Patents by Inventor Hans P. Rath
Hans P. Rath has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 5556932Abstract: Chlorine-free, non-drying copolymer of isobutene with C.sub.4 -C.sub.10 -dienes having isolated or conjugated double bonds and containing at least 60 mol % of terminal double bonds, and a process for their preparation.Type: GrantFiled: February 25, 1994Date of Patent: September 17, 1996Assignee: BASF AktiengesellschaftInventors: Hans P. Rath, Konrad Knoll, Helmut Mach
-
Patent number: 5408018Abstract: A process for preparing highly reactive polyisobutenes with a content of terminal vinylidene groups of more than 80 mol % and an average molecular weight of 500-5000 Dalton by the cationic polymerization of isobutene or isobutene-containing hydrocarbon feeds in liquid phase with the aid of boron trifluoride as catalyst and at from 0.degree. C. to -60.degree. C., comprises polymerizing in the presence of secondary alcohols with 3-20 carbon atoms and/or ethers with 2-20 carbon atoms.Type: GrantFiled: August 13, 1993Date of Patent: April 18, 1995Assignee: BASF AktiengesellschaftInventor: Hans P. Rath
-
Patent number: 5286823Abstract: A process for preparing highly reactive polyisobutenes with a content of terminal vinylidene groups of more than 80 mol % and an average molecular weight of 500-5000 Dalton by the cationic polymerization of isobutene or isobutene-containing hydrocarbon feeds in liquid phase with the aid of boron trifluoride as catalyst and at from 0.degree. C. to -60.degree. C., comprises polymerizing in the presence of secondary alcohols with 3-20 carbon atoms and/or ethers with 2-20 carbon atoms.Type: GrantFiled: June 22, 1992Date of Patent: February 15, 1994Assignee: BASF AktiengesellschaftInventor: Hans P. Rath
-
Patent number: 5194068Abstract: The invention relates to a fuel for gasoline engines and diesel engines, containing small amounts of an ester of a mono- and/or poly-carboxylic acid with an alkyl alkanolamine or alkyl aminopolyalkylene glycol of the general formula I ##STR1## in which R.sub.1 is a C.sub.6 -C.sub.30 -alkyl radical,R.sub.2 is a C.sub.6 -C.sub.30 -alkyl radical or a hydroxyalkyl radical of the general formula II ##STR2## and R.sub.3 is a hydroxylalkyl radical of formula II, in which R.sub.4 is hydrogen or a C.sub.1 -C.sub.6 -alkyl radical and m is an integer from 0 to 100.Type: GrantFiled: June 24, 1991Date of Patent: March 16, 1993Assignee: BASF AktiengesellschaftInventors: Juergen Mohr, Knut Oppenlaender, Roland Schwen, Hans P. Rath, Juergen Thomas, Hans-Henning Vogel
-
Patent number: 5191044Abstract: A process for the preparation of polyisobutene from isobutene and/or hydrocarbons containing isobutene in the presence of a complex of BF.sub.3 and an alcohol, wherein the free BF.sub.3 is substantially removed from the complex solution and/or from the reaction chamber.Type: GrantFiled: October 8, 1991Date of Patent: March 2, 1993Assignee: BASF AktiengesellschaftInventors: Hans P. Rath, Herwig Hoffmann, Peter Reuter, Helmut Mach
-
Patent number: 5123932Abstract: Motor fuel compositions contain alkoxylation products of oxo oils or their fractions or esters thereof, which are alkoxylated with propene oxide and/or butene oxides and/or not more than minor aomunts of ethene oxide.Type: GrantFiled: May 9, 1990Date of Patent: June 23, 1992Assignee: BASF AktiengesellschaftInventors: Hans P. Rath, Herwig Hoffmann, Volker Vogt, Hans Horler, Helmut Mach, Juergen Thomas
-
Patent number: 5112364Abstract: Gasolines containing polyetheramine and/or polyetheramine derivatives to improve valve cleaning properties.Type: GrantFiled: April 29, 1991Date of Patent: May 12, 1992Assignee: BASF AktiengesellschaftInventors: Hans P. Rath, Helmut Mach, Knut Oppenlaender, Willibald Schoenleben, Hans-Henning Vogel
-
Patent number: 5004478Abstract: A motor fuel for internal combustion engines contains a small amount of an additive comprising(a) a conventional amino- or amido-containing detergent for cleaning, or keeping clean, the intake system and(b) as base oil a mixture of(ba) a polyether based on propylene oxide or butylene oxide and having a molecular weight of not less than 500 and(bb) an ester of a monocarboxylic or polycarboxylic acid and an alkanol or polyol, this ester having a minimum viscosity of 2 mm.sup.2 /s at 100.degree. C.Type: GrantFiled: October 31, 1989Date of Patent: April 2, 1991Assignee: BASF AktiengesellschaftInventors: Hans-Henning Vogel, Hans P. Rath, Claus P. Jakob, Knut Oppenlaender
-
Patent number: 4959077Abstract: A fuel for gasoline engines contains a small amount of a copolymer of an olefin of from 2 to 40 carbon atoms and/or a cycloolefin of from 3 to 10 carbon atoms with maleic anhydride and/or a copolymer of an alkyl vinyl ether of from 1 to 30 carbon atoms in the alkyl group and/or a cycloalkyl vinyl ether of from 3 to 10 carbon atoms in the alkyl group with maleic anhydride and/or a copolymer of an alkyl vinyl ether of from 1 to 30 carbon atoms in the alkyl group and/or a cycloalkyl vinyl ether of from 3 to 10 carbon atoms in the alkyl group and an olefin of from 2 to 40 carbon atoms and/or a cycloolefin of from 3 to 10 carbon atoms with maleic anhydride having a total molecular weight of from 500 to 20,000 g per mole, the carboxyl groups on the copolymer having been wholly or partly converted with an alkali metal or alkaline earth metal to form an alkali metal or alkaline earth metal salt and the remaining carboxyl groups having been converted with an alcohol and/or an amine of up to 50 carbon atom into the corType: GrantFiled: September 12, 1988Date of Patent: September 25, 1990Assignee: BASF AktiengesellschaftInventors: Franz-Dieter Martischius, Hans P. Rath, Hans-Henning Vogel, Norbert Greif, Knut Oppenlaender, Walter Denzinger, Heinrich Hartmann
-
Patent number: 4859210Abstract: Fuel motor compositions and lubricant compositions contain small amounts of one or more polybutyl or polyisobutyl alcohols of the formula (I)R--CH.sub.2 --OH (I)where R is a polybutyl or polyisobutyl radical derived from isobutene and up to 20% by weight of n-butene, or a corresponding (poly)alkoxylate or a corresponding carboxylate of the polybutyl or polyisobutyl alcohol.These additives reduce deposition at the valves of piston engines.Type: GrantFiled: January 5, 1988Date of Patent: August 22, 1989Assignee: BASF AktiengesellschaftInventors: Dieter Franz, Rudolf Kummer, Helmut Mach, Hans P. Rath
-
Patent number: 4844714Abstract: Fuels for gasoline engines and diesel engines contain small amounts(A) of an alkoxylate which is obtained by reacting ethylene oxide, propylene oxide or butylene oxide with a mono- or polyhydroxy compound and has a number average molecular weight (molecular mass) of from 500 to 6,000 and(B) of an imide or amidoimide, or a mixture of these, obtained from nitrilotriacetic acid and/or ethylenediaminetetraacetic acid and an amine of 7 to 18 carbon atoms, or a mixture of such amines, of the formula I ##STR1## where the radicals X are identical or different --HN--R radicals or adjacent radicals X are the radical >N--R and form a ring ##STR2## m is 0 or 1 and R is a straight-chain or branched aliphatic radical of 7 to 18 carbon atoms.Type: GrantFiled: March 4, 1988Date of Patent: July 4, 1989Assignee: BASF AktiengesellschaftInventors: Hans-Henning Vogel, Hans P. Rath, Knut Oppenlaender, Charalampos Gousetis
-
Patent number: 4832702Abstract: The fuel or lubricant composition proposed contains one or more polybutyl or polyisobutylamines of the general formula I ##STR1## where R.sub.1 is a polybutyl- or polyisobutyl radical derived from isobutene and up to 20% by weight of n-butene and R.sub.2 and R.sub.3 are identical or different and are each hydrogen, an aliphatic or aromatic hydrocarbon, a primary or secondary, aromatic or aliphatic aminoalkylene radical or polyaminoalkylene radical, a polyoxyalkylene radical or a hetaryl or heterocyclyl radical, or, together with the nitrogen atom to which they are bonded, form a ring in which further hetero atoms may be present.Type: GrantFiled: March 25, 1987Date of Patent: May 23, 1989Assignee: BASF AktiengesellschaftInventors: Rudolf Kummer, Dieter Franz, Hans P. Rath
-
Patent number: 4822945Abstract: Decene oligomers useful with or without hydrogenation as basis for synthetic lubricating oils are prepared by oligomerizing decene-1 in the presence of an alkylaluminum chloride catalyst and an alkyl halide cocatalyst, in a first reaction stage the decene-1 being mixed with the catalyst at from 0 to +25.degree. C. and being kept in contact therewith within the same temperature range for not less than 15 minutes and in a second reaction stage the cocatalyst being added at from 0 to +35.degree. C. in the course of a period of from 15 to 180 minutes.Type: GrantFiled: December 3, 1987Date of Patent: April 18, 1989Assignee: BASF AktiengesellschaftInventors: Klaus Bronstert, Helmut Mach, Hans P. Rath, Hans-Michael Walter
-
Patent number: 4663406Abstract: Isobutylene polymers are prepared by polymerizing the monomers at from 0.2 to 20 bar and from -130.degree. and +60.degree. C. in the presence of from 0.01 to 20 mmol of a boron halide catalyst system which contains as cocatalyst a carboxylic anhydride or carbonyl halide, preferably an aliphatic or aromatic, unsubstituted or halogen-substituted C.sub.4 -C.sub.18 -carboxylic anhydride of C.sub.2 -C.sub.12 -carbonyl halide and where appropriate also a customary polymerization accelerant in customary amounts, in the presence or absence of an inert solvent with dissipation of the heat of reaction.Type: GrantFiled: March 5, 1986Date of Patent: May 5, 1987Assignee: BASF AktiengesellschaftInventors: Klaus Bronstert, Waldhelm Hochstein, Heinrich Mohr, Gerhard Sandrock, Hans-Henning Vogel, Hans P. Rath
-
Patent number: 4599433Abstract: Olefinically unsaturated hydrocarbons, in particular dimeric or polymeric isobutene derivatives, which have a mean number average molecular weight M.sub.n of from 100 to 3000, are reacted with maleic anhydride in a molar ratio of maleic anhydride to olefin of from 0.2 to 3.0, in the presence of from 1 to 5000 ppm by weight of an alkoxide of titanium, of zirconium, of vanadium or of aluminum, at from 150.degree. to 280.degree. C., with formation of the corresponding succinic anhydride. These products are used for the preparation of anticorrosive agents or oil additives.Type: GrantFiled: March 28, 1985Date of Patent: July 8, 1986Assignee: BASF AktiengesellschaftInventors: Klaus Bronstert, Hans-Henning Vogel, Hans P. Rath
-
Patent number: 4587307Abstract: The processing properties of isobutene polymers when reacted with maleic anhydride are improved by a method in which these polymers are brought into contact, for an effective period,with aluminum oxide and/or a completely or partially hydrated aluminum oxide at 50.degree.-280.degree. C., and/orwith boron oxide and/or a completely or partially hydrated boron oxide and/or with titanium dioxide and/or a partially hydrated titanium dioxide and/or with a completely or partially hydrated silicon dioxide at 0.degree.-280.degree. C.Type: GrantFiled: October 3, 1984Date of Patent: May 6, 1986Assignee: BASF AktiengesellschaftInventors: Klaus Bronstert, Waldhelm Hochstein, Hans-Henning Vogel, Hans P. Rath
-
Patent number: 4369227Abstract: Particulate styrene polymers which contain a blowing agent and are surface-coated with from 0.05 to 1% by weight of an ester. The coating agent is a hydroxycarboxylic acid ester, or an ester of a carboxylic acid with an oxyalkylated alcohol; tristearyl citrate is a preferred ester.The styrene polymers can be used to produce foam moldings, with short mold dwell times and good welding of the foam particles.Type: GrantFiled: March 10, 1982Date of Patent: January 18, 1983Assignee: BASF AktiengesellschaftInventors: Klaus Hahn, Hans P. Rath, Heinz Krapf, Isidoor De Grave, Manfred Walter
-
Patent number: 4287258Abstract: Particulate styrene polymers which contain a blowing agent and are surface-coated with a glycerol dialkyl ether, preferably mixed with a glycerol ester. The particles can be foamed, and the foamed particles can be fused to form moldings.Type: GrantFiled: September 19, 1980Date of Patent: September 1, 1981Assignee: BASF AktiengesellschaftInventors: Klaