughness Glass-fiber-reinforced thermoplastic molding compositions showing improved flowability and toughness and containing from 0.1 to 2% by weight, based on the total mixture, of a low molecular weight polyolefin wax to which from 2 to 50% by weight of polar si... | 03/21/1978 |
| 4048199 | Production of aminonitrodihydroxyanthraquinones by partial reduction dinitrodihydroxyanthraquinones The production of aminonitrodihydroxyanthraquinones of the formula: ##STR1## in which one X is OH and the other X is NO2 by partial reduction of the corresponding dinitrodihydroxyanthraquinone or mixtures thereof by heating at 80°-250° C... | 09/13/1977 |
| 4043571 | Suspension system A suspension system for connecting an axle support for a wheel of a vehicle to the chassis of the vehicle is provided which comprises a hollow cross frame containing a bar maintained in said frame by four compressively distorted rubber blocks within the h... | 08/23/1977 |
| 4038311 | Production of N-(1-alkenyl)-carbamyl chlorides The production of N-(1-alkenyl)-carbamyl chlorides by reaction of a Schiff base with phosgene, and the new N-(1-alkenyl)-carbamyl chlorides themselves. The new compounds which can be prepared by the process of the invention are valuable starting materials... | 07/26/1977 |
| 4031166 | Impact-resistant polystyrene, -olefin, block copolymer blends Impact-resistant thermoplastic molding materials prepared from a rigid component and a soft component. The rigid component consists of polystyrene, the soft component consists of a mixture of a polyolefin with a copolymer of a vinylaromatic and a diene hy... | 06/21/1977 |
| 4031135 | Manufacture of acrylic acid by oxidation of propylene with oxygen-containing gases in two separate catalyst stages In the oxidation of propylene to acrylic acid in the gas phase in two spatially separate oxidation stages, a part of the off-gas, which has been freed from condensable products, is fed to the oxidation stages in addition to freshly charged propylene and a... | 06/21/1977 |
| 4031139 | Manufacture of cyclohexanone oxime An improved process for the manufacture of cyclohexanone oxime by reacting cyclohexanone with an aqueous hydroxylammonium-ammonium sulfate solution at temperatures above the melting point of cyclohexanone oxime by the countercurrent process, the improveme... | 06/21/1977 |
| 4031179 | Manufacture of shaped articles of foamed olefin polymers Shaped articles are produced by heating and compressing particles of foamed olefin polymer containing crosslinked portions in molds, the pressure being reduced during compression in the mold.... | 06/21/1977 |
| 4025260 | Food extrusion device A device for the production of a food article, in which food material is extruded through a generally arcuate die opening so that a differential in the frictional forces between the center portion and the end portions of the arcuate opening causes the mat... | 05/24/1977 |
| 4024307 | Polyurethane solutions A process for the production of polyurethane solutions by reaction of a diisocyanate with a mixture of a glycol and a polymer bearing terminal hydroxy groups in a solvent medium under certain prescribed conditions. The resulting polyurethane solutions are... | 05/17/1977 |
| 4023748 | Cassette loading and tape tensioning system A system for automatically loading and tensioning a supply reel of magnetic recording which is contained in a tape cassette. The system is designed to be utilized with a tape transport mechanism of the type wherein the supply reel is driven by surface eng... | 05/17/1977 |
| 4023743 | Textile machine, especially spinning machine An automatic spool changing system for textile machines with an array of high-speed winding heads, for example of the type having a spool revolver and a lossless thread transfer device. The system has a conveyor serving for the transportation both of full... | 05/17/1977 |
