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Rutgerswerke Aktiengesellschaft Patents
Assignee:
Rutgerswerke Aktiengesellschaft
Address:
both of, DE
No. of patents:
59
Patents:


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Patent Number Title Of Patent Date Issued
5429865 Composite materials July 4, 1995
A composite material comprising a fabric of high-modulus fiber material and optionally a portion of other synthetic fiber material and a binder, the binder layers being essentially disposed only between fabric plies, the binder being a resol modified with polyvinyl butyral, the resol con
5108914 Process for the synthesis of L-alpha-amino acids April 28, 1992
Microorganisms with the ability to cleave enantioselectively 5-substituted hydantoins to L-alpha-amino acids are cultivated in a known manner in a batch preparation. By one-time dosage of anondegradable enzyme inductor of the structure ##STR1## (where R.sub.1, R.sub.2 and X are s
5013591 Building sheeting and method of its manufacture May 7, 1991
A bituminous building sheeting which is compatible with hot mopping bitumen and bituminous cold adhesives and whose covering mass is modified with APP and IPP. The mass, homogenized under high shear forces is cooled off after the application of 180.degree. to 200.degree. C. at a cooling
4897443 Polysulfide sheeting January 30, 1990
Polysulfide sheeting is prepared by mixing a curable polysulfide oligomer or polymer, carbon black, and manganese dioxide as a hardening catalyst; forming the composition into a sheet; and curing the sheet at an elevated temperature. The sheeting has unusually high short-term heat resist
4780362 Bituminous roofing strip October 25, 1988
A roofing strip with a very wide range of plasticity and based on elastomer-modified bitumen is prepared by covering a support with a bitumen/rubber mixture in the ratio of 17/3-19/1 and irradiating the strip at a rate between 6 and 16.times.10.sup.4 Gy.
4701478 Radiation cross-linkable binding agents October 20, 1987
Radiation cross-linkable binding agents formed by reacting first an epoxy component with more than one epoxy group per molecule with at least one carboxylic acid in a molar ratio 1 of epoxy group per 0.5 to 0.9 carboxyl groups and second reacting the said first reaction product with at l
4634723 Furfuryl alcohol binders, methods for their production and use January 6, 1987
A binder material is disclosed formed from furfuryl alcohol suitable for the preparation of molded bodies and cores for molding for the foundry industry based on the following composition:40-60 weight percent higher molecular weight furfuryl alcohol formaldehyde condensation product28-40
4618521 Corrosion protection sheet October 21, 1986
A corrosion protective sheet for adhesion to steel sheets which is made from elastomers and natural resin modified bitumen and which contains up to about 10% organic and or inorganic fibrous material. The sheet is coated on the underside with a melt adhesive and on the upper side with a
4598138 Stable, phenolic modified hydrocarbon resins for leucopigments July 1, 1986
Stable phenolic-modified hydrocarbon resins with an OH number which is 4.5 or greater are resonably priced and toxicologically generally regarded as safe resins for the development of leucopigments, especially for the development of colors in pressure sensitive recording materials. The
4587291 Multicomponent aqueous resole binder with extended processability time May 6, 1986
Binders are described based on acid curing phenol resins and acid curing agents which, after mixing, have an extended processability time but nevertheless exhibit a rapid curing time at relatively low temperatures. They are obtained by using, as the resin, aqueous phenol resols and, as
4582910 Method for preparation of 4-halogenonaphthalic acid anhydrides April 15, 1986
A method for the preparation of 4-halogenonaphthalic acid anhydrides by halogenation of an aqueous solution of an alkali salt of the naphthalic acid with halogen or alkali metal hypohalogenite wherein a solution of the alkali metal salt of the naphthalic acid is treated with a water solu
4582591 Process for the separation of resinous substances from coal-base heavy oils and use of the fract April 15, 1986
Heavy oil derived from coal is diluted with organic solvent to a content of less than 10 weight percent of toluene-insoluble material. The mixture is then mixed with a non-aromatic solvent in a ratio of 1:3 to 5:1. With slow stirring of the heavy phase at a temperature of between 50.degr
4568727 Storage stable, heat curable mixtures of epoxy resins and method for preparing same February 4, 1986
Storage stable, heat curable mixtures obtained from epoxy resins as a binder system containing latent hardening agents as well as fillers and additive materials which have outstanding mechanical and electrical properties and which are obtained as epoxy resin components of an adduct o
4567272 Pyrrole containing 2-aminonitropyridine derivatives January 28, 1986
New 2-aminonitropyridine derivatives are disclosed of the formula: ##STR1## wherein the nitro group is in the 3- or 5-position and X represents hydrogen, an alkoxy group with 1 to 3 C atoms or an unsubstituted or alkyl- or hydroxyalkyl substituted amino group, the alkyl portion of wh
4546190 Method for producing 3,5,6-trichloro-1H-pyridine-2-on October 8, 1985
The compound 3,5,6-trichloro-1H-pyridine-2-on can be produced in technical quantities by passing chlorine gas into the gas space above a solution of 6-chloro-1H-pyridine-2-on in an aqueous carboxylic acid solution and maintaining the reaction temperature between 15.degree. and 30.degree.
4539388 Acid-modified, aromatic hydrocarbon resins and method for their production September 3, 1985
Aromatic hydrocarbon resins are disclosed prepared from aromatic, unsaturated hydrocarbons and a melted aromatic carboxylic acid polymerized in the presence of a Friedel-Crafts catalyst. The resin may be used in printing inks, for paper sizing, for coatings and other applications where
4534949 Process for the manufacture of molded carbon bodies August 13, 1985
A process for the manufacture of molded carbon bodies directly from high-boiling aromatic hydrocarbon fractions derived from coal or mineral oil, without additional binding agents and without using high pressures, is disclosed. Molds are filled with the starting material, distillation
4523016 Process for the catalytic dehydrogenation of piperidine June 11, 1985
The catalytic dehydrogenation of piperidine to pyridine in the gas phase using hydrogen as the carrier gas is carried out with a silicon dioxide carrier activated with copper, nickel and chromium as the catalyst, the metals copper, nickel and chromium being present in an amount of 5-
4510090 Method for the production of phenanthrenequinone April 9, 1985
Improvement of the yield and purity of phenanthrenequinone during its production by oxidation of phenanthrene by means of chromic acid in a sulfuric acidic medium is achieved by preparing a dispersion made up of phenanthrene, alkali dichromate and water at 95.degree.-100.degree. C.,
4473606 Foils September 25, 1984
An anticorrosion perforated foil for fusion onto metal substrates comprising 60 to 90% by weight of bitumen, 0.5 to 7% by weight of styrene-butadiene rubber, 5 to 25% by weight of a bitumen modified with polymers, 0.5 to 7.5% by weight of natural resin and 0.5 to 10% by weight of org
4471106 Phenol-modified hydrocarbon resins with a high OH-number, method for the preparation thereof September 11, 1984
Phenolic-modified hydrocarbon polymers with a high OH-number yet with excellent compatibility with non-polar solvents are suitable for preparing adhesives and coating materials. The polymers are obtained by isothermal, catalytic copolymerization of:30-40% by weight phenolic compounds,65-
4444650 Process for coking high-boiling aromatic hydrocarbon mixtures to form carbon materials having co April 24, 1984
Disclosed is a continuous or discontinuous process for coking high-boiling aromatic hydrocarbons to form high grade carbon products having only a narrow range of variation of physical and chemical properties. High-boiling aromatic hydrocarbon mixtures are coked in thin layers accordi
4430194 Method for the production of a highly aromatic pitch-like coal by-product February 7, 1984
An improvement in the method for the production of a highly aromatic pitch-like coal by-product by dissolving comminuted coal or similar solid carbon-containing raw materials with aromatic solvents at elevated temperature is disclosed wherein the solid materials are dissolved at atmo
4430193 Process for dissolving coal in hydrocarbon mixtures February 7, 1984
A process is described for bringing ground coal or similar carbon-containing raw materials into solution with aromatic solvents under elevated pressure and at elevated temperature. The solvents used are high-aromatic residues obtained from the pyrolysis of petroleum fractions, having
4430175 Process for the electrochemical conversion of coal and use of the reaction products February 7, 1984
Ground coal is dispersed in an aqueous electrolyte and is alternately oxidized anodically and reduced cathodically. The reaction gases and the liquid hydrocarbons obtained and other volatile organic compounds are processed and used in the customary manner. The reactive groups formed in
4429172 Process for the production of modified pitches and low boiling aromatics and olefins and use of January 31, 1984
A process for the preparation of modified pitches and low boiling aromatics and olefins is described. Waste plastic which consists of polymeric chains of olefins is subjected to a thermal treatment in the presence of high boiling aromatics. The modified pitches may be used for the produc
4427526 Process for the production of hydrogenated aromatic compounds and their use January 24, 1984
A process is disclosed for the production of hydrogenated aromatic compounds and mixtures thereof by thermal treatment of aromatic oils or mixtures, derived from coal or petroleum, wherein the improvement over the prior art resides in thermally treating aromatic oils of boiling range
4425389 Heat-applicable and hardenable sealing compositions and its use January 10, 1984
A polysulfide sealing composition is described which contains, in addition to the hardening agents and optional fillers, softeners and other conventional additives, a mixture of a solid polysulfide rubber with terminal SH groups and a liquid polysulfide polymer with terminal SH group
4415429 Process for the preparation of highly aromatic pitchlike hydrocarbons November 15, 1983
A process for the production of a highly aromatic pitch-like hydrocarbon by disintegration of comminuted coal or similar carbonaceous raw material with hydrocarbon mixtures as solvent at elevated temperature and pressure.
4414192 Method of producing a highly reactive pitch fraction and its usage November 8, 1983
A method of producing a highly reactive pitch fraction is disclosed. Coal-tar pitch is extracted with hot chloroform and the pitch solution treated with solid iodine. The solid reaction products are separated and, in the presence of chloroform, decomposed with an aqueous ammonia solu
4385002 Monoaryl thallium III perchlorates and their preparation May 24, 1983
A process for the preparation of monoaryl thallium III perchlorates substantially free of isomers comprising reacting at atmospheric pressure at 0.degree. to 80.degree. C. thallium III perchlorate, 1 to 6 moles of a carboxylic acid, 1 to 6 moles of an aromatic compound and 2 to 15 moles
4384082 Polymerization process May 17, 1983
In a process for the polymerization of unsaturated aromatic hydrocarbons with BF.sub.3 -etherate or BF.sub.3 -phenolate as the polymerization catalyst, the improvement comprising using BF.sub.3 -alcoholates as a co-catalyst.
4384054 Asbestos-free friction material May 17, 1983
An asbestos-free friction material useful for brake linings, clutches, etc. comprising 5 to 25% by weight of a hardenable binder or binder mixture, a reinforcing fibrous material and conventional fillers, abrasives and lubricants the said reinforcing material consisting essentially of 1
4380454 Coking quality of coals with insufficient coking properties April 19, 1983
Upgrading coke quality of coals by adding a pitch-like product with a softening point (K-S) of 90.degree.-160.degree. C. to the coal. The additive is obtained by treating finely divided coal or other carbon containing raw material with hydrocarbon solvents derived from coal and petro
4379133 Process for anisotropic carbon production April 5, 1983
An improved process for treating coal tar pitch to form anisotropic carbon comprising treating coal tar pitch with picric acid, recovering the resulting picrates, decomposing the picrates and heating the resulting aromatic hydrocarbons to obtain anisotropic carbon in less time.
4377699 5-Chloro-indole preparation March 22, 1983
An improved process for the preparation of 5-chloro-indole comprising reacting indoline in a chlorine-inert organic solvent with an acylating agent of an organic carboxylic acid to obtain the corresponding 1-acyl-indoline, reacting the latter in the presence of water and a basic agen
4377040 Process for the modification of wood March 22, 1983
A process is described for the modification of wood and wood products by heat treatment in a closed, heatable vessel, wherein the water content of the starting material is controlled to be no higher than 10% by weight.
4373038 Asbestos-free friction material February 8, 1983
An asbestos-free friction material useful for brake linings, clutches, etc. comprising 5 to 25% by weight of a hardenable binder or binder mixture, 1 to 70% by weight of a reinforcing fibrous material and conventional additives, the said reinforcing material consisting essentially of 2.5
4357472 Process for the production of thionaphthene from thionaphthene sulfonic acid November 2, 1982
A process for the production of thionaphthene by dissociation of thionaphthene sulfonic acid such as obtained, for example, in the partial sulfonation of naphthalene fractions of coal tar, characterized in that the density of the reaction mixture is maintained essentially constant du
4357277 Novel process for the preparation of N,N'-bisacyl hydrazides November 2, 1982
An improved process for the preparation of acyl hydrazides of the formula ##STR1## wherein A and B individually are a group of the formula ##STR2## wherein R.sub.1 is selected from the group consisting of hydrogen and alkyl of 1 to 4 carbon atoms, x is 0 or 1 and R.sub.2 and R.su
4339328 Process for the production of high grade carbonaceous binders July 13, 1982
A process is described for the production of high grade carbonaceous binders, wherein an aromatic high grade carbonaceous material is produced from 5-40% by weight of reduced or low ash coal or similar carbon containing raw materials by treatment with 20-80% by weight of high-boiling
4332728 Process for the preparation of bisacyl hydrazines June 1, 1982
An improved process for the preparation of acyl hydrazides of the formula ##STR1## wherein A and B individually are a group of the formula ##STR2## wherein R.sub.1 is selected from the group consisting of hydrogen and alkyl of 1 to 4 carbon atoms, x is 0 or 1 and R.sub.2 and R.su
4304606 Plasticized coal tar pitch, composition containing same and its use December 8, 1981
This invention relates to a plasticized coal tar pitch comprising a mixture consisting essentially of about 50 to about 80 weight percent of a coal tar pitch having a softening point of about 40.degree. to about 75.degree. C. (Kramer-Sarnow); and about 50 to about 20 weight percent of a
4268649 Binder for cellulose fiber reinforced board material May 19, 1981
A binder for cellulose fiber reinforced board material comprising a mixture of:(a) a weakly alkaline phenol-formaldehyde condensate resin with a phenolic compound to formaldehyde mol ratio of 1:1.5 to 1:3.0, preferably of 1:1.8 to 1:2.7, and with an alkali content of .ltoreq.15% by weigh
4259171 Process for the separation of quinoline-insoluble components from coal tar pitch March 31, 1981
Quinoline-insoluble components are separated from coal tar pitch by treating the coal tar pitch which has a softening point of greater than 60.degree. C. (according to the method of Kraemer-Sarnow) with a solvent mixture comprising at least one solvent with paraffinic characteristics
4256892 Preparation of bis-2-pyridyl-disulfides March 17, 1981
In a process for the preparation of bis-2-pyridyl-disulfide or bis-(2-pyridyl-1-oxide)-disulfide optionally substituted on the pyridyl ring with at least one substituent selected from the group consisting of halogen and alkyl and alkoxy of 1 to 4 carbon atoms by oxidation of the corr
4228083 Process for the production of .beta.-(5-nitro-2-furyl)-acrolein October 14, 1980
An improved process for the production of .beta.-(5-nitro-2-furyl)-acrolein by reacting 5-nitro-furfural and acetaldehyde in the presence of a secondary amine, the improvement comprises effecting the reaction in an aliphatic carboxylic acid of 2 to 4 carbon atoms.
4218400 Process for the production of fluorenone by catalytic oxidation of fluorene August 19, 1980
An improved process for the production of pure fluorenone by oxidation of fluorene with air or oxygen at ambient temperature in the presence of a quaternary salt, the improvement comprising carrying out the reaction in a suspension of fluorene or a fluorene-containing fraction in an apro
4201835 Boiling water and weather resistant cellulose fiber reinforced board material May 6, 1980
A binder for cellulose fiber reinforced board material comprising a mixture of:(a) a weakly alkaline phenol-formaldehyde condensate resin with a phenolic compound to formaldehyde mol ratio of 1:1.5 to 1:3.0, preferably of 1:1.8 to 1:2.7, and with an alkali content of .ltoreq. 15% by weig
4149019 Process for the transalkylation of nuclear methylated phenols April 10, 1979
A process for the transalkylation of nuclear methylated phenols into o-cresol in the liquid or gaseous phase is conducted in the absence of catalysts and in the presence of phenol.
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