| Patent Number |
Title Of Patent |
Date Issued |
| 4388278 |
Purification by hydrogenation of hydrogen chloride containing acetylene obtained by the thermal |
June 14, 1983 |
| The invention is a process for the purification of hydrogen chloride formed during the thermal cracking of 1,2-dichloroethane, by hydrogenating the acetylene impurities with excess hydrogen, at pressures of from 8 to 20 bar absolute and at temperatures of from 120.degree. to 180.degree. |
| 4382838 |
Novel silicon crystals and process for their preparation |
May 10, 1983 |
| A plate-like silicon crystal having a columnar structure formed along the direction of the shortest axis, produced by cooling molten silicon, which may contain a doping agent, in a temperature gradient between the two largest boundary surfaces of the melt, one of which has a maximum |
| 4377672 |
Process for the polymerization of vinyl chloride according to the microsuspension process |
March 22, 1983 |
| The subject of the invention is a microsuspension polymerization in water of vinyl chloride, which is carried out in the presence of monomer-soluble radical-initiators and emulsifiers. According to the invention, from about 0.01 to 0.5% by weight, based on the weight of the water, of pol |
| 4377433 |
Laminating and coating adhesive, its manufacture and use |
March 22, 1983 |
| A laminating and coating adhesive based on an aqueous dispersion of(1) a copolymer of a vinyl ester, and/or an acrylic acid ester, and/or a further monomer and an ethylenically-unsaturated functional group-containing monomer having from 3 to 18 carbon atoms and hydroxy and carbonyl group |
| 4368306 |
Process and catalyst for the polymerization of .alpha.-olefins |
January 11, 1983 |
| Poly-.alpha.-olefins, particularly polyethylene, having a broad molecular weight distribution, can be prepared discontinuously or continuously in the gaseous phase or in hydrocarbons as dispersants, at a pressure of from 2 to 40 bar and at a temperature of from 60.degree. C. to 100.degre |
| 4368294 |
Process for preparing organopolysiloxane modified organic polymers |
January 11, 1983 |
| Organopolysiloxane modified organic polymers are prepared by reacting organic polymers containing C-bonded hydroxyl groups with organopolysiloxanes containing Si-bonded hydroxyl groups and/or alkyl groups which are bonded to silicon via oxygen in the presence of water in excess of an |
| 4367331 |
Method of degassing of aqueous PVC dispersions |
January 4, 1983 |
| In the process for reducing the residual vinyl chloride monomer in an aqueous polyvinylchloride dispersion comprising the steps of depressurizing an aqueous polyvinylchloride dispersion containing emulsifiers and/or protective colloids as obtained from pressure polymerization in a po |
| 4366298 |
Process and heavy metal catalyst for the polymerization of .alpha.-olefins, particularly polyeth |
December 28, 1982 |
| Poly-.alpha.-olefins, particularly polyethylene, having a broad molecular-weight distribution, can be prepared in the presence of a catalyst solid which is manufactured in two reaction steps, from a primary solid containing magnesium and chlorine which has been reacted, in a reaction |
| 4365040 |
Aqueous plastic dispersions of unsaturated diacetylacetic ester |
December 21, 1982 |
| Strongly adhering aqueous plastic dispersions based on copolymers of olefinically unsaturated compounds, which are particularly suitable as binding agents for paints and lacquers and as adhesives, and which are distinguished by their good wet adhesion are described. This is achieved |
| 4363902 |
Process and heavy metal catalyst for the polymerization of .alpha.-olefins, particularly polyeth |
December 14, 1982 |
| Poly-.alpha.-olefins, particularly polyethylene, having a broad molecular-weight distribution, can be prepared in the presence of a catalyst solid which is manufactured in two reaction steps, from a primary solid containing magnesium and chlorine which has been reacted, in a reaction |
| 4361449 |
Process for the preparation of pre-melted, basic welding powders for submerged arc welding |
November 30, 1982 |
| A process for the preparation of pre-melted, basic welding powder for the submerged arc welding process which consists of preparing two components, one component containing substantially oxidic compounds and maximally 5% by weight of fluoridic compounds, and the other component containin |
| 4360654 |
Reaction products of silicic acid esters and organic tin compounds |
November 23, 1982 |
| Hydroxyl terminated diorganopolysiloxanes may be crosslinked with a mixture containing (1) a product obtained from the reaction of (a) silicic acid esters with (b) an organic tin compound of the formulawhere R represents a butyl or an octyl radical and R.sup.1 represents a monovalent hyd |
| 4359496 |
Heat-insulating board and method for producing same |
November 16, 1982 |
| The invention relates to a heat-insulating board which has a core and a cover. The core is composed of compacted, finely particulate metal oxide and, optionally, additions of opacifier and fibrous material. The cover is composed in part of metal foil arranged on those faces that are to b |
| 4359337 |
Process for the manufacture of basic slags for the electroslag remelting process |
November 16, 1982 |
| The invention relates to a process for the manufacture of basic slags for the electroslag remelting process, with the oxidic components corresponding to the desired composition, which may have a fluoridic content of not more than 5% by weight, and the fluoridic components correspondi |
| 4358391 |
Compositions containing liquid crystal phases |
November 9, 1982 |
| Compositions having liquid crystal phases which contain at least one component consisting of an organopolysiloxane having mesogenic molecules chemically bonded thereto as side chains which are obtained by grafting vinyl-substituted mesogenic molecules to an organohydrogenpolysiloxane. |
| 4357252 |
Siloxane break fluid compositions containing R'SiO.sub.2/3' units |
November 2, 1982 |
| Brake fluids containing at least 80 percent by weight based on the weight of the brake fluids of an organopolysiloxane containing triorganosiloxy endblocking units, diorganosiloxane units and from 0.5 to 20 mole percent of units of the formulawhere R' represents the same or different mon |
| 4356293 |
Organosiloxane block copolymers |
October 26, 1982 |
| A process for preparing organosiloxane block copolymers which comprises reacting (a) an organopolysiloxane containing Si-bonded hydroxyl groups and having an average molecular weight of at least 800 g/mole, in which at least 80 mole percent of the units are siloxane units, and one valenc |
| 4348496 |
Carboxylated monomer/vinyl chloride/vinyl acetate terpolymer emulsions, process of production an |
September 7, 1982 |
| A pastable emulsion polymer comprised of carboxylated monomer/vinyl chloride/vinyl acetate terpolymer having improved strength of adhesion produced by emulsion copolymerization and containing, per polymer weight,from 60% to 98% by weight of vinyl chloride monomer units,from 1% to 29% by weig |
| 4348243 |
Thermal insulation, a process for preparing said insulation and a pipe insulated therewith |
September 7, 1982 |
| Thermal insulation which contains a plurality of contiguous hollow structures such as hollow spheres and an elastomer, preferably a silicone rubber, which fills the interstices between the contiguous structures. The insulation may be molded around a pipe by filling the space between the |
| 4345056 |
Process for suspension polymerization of vinyl chloride employing mixed protective colloids |
August 17, 1982 |
| An improvement in the process of producing polyvinyl chloride by the suspension process in the presence of protective colloids by utilizing a protective colloid mixture of from 20% to 80% of the protective colloid mixture of a polyvinyl acetate having a hydrolysis degree of 40 to 55 mol |
| 4338217 |
Antifoams |
July 6, 1982 |
| Antifoams containing an organopolysiloxane and a solid dispersed in said organopolysiloxane, in which at least a portion of the organopolysiloxane is an organopolysiloxane which has a viscosity of from 5 to 40 mm.sup.2.s.sup.-1 at 25.degree. C. and contains on the average at least 0. |
| 4337323 |
Stabilized aqueous dispersions of vinyl chloride polymers |
June 29, 1982 |
| Stabilized aqueous dispersions of vinyl chloride polymer having at least 25% by weight of vinyl chloride units in the polymer and having K values of between 20 and 80, having added as a stabilizing agent 0.3-6% by weight of substances selected from the group of compounds according to the |
| 4336172 |
Aqueous dispersions of cross-linkable copolymers based on (meth)acrylates, their preparation and |
June 22, 1982 |
| Aqueous dispersions containing from 30% to 70% by weight of cross-linkable copolymers based on esters of (meth)acrylic acid comprising esters of (meth)acrylic acid and/or styrene, and other ethylenically-unsaturated compounds copolymerizable therewith and from 1% to 15% by weight based o |
| 4328325 |
Process for the preparation of polymers containing urethane groups |
May 4, 1982 |
| The invention relates to a process for the preparation of polymers from polymerizable urethanes prepared by reacting isocyanates having at least two isocyanato groups with polyesters of the formula ##STR1## wherein R is alkylene having from 2 to 10 carbon atoms, A is an ethylenic |
| 4326852 |
Method for increasing the bulk weight of silicon dioxide |
April 27, 1982 |
| A method for increasing the bulk weight of silicon dioxide with a surface of at least 50m.sup.2 /g by means of sub-atmospheric pressure applied at a filter face, wherein the silicon dioxide is moved by means of a conveyor screw, whose longitudinal axis is arranged parallel with respect t |
| 4322517 |
Hydrophilic, crosslinked, modified organopolysiloxanes and process for preparing the same |
March 30, 1982 |
| Hydrophilic, crosslinked organopolysiloxanes are obtained from the polymerization of hydroxyalkylmethacrylate and/or hydroxalkylacrylate in the presence of an organopolysiloxane containing at least 40 mol percent of monoorganosiloxane units.These hydrophilic, crosslinked, modified organo |
| 4322516 |
Copolymers for pressure-sensitive adhesives based on acrylic esters, (meth)acrylamide vinyl acet |
March 30, 1982 |
| A copolymer having good properties for use as a pressure-sensitive adhesive from an aqueous dispersion comprising:(a) from 10% to 30% by weight of ethylene units,(b) from 29% to 69% by weight of acrylic ester units,(c) from 20% to 55% by weight of vinyl acetate units,(d) from 0.2% to 8% by weigh |
| 4322330 |
Adhesive for floor coverings, process of its production and its application |
March 30, 1982 |
| An adhesive for floor coverings containing(a) 100 parts by weight of an aqueous polymer dispersion having a solids content of from 30% to 70% by weight of the total weight of said dispersion, the solids content consisting of synthetic resin particles of at least a bimodal particle size d |
| 4317762 |
Room temperature vulcanizable organopolysiloxane compositions |
March 2, 1982 |
| This invention relates to compositions which may be stored under anhydrous conditions, but when exposed to atmospheric moisture, crosslink at room temperature to form elastomers. These compositions contain diorganopolysiloxanes having terminal condensable groups, a silicon compound h |
| 4311563 |
Process for the isolation of monochloroacetaldehyde |
January 19, 1982 |
| The invention relates to a process for the isolation of chloroacetaldehyde which is obtained as a by-product during the synthesis of acetaldehyde from ethylene and air in an aqueous palladium/cupric chloride solution by the 2-stage process. The mixture to be worked-up to chloroacetaldehy |
| 4309478 |
Organic fibers having improved slip properties produced by treatment with organosilicon compound |
January 5, 1982 |
| This invention relates to polymeric organosilicon compounds containing aryl radicals and to a method for improving the gliding or slipping properties of organic fibers treated therewith. The polymeric organosilicon compounds are represented by the formulain which R is hydrocarbon or subs |
| 4306092 |
Process for separating acetaldehyde from mixtures with chloroform, methylene chloride and chloro |
December 15, 1981 |
| The invention provides a process by which acetaldehyde can be separated off from mixtures with chloroform, methylene chloride and chlorofuran. In this process, the aldehyde is separated off by adding water to separate the mixture into an aldehyde-containing phase and a phase comprising |
| 4304820 |
Polymer impregnated wood and process for preparing the same |
December 8, 1981 |
| Impregnated wood containing a polymer which is produced in the wood from the polymerization of a monomer and/or prepolymer having aliphatic multiple bonds and crosslinked organopolysiloxanes.The polymer impregnated wood is prepared by impregnating the wood with a mixture containing a mon |
| 4301215 |
Process for the preparation of impregnated wood |
November 17, 1981 |
| A process for preparing plastic wood which comprises impregnating wood with a mixture containing (1) an organopolysiloxane having groups which are capable of condensation and/or containing SiC-bonded alkenyl group having an average molecular weight of at least 500 when the organopolysilo |
| 4301056 |
Organopolysiloxane elastomers |
November 17, 1981 |
| Elastomers which are obtained by crosslinking an organopolysiloxane composition containing a diorganopolysiloxane, an organic peroxide and calcium hydroxide which has been treated with an organosilicon compound to impart hydrophobic properties thereto. |
| 4298753 |
Continuous process for preparing silanes and siloxanes having SiOC groups |
November 3, 1981 |
| A continuous process for preparing silanes and siloxanes having SiOC groups which comprises (a) introducing in a liquid phase a chlorosilane and a hydroxyl-containing aliphatic compound in parallel flow into a first stage of a first reactor in an amount such that from 0.5 to 0.9 gram-mol |
| 4298576 |
Polymerization autoclave |
November 3, 1981 |
| A polymerization autoclave for the suspension polymerization of vinyl compounds in the aqueous phase having a volume of from 50 to 200 m.sup.3, an impeller agitator driven from below at the bottom of the autoclave and two cylindrical displacement bodies acting as flow interrupters, secur |
| 4296228 |
Room temperature curable compositions |
October 20, 1981 |
| Room temperature curable compositions, which can be stored under anhydrous conditions, but when exposed to atmospheric moisture at room temperature cure to an elastomer comprising a diorganopolysiloxane having terminal condensable groups, a silicon compound containing acetoxy, tert-butox |
| 4296017 |
Graft copolymer pressure-sensitive adhesives, their manufacture and use |
October 20, 1981 |
| Pressure-sensitive adhesives which contain preferably from 60% to 85% by weight of graft copolymers for use as polymeric pressure-sensitive adhesives, and from 15% to 40% by weight of plasticizers such as phthalate or phosphate plasticizers. The graft copolymer consists of from 5% to 30% |
| 4292434 |
Process for the addition of Si-bonded hydrogen to an aliphatic multiple bond |
September 29, 1981 |
| A process for the addition of Si-bonded hydrogen to an aliphatic multiple bond in the presence of a platinum catalyst which is obtained by dissolving a platinum halide in at least 20 parts by weight of olefin for each part by weight of the platinum halide, and subsequently heating and |
| 4292423 |
Process for the preparation of organopolysiloxanes |
September 29, 1981 |
| Organopolysiloxanes having substituted carbamoyloxy groups (.tbd.SiOCO--NH--) bonded to silicon via oxygen, which are prepared by reacting an organopolysiloxane containing Si-bonded hydroxyl groups with an organic isocyanate in the presence of an organic tin compound.The stability of the |
| 4292362 |
Organopolysiloxane compositions and a process for treating organic fibers |
September 29, 1981 |
| An organopolysiloxane composition comprising(A) at least one diorganopolysiloxane containing Si-bonded terminal hydroxyl groups,(B) at least one organosilane of the general formula RSiR'.sub.n X.sub.3-n, in which R represents a monovalent group containing carbon, hydrogen, aminonitrogen |
| 4278727 |
Alkai-soluble, water-resistant binders for non-woven materials |
July 14, 1981 |
| A non-woven material containing from 2% to 25% by dry weight of an alkali-soluble, water-resistant in neutral to weakly acidic solutions, binder for non-woven materials based on an aqueous vinyl acetate copolymer containing protective colloids and optionally emulsifiers and having the |
| 4276426 |
Process for the preparation of organosilicon compounds |
June 30, 1981 |
| This invention relates to the preparation of organosilicon compounds by the addition of a silicon compound containing Si-bonded hydrogen to a compound having an aliphatic multiple bond in the presence of a catalyst which promotes the addition of Si-bonded hydrogen to compounds containing |
| 4276425 |
Process for preparing cyclic dimethylpolysiloxanes |
June 30, 1981 |
| Cyclic dimethylpolysiloxanes are prepared by heating a mixture containing linear or branched organopolysiloxanes consisting of at least 50 mol percent dimethylsiloxane units and aqueous sulfuric acid in which the aqueous sulfuric acid contains from 50 to 85 percent by weight of sulfuric |
| 4276423 |
Process for preparing silicon-containing acetamide derivatives |
June 30, 1981 |
| A process for preparing silicon-containing acetamide derivatives which comprises reacting acetamide or substituted derivatives thereof with N-trimethylsilyl imidazole while continuously removing the silicon-containing acetamide derivatives as they are formed by distillation. |
| 4276252 |
Addition of Si-bonded hydrogen to an aliphatic multiple bond |
June 30, 1981 |
| Silicon containing compounds having Si-bonded hydrogen are added to an aliphatic multiple bond in the presence of a platinum catalyst selected from the group consisting of platinum compounds of the formulawhere R.sup.1 represents a cyclic hydrocarbon radical or a substituted cyclic hydro |
| 4263191 |
Additive composition used in the preparation of low air pore, plastic containing, hydraulically- |
April 21, 1981 |
| An additive composition used in the preparation of low air pore, plastic-containing, hydraulically-setting binders consisting essentially of a mixture of (1) an aqueous copolymer dispersion having a solids content of between 30% and 65% by weight, a glass transition temperature of th |
| 4261389 |
Gas injecting valve for suspensions |
April 14, 1981 |
| A valve arrangement for injecting a gas into a polyvinyl chloride fluid suspension, through an inlet port in the bottom of the suspension tank. The valve includes an overhanging upper disk with a hollow foraminated cylinder, so that the gas exits the cylinder under pressure through the |
| 4260726 |
Thermosetting organopolysiloxane compositions |
April 7, 1981 |
| Organopolysiloxane compositions which are stable at room temperature, but are curable when subjected to elevated temperatures comprising (1) an organosilicon compound containing Si-bonded hydrogen, (2) an organosilicon compound containing aliphatic multiple bonds, (3) a catalyst capable |