| 4022804 | Process for the production of bromo substituted tetrahydrofuran sulfones A process for the manufacture of ଲ-bromoalkylsulfones and ଲ-bromoalkenylsulfones by addition reaction of sulfonic acid bromides with olefins or acetylenes in the presence of hydroperoxide and, optionally, of metal salts. Starting materials for... | 05/10/1977 |
| 4022400 | Tape threading apparatus An apparatus for automatically threading a supply reel of magnetic recording tape equipped with a self starting leader into a tape transport mechanism of the type in which take-up and supply reels are simultaneously driven by surface engagement of a capst... | 05/10/1977 |
| 4022815 | Manufacture of substituted glycinonitriles N-Alkylglycinonitriles are manufactured by reaction of N-alkylamines with formaldehyde and hydrocyanic acid under specific conditions of temperature, reaction time and hydrocyanic acid concentration.... | 05/10/1977 |
| 4021411 | Production of high molecular weight ,ଲ-unsaturated aldehydes A process for the production of high molecular weight ,ଲ-unsaturated aldehydes by alkylation of the γ-carbon atom of a lower molecular weight ,ଲ-unsaturated aldehyde with a substituted allyl alcohol which has a chain branching i... | 05/03/1977 |
| 4021408 | Bis-[4-(m,m'-di-tert.-butyl-p-hydroxyphenyl)-butyl-(2)]dicarboxylic acid esters New bis-[4-(m,m'-di-tert.-butyl-p-hydroxyphenyl)-butyl-(2)] dicarboxylic acid esters which are starting materials for the manufacture of dyes, pesticides and additives for plastics, especially stabilizers for polyolefins and polyamides, and are themselves... | 05/03/1977 |
| 4021226 | Herbicides New and valuable herbicide based on 1-phenyl-4-amino-5-chloro (or -5-bromo)-pyridazone-(6) in the form of an aqueous suspension.... | 05/03/1977 |
| 4021223 | Herbicide New and valuable herbicide comprising mixtures of benzofuranylalkylamino sulfonates, and methyl -chloro-ଲ-(4-chlorophenyl)-propionate.... | 05/03/1977 |
| 4021222 | Thiol carbamates The new compound S-(2,3-dichloroallyl)-(2,2,4-trimethylazetidine)-1-carbothiolate, herbicides containing this compound as active ingredient, a process for controlling the growth of unwanted plants with this compound, and a process for its manufacture... | 05/03/1977 |
| 4021497 | Production of 2-ethylhexanol-(1) by hydrogenation of 2-ethylhexen-(2)-al-(1) An improved process for the production of 2-ethylhexanol-(1) which comprises contacting 2-ethylhexen-(2)-al-(1) in an inert solvent with hydrogen at pressures of 1 to 500 atmospheres gauge and at temperatures of 80° to 200° C in the presence of a hydrog... | 05/03/1977 |
| 4021521 | Manufacture of work-hardened wires and profiles A process for the manufacture of wires and profiles, wherein thermoplastics are first mixed, in the melt, with from 5 to 40 per cent by weight (based on the mixture) of aluminum needles of length from 0.3 to 6 mm, of average diameter from 0.02 to 0.1 mm a... | 05/03/1977 |
| 4021491 | Manufacture of 2,6,6-trimethyl-cyclohex-2-en-1-one A process for the manufacture of 2,6,6-trimethyl-cyclo-hex-2-en-1-one by reacting 3-alkoxy-4-methyl-3-pentene or 3-alkoxy-4-methyl-2-pentene or a mixture of these compounds with acrolein, and reacting the resulting 2-alkoxy-2-ethyl-3,3-dimethyl-2,3-dihydr... | 05/03/1977 |
| 4021463 | Regeneration and separation of rhodium-containing or iridium-containing catalysts from distillation residues following hydroformylation Regeneration and separation of catalysts Me(CO)(PR3)2 Hal(I) and HMe(CO)(PR3)3 (II), where Me is rhodium or iridium, Hal is halogen and R denotes the same or different hydrocarbon radicals, from distillation res... | 05/03/1977 |
| 4021442 | Production of 1-alkyl-5-nitroimidazoles 1-Alkyl-5-nitroimidazoles are prepared by reacting a 5-nitroimidazole with an alkylating agent in the presence of an aliphatic carboxylic acid. The products are intermediates for the production of dyes, textiles auxiliaries and insecticides.... | 05/03/1977 |
| 4021413 | Production of wood glue Condensates containing urea and formaldehyde in a molar ratio of from 1:2.5 to 1:4.5 are converted into wood glue by allowing the viscosity to increase at a pH of from 1 to 3 and at only slightly elevated temperature and then adding urea at a pH of 7 to 9... | 05/03/1977 |
| 4019852 | Quiet and smokeless flaring of off-gases containing hydrocarbons A process for the quiet and smokeless flaring of process gases by sharp separation of the air intake and combustion steps. Compared with conventional off-gas flares, steam consumption is reduced and blow-back of the flame into the mixing tube is avoided b... | 04/26/1977 |
| 4019719 | Fluid mixing device An apparatus for thoroughly mixing components of fluid material and, more particularly, for combining and homogenizing streams of gaseous, liquid and/or granular material by passage through a tube-like conduit which contains a plurality of consecutive mix... | 04/26/1977 |
| 4019511 | Portable conditioned air breathing device A portable conditioned heated air breathing device is provided comprising a compartmented canister with a collapsible hose storage compartment, an air conditioning compartment and a heating compartment and which also contains an ejector for ejecting an ad... | 04/26/1977 |
| 4019311 | Process for the production of a multifilament texturized yarn A process for the production of a multifilament textured yarn by melt-spinning different polymers (for example a polyamide and a polyester) or copolymers (for example copolymers of nylon-6 and nylon-6,6) to form a highly preoriented multifilament yarn at ... | 04/26/1977 |
| 4020102 | Production of 2-hydroxynaphthalene-3-carboxylic acid 2-Hydroxynaphthalene-3-carboxylic acid is prepared by the reaction of sodium-ଲ-naphtholate with carbon dioxide, extraction of the reaction mixture in the presence of water with benzene or a benzene derivative in a specific ratio and separation of th... | 04/26/1977 |
| 4020025 | Extrudable foamable composition comprising an olefin polymer, a styrene polymer and a hydrogenated styrene butadiene block copolymer Foams of mixtures of polyolefins and styrene polymers are produced by mixing the polymers with low-boiling expanding agents in the presence of a hydrogenated styrene/butadiene block polymer or a graft polymer of styrene on a polyolefin at temperatures abo... | 04/26/1977 |
| 4018967 | Magnetic recording tape Magnetic recording tape especially suitable for use as video tape and computer tape, comprising a base carrying a magnetic coating which consists essentially of a dispersion of a finely divided magnetic pigment and at least one lubricant in an organic bin... | 04/19/1977 |
| 4018882 | Manufacture of gamma-iron (III) oxide A process for the manufacture of acicular magnetic gamma-iron(III) oxide by reducing acicular alpha-iron(III) oxide to magnetite and then oxidizing it to gamma-iron(III) oxide, wherein the alpha-iron(III) oxide is treated with a water-soluble alkaline ear... | 04/19/1977 |
| 4018618 | Mono- and/or di-alkyl phosphates as additives for hydraulic binders Mono- or di-alkyl phosphate or their alkali metal salts or optionally substituted ammonium salts for use as antifoaming and hydrophobizing additives for hydraulic binders.... | 04/19/1977 |
| 4018402 | Tape transport apparatus An improved tape transport apparatus of the type in which the supply and take-up reels are simultaneously driven by surface engagement of a capstan with the outermost layer of tape on each reel. The uniform tape tension required in a system of this type i... | 04/19/1977 |
| 4018968 | Coated magnetic recording media Coated magnetic recording media, especially video tapes and computer tapes, comprising a non-magnetic base carrying a magnetic coating which consists of a dispersion, essentially containing a finely divided magnetic pigment in an organic binder and at lea... | 04/19/1977 |
| 4017593 | Manufacture of sodium dithionite For the preparation of anhydrous sodium dithionite by the reaction of sulfur dioxide with sodium formate and caustic soda in the presence of organic solvents, sulfur dioxide is passed, together with the formate, into a liquid containing all of the caustic... | 04/12/1977 |
