Abstract: 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 coal tar fraction rich in crystals and having a boiling point of about 350.degree. C. to about 450.degree. C. The mixture is suitable for blending with crude oil bitumen for producing a binder suitable for application to roadways.
Type:
Grant
Filed:
June 6, 1979
Date of Patent:
December 8, 1981
Assignee:
Rutgerswerke Aktiengesellschaft
Inventors:
Heinrich Louis, Helmut Kohler, Rudolf Oberkobusch, Gerd Collin, Volker Potschka
Abstract: 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 weight NaOH or KOH, related to the solids content of the resin;(b) a di- and/or poly-functional isocyanate in a quantity of from 5% to 25% by weight, related to (a); and(c) a tertiary alkyl and/or aralkyl amine and/or alkylene polyamine in a quantity of from 0.1% to 5% by weight, related to (a),a boiling water and weather resistant board material containing said binder and a process for the production of said board material.
Abstract: 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 and at least one tar solvent, wherein the treatment is carried out at a temperature in the range of 200.degree. to 270.degree. C.
Abstract: 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 corresponding 2-mercapto-pyridine or its N-oxide, the improvement comprising effecting the oxidation in an aqueous acid media containing an alkali metal or alkaline earth metal chlorite.
Type:
Grant
Filed:
November 8, 1979
Date of Patent:
March 17, 1981
Assignee:
Rutgerswerke Aktiengesellschaft
Inventors:
Manfred Maurer, Winfried Orth, Werner Fickert
Abstract: 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.
Type:
Grant
Filed:
November 8, 1979
Date of Patent:
October 14, 1980
Assignee:
Rutgerswerke Aktiengesellschaft
Inventors:
Emmerich Pastorek, Winfried Orth, Werner Fickert
Abstract: 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 aprotic immiscible with water solvent, such as a .alpha.-methyl naphthalene, which contains and is primed with a 30%-60% aqueous alkali metal hydroxide solution, and intimately mixing the organic and aqueous phases during the reaction.
Abstract: 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 weight NaOH or KOH, related to the solids content of the resin;(b) a di- and/or poly-functional isocyanate in a quantity of from 5% to 25% by weight, related to (a); and(c) a tertiary alkyl and/or aralkyl amine and/or alkylenpolyamine in a quantity of from 0.1% to 5% by weight, related to (a).a boiling water and weather resistant board material containing said binder and a process for the production of said board material are disclosed.
Abstract: 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.
Type:
Grant
Filed:
October 4, 1977
Date of Patent:
April 10, 1979
Assignee:
Rutgerswerke Aktiengesellschaft
Inventors:
Arnold Alscher, Heinrich Steinke, Gerd Collin, Gunter Storch
Abstract: Molding compositions, based on unsaturated polyester resins, unsaturated monomers, catalysts, inorganic and/or organic fillers and/or reinforcing agents, dyestuffs and/or pigments, lubricants and optionally inhibitors, containing a siloxane of the formula ##STR1## wherein A IS 0 OR 1b is a number from 1 to 500, provided that when a is 0, b must be equal to or greater than 3 and the compound is a cyclosiloxane,R.sup.1 is hydrogen, alkyl or trimethylsilyl,R.sup.2 is alkyl of 8 to 32 carbon atoms, --R.sup.4 OCOR.sup.5, or --R.sup.4 OR.sup.6, where R.sup.4 is a bivalent radical, R.sup.5 is alkyl of 12 to 22 carbon atoms and R.sup.6 is alkyl of 8 to 22 carbon atoms, provided that up to 80 mole % of the above-mentioned radicals defining R.sup.2 may be methyl and provided further that at least one R.sup.2 per molecule is other than methyl, andR.sup.
Type:
Grant
Filed:
May 9, 1977
Date of Patent:
October 17, 1978
Assignee:
Rutgerswerke Aktiengesellschaft
Inventors:
Werner Schafer, Hans-Albrecht Scholz, Siegfried Wilhelm
Abstract: A process for the continuous production of indene resins comprising the steps of continuously pre-heating an indene-containing hydrocarbon mixture, continuously adding a boron trifluoride-adduct catalyst and the pre-heated indene-containing mixture to a reaction tube, continuously isothermally reacting the indene-containing mixture with the catalyst at the temperature of the pre-heated mixture to form an indene-containing resin, continuously decomposing the catalyst, and continuously separating the indene-containing resin from the decomposed catalyst and unreacted substances.
Type:
Grant
Filed:
July 12, 1976
Date of Patent:
September 12, 1978
Assignee:
Rutgerswerke Aktiengesellschaft
Inventors:
Hans Spengler, Gunter Bucksch, Manfred Morgenstern
Abstract: An unsaturated, branched hydroxyester resin produced by the esterification of a saturated or unsaturated aliphatic or aromatic dicarboxylic acid with a mixture comprising about 75 - 97 mole percent of a bivalent alcohol and about 25 - 3 mole percent of a multifunctional alcohol having at least three hydroxy groups, said hydroxyester resin having a hydroxyl number of about 30 - 110, is employed in the production of quick hardening powder enamels capable of forming plastic coatings.
Abstract: A storage-stable, very quickly hardenable, one-component sealant comprises a mercapto-terminated liquid polymer having uniformly distributed therein a curing agent for the polymer, wherein the curing agent is in a micro-encapsulated state.
Type:
Grant
Filed:
May 4, 1976
Date of Patent:
July 11, 1978
Assignee:
Rutgerswerke Aktiengesellschaft
Inventors:
Lothar Hockenberger, Manfred Soyka, Gerhard Wilhelm
Abstract: In a process for obtaining substantially sulfur free pure naphthalene from bituminous coal tar and thionaphthene as a by-product, a de-phenolized thionaphthene-containing naphthalene fraction from oxidative purification is extracted with concentrated sulfuric acid and acetic acid anhydride in benzene. The thionaphthene is converted into its sulfonic acid derivative and water washed from the benzene-naphthalene mixture. The benzene is distilled leaving pure naphthalene. The sulfonic acid group is cleaved from the thionaphthene with superheated steam to yield thionaphthene.
Type:
Grant
Filed:
August 4, 1976
Date of Patent:
July 4, 1978
Assignee:
Rutgerswerke Aktiengesellschaft
Inventors:
Georg Grigoleit, Helmut Kohler, Gerd Collin, Kurt Matern
Abstract: A condensation product of a polyepoxide with a monoalcohol or monocarboxylic acid is reacted with a monoisocyanatoallyl or methallyl carbamate to form a novel compound which can be mixed with a vinyl monomer to form a radiation hardenable lacquer composition.
Abstract: A moulding composition comprising (a) a melamineformaldehyde resin having a molar ratio of melamine to formaldehyde in the range 1:1.5 to 1:2.5 which upon hardening is capable of withstanding heating at 200.degree. C concerned for 2 hours in air without causing significant structural damage or color change to moulded articles made from moulding compositions in which it has been incorporated, (b) an accelerator derived from a mono- or dibasic organic acid, (c) an inorganic filler having low adsorption characteristics and an oil adsorption value of 10 to 40, (d) a further inorganic filler and (e) an external lubricant comprising at least one carboxyorganosiloxane esterified with an alcohol containing up to 4 carbon atoms and the process of preparing said moulding compositions.
Type:
Grant
Filed:
June 10, 1975
Date of Patent:
December 6, 1977
Assignee:
Rutgerswerke Aktiengesellschaft
Inventors:
Werner Schafer, Wolfram Busch, Hermann Wallhausser, Manfred Richter, Siegfried Wilhelm
Abstract: A process for the catalytic conversion of o-ethylaniline to indole in a gaseous phase and in the presence of hydrogen or steam and an SiO.sub.2 -containing catalyst modified by chromium dioxide and copper, wherein said conversion is conducted at about 400.degree. - 700.degree. C.; said catalyst comprising at least about 15% by weight copper and at least about 8% by weight of a chromate of a metal of Group IIA of the Periodic Table. A catalyst for use in the invention is provided.
Type:
Grant
Filed:
November 15, 1974
Date of Patent:
November 9, 1976
Assignee:
Rutgerswerke Aktiengesellschaft
Inventors:
Georg Grigoleit, Gerd Collin, Rudolf Oberkobusch
Abstract: Substituted quinones are catalytically hydrogenated in the presence of a mixture of (1) low unbranched alcohols and (2) hydrocarbons which are inert and fluid under the conditions of the hydrogenation reaction and which may be aromatic, aliphatic or cycloaliphatic to economically produce corresponding substituted hydroquinones of high purity and low discoloration and in high yields thereof.