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| Number | Title | Issue Date |
| 5019299 | Process for the manufacture of wax-like esterification products Wax-like esterification products derived from optionally partially saponified hard paraffin oxidation products and mono- or multivalent alcohols, which are suitable particularly as lubricants for plastics processing, are formed in the melt with particular... | 05/28/1991 |
| 4822869 | Process for introducing gases into liquids in the production of polyphenylene ethers or sulfoxidized parrafins using horizontal reactors A method for introducing gases into liquids, wherein a stirred kettle is used which has the form of a cylindrical vessel in which the length/diameter ratio should be at least 1; and wherein the stirred kettle is filled to a level of more than 70% with the... | 04/18/1989 |
| 4786488 | Process for the purification of hydrochloric acids A process for the purification of hydrochloric acids contaminated with C1 -chlorinated hydrocarbons involves the controlled use of a distillator column. The contaminants are removed by stripping with HCl gas, the stripping being performed in a ... | 11/22/1988 |
| 4749771 | Process for introducing gases into liquids The invention relates to a process for introducing gases into liquids, a stirred kettle being used which has the form of a cylindrical vessel in which the length/diameter ratio should be at least 1. The stirred kettle is filled to a level of more than 70%... | 06/07/1988 |
| 4690970 | Thermoplastic compositions based on polyphenylene ethers, impact-resistant styrene polymers, and pulverulent, filler-containing rubber; and method for manufacturing such compositions The invention relates to thermoplastic molding compositions comprised of polyphenylene ethers, impact-resistant styrene polymers, and a pulverulent, filler-containing rubber; and further comprised of various additives. The present invention also relates t... | 09/01/1987 |
| 4659803 | Process for purifying polyphenylene oxides obtained by interruption of the copper-amine catalyzed polycondensation of ortho-disubstituted phenols The invention relates to a process for purifying polyphenylene oxides obtained by interruption of the copper-amine catalyzed polycondensation of di-ortho-substituted phenols, where in said process the reaction mixture is subjected to a "reaction-extractio... | 04/21/1987 |
| 4656220 | Thermoplastic compositions based on polyphenylene ethers and polyoctenylenes, and method of manufacturing same The invention relates to thermoplastic compositions comprising mixtures of (A) 100 parts by wt. polyphenylene ethers; (B) 2-40 parts by wt. polyoctenylene; and (C) the following additives in amounts given as wt. % of the overall molding or forming composition: up t... | 04/07/1987 |
| 4652343 | Process for the separation of mixtures of paraffin or respectively paraffins of 6-14 carbon atoms and alcohol or respectively alcohols of 4-8 The separation of homozeotropic mixtures of a paraffin or paraffins of 6-14 carbon atoms and an alcohol or alcohols of 4-8 carbon atoms is conducted in two rectification steps. In a first step, rectification is carried out in the presence of water as the ... | 03/24/1987 |
| 4649067 | One-component baking enamels One-component baking enamels of polyesters, containing hydroxyl groups, and polyisocyanates, wherein the polyisocyanate component consists of 2-methyl-1,5-diisocyanatopentane (MPDI) having the formula (I): ##STR1## which is blocked totally or partial... | 03/10/1987 |
| 4647613 | Thermoplastic compositions based on polyphenylene ethers, styrene polymers, and polyoctenylenes, and methods of manufacturing same Thermoplastic compositions comprised of the following components: (A) Polyphenylene ether, in the amount of 20-90 parts by weight; (B) Styrene resins, in the amount of 5-70 parts by weight; (C) Polyoctenylenes, in the amount of 2-20 parts by weight; (D) Copolymers based... | 03/03/1987 |
| 4622306 | Process for protecting steam generators from material damage Decomposable organic compounds can, at times, be contained in the feedwater for steam generators; these decomposable compounds can stem from the untreated water supply or from the recondensate if the steam is utilized as heating steam for chemical plants ... | 11/11/1986 |
| 4619951 | Sealing compositions for electric cables The present invention relates to a method of manufacturing sealing compositions for electric wires, wherein one mixes together a filler (comprised chiefly of an alkaline earth carbonate), a binder component, and possibly additives of the type common in th... | 10/28/1986 |
| 4618468 | Method for controlling bead size in the production of expandable styrene polymers by suspension polymerization A process for controlling bead size in the production of expandable styrene polymers by suspension polymerization is carried out by adding protective colloids to the aqueous phase before polymerization begins, such protective colloids being used which are... | 10/21/1986 |
| 4615727 | Cycloalkyl amino-s-triazines and their use as selective agents against weeds and noxious grasses A herbicidal compound, and a method of use therefor, for the selective treatment of useful plant cultures, having a broad spectrum of activity against weeds and noxious grasses in pre-emergence and/or post-emergence periods having the formula: ##STR1... | 10/07/1986 |
| 4598157 | Method for the manufacture of pyromellitic acid dianhydride A method of separating pyromellitic acid dianhydride from the reaction gas obtained from the gas phase oxidation of 1,2,4,5-tetraalkylbenzene with an oxygen bearing gas in a closed gas circulatory system, comprising, (a) desublimating pyromellitic acid di... | 07/01/1986 |
| 4596019 | Method and apparatus for the generation of hot gases with an electric arc In a direct-current-operated, gas-vortex stabilized high-voltage arc furnace with hollow electrodes and a vortex chamber, the gas to be heated is blown in tangentially to the common axis of the electrodes. In the hollow electrodes, the ratio of the intern... | 06/17/1986 |
| 4588785 | Application of block copolyester amides as thermoplastic adhesives for textiles Block copolyester amides having improved properties are applied as thermoplastic adhesives to textiles. Their melting points are between 80° and 135° C. and the block copolyester amides are prepared by polycondensing: (A) 60 to 95% by weight of a block ... | 05/13/1986 |
| 4578367 | Methods for reprocessing cobalt catalysts used in hydrocarboxylation The catalytic cobalt compound used in the reaction of olefins with carbon monoxide and water or alkanols which employs an oxidizing treatment is reprocessed according to the present invention. This reprocessing includes in a first embodiment treating the ... | 03/25/1986 |
| 4571284 | Dehydrating 2,6-dimethylmorpholine A separation of mixtures of water and 2,6-dimethylmorpholine is carried out by rectifying the mixtures at a pressure at the head of the column between 6 and 150 mbars. The separated 2,6-dimethylmorpholine has a maximum water content of 500 ppm by weight a... | 02/18/1986 |
| 4567220 | Production of copper(II) hydroxide phosphate with a light natural color and an average grain size less than 10 microns A process for producing a copper(II) hydroxide phosphate having the Cu3 (PO4)2.Cu(OH)2 composition and having a light natural color and an average grain size less than 10 microns. Basic copper carbonate of a bul... | 01/28/1986 |
| 4566931 | Heat sealing textiles with copolyamides Copolyamides based on dicarboxylic acids, diamines and omega amino carboxylic acids or lactams are used as thermoplastic adhesives to heat-seal especially siliconized textiles. The copolymers used consist of 20 to 80% by weight of one or more aliphatic om... | 01/28/1986 |
| 4562264 | Process for the recovery of five-membered ring dicarboxylic acid anhydrides A process for the recovery of five-membered ring dicarboxylic acid anhydrides from aqueous solutions of the corresponding dicarboxylic acids which entails (a) washing the aqueous solution of the dicarboxylic acid with a water-insoluble tertiary amine, and... | 12/31/1985 |
| 4556754 | Process for the isomerization of isolated double bonds to conjugated double bonds in low-molecular weight homo- and/or copolymers of 1,3-dienes A process for the isomerization of isolated double bonds to conjugated double bonds in low-molecular weight homo- and/or copolymers of 1,3-dienes uses an isomerization catalyst optionally in the presence of a solvent, wherein the isomerization catalyst is... | 12/03/1985 |
| 4551392 | Composite materials and composite building elements based on EP(D)M Composite materials and composite building elements have two layers: (1) a layer obtained from a vulcanizable composition based on EP(D)M and (2) a layer obtained from a vulcanizable composition based on an elastomer component consisting of 5-50% by weight of a pol... | 11/05/1985 |
| 4550148 | Molding compositions based on high molecular weight polyalkylene terephthalates Improved molding compositions based on high-molecular polyalkylene terephthalates are obtained by heating at 240°-300° C. a melt containing a mixture of (A) a polyalkylene terephthalate having a viscosity number J of at least 50 cm3 /g, and (... | 10/29/1985 |
| 4549991 | Process for continuous hot phosgenation of amines This invention relates to a process for the production of organic isocyanates by the continous hot phosgenation of amines, whereby the solids are retained in the reactor by an appropriate separator and the isocyanate formed during the reaction is constant... | 10/29/1985 |
| 4547578 | Process for removing naphthoquinone from phthalic anhydride produced through air oxidation of naphthalene The invention relates to a process for removing naphthoquinone from phthalic anhydride produced by the air oxidation of naphthalene or mixtures containing naphthalene. Specifically, crude phthalic anhydride containing naphthoquinone is treated at a temper... | 10/15/1985 |
| 4544402 | 4-DL-Alkylester--alaninyl-6-chloro-S-triazines and the use thereof as herbicides 4-DL-alkylester-γ-alaninyl-6-chloro-S-triazines having the formula (I): ##STR1## wherein R1 is a straight or branched chain alkyl, alkoxy, alkoxyalkyl or alkylol radical which is unsubstituted or substituted by a cyclopentyl or cyclo... | 10/01/1985 |
| 4541897 | Distillation process for the production of dehydrated ethanol A distillation process for the production of dehydrated ethanol from dilute aqueous solutions of ethanol characterized in that the distillation is performed in a two-column system wherein the first column--for rectification--is operated under such a press... | 09/17/1985 |
| 4540439 | Process for preparation of gypsum shapes A process for preparing shaped articles from waste gypsum from wet-process phosphoric acid production comprises: (1) mixing wet calcium sulfate hemihydrate with 0.5-20% by wt. of calcium hydroxide or calcium oxide, (2) adjusting the total water content of said... | 09/10/1985 |
| 4528355 | Powder varnishes based on partially blocked isophorone diisocyanate isocyanurate and hydroxyl group containing polyester, and method for producing matte coatings A powder coating composition exhibiting good storage stability, having a particle size less than 100 microns and yielding a matte surface after hardening at a temperature of 170° to 220° C., comprising: a mixture of at least one hydroxyl group containing pol... | 07/09/1985 |
| 4526971 | Process for the production of polyalkylpiperidylamines A process for producing polyalkylpiperidylamines of the formula (I): ##STR1## wherein R1 is hydrogen or a C1 -C12 alkylradical; R2 and R3 are each C1 -C5 alkylradicals or R2... | 07/02/1985 |
| 4517395 | Process for the selective hydrogenation of polyunsaturated hydrocarbons in hydrocarbon mixtures A process for the selective hydrogenation of hydrocarbons having three and more carbon atoms and several double bonds or with triple bonds in monoene-containing hydrocarbon mixtures is described. These compounds are selectively hydrogenated to monoenes in... | 05/14/1985 |
| 4500697 | Mixture of substances suitable for use as a powder varnish or binder for powder varnishes A mixture of substances suitable as a powder varnish or a binder for powder varnishes containing an isocyanate component with partially or totally blocked isocyanate groups, and a polyhydroxyl component, wherein mixed trimers or mixtures of individual tri... | 02/19/1985 |
| 4500696 | Powder surface coatings Powder surface coatings of polyols and a polyisocyanate component, wherein blocked adducts of 2-methyl-1,5-pentanediisocyanate, 2-ethyl-1,4-butane diisocyanate or a mixture thereof are used is the polyisocyanate component, according to the formulas (I) an... | 02/19/1985 |
| 4500698 | One-component baking enamels One-component baking enamels of polyesters, which contain hydroxyl groups, and a polyisocyanate component, wherein the polyisocyanate component is a totally or partially blocked adduct or adducts of a mixture of 2-methyl-1,5-diisocyanatopentane (I) and 2-... | 02/19/1985 |
| 4475985 | Process for the production of a diaphragm for electrolytic cells The process relates to the formation of diaphragms, for example those used for alkali chloride electrolysis in an aqueous solution. The formation of a layer-type diaphragm, accreted on a hollow diaphragm support from a slurry having a high solids content ... | 10/09/1984 |
| 4465596 | Process for removing heavy metal ash from an aqueous soot suspension The invention relates to a process for removing heavy metal ash from an aqueous soot suspension like that found in the production of synthetic gas through partial gasification of heavy oils. This soot suspension is treated initially in the standard manner... | 08/14/1984 |
| 4459386 | Process for the production of polyacrylonitrilepolyphosphonic acid and its use as a flame retardant For the production of acrylonitrile polymers containing phosphonic acid groups and having phosphorus contents of 1-17% by weight, homo- or copolymers of acrylonitrile having molecular weights of 1,000-200,000 are reacted at temperatures of 120°-220° C. ... | 07/10/1984 |
| 4456778 | Separating the chlorination products from the reaction gases obtained by the chlorination of methane and methyl chloride The reaction gases from the chlorination of methane and preferably also methyl chloride, after removal of the HCl and drying, are subjected to the steps of partially condensing the dried stream of reaction gases at a pressure of 5-15 bars and at a tempera... | 06/26/1984 |
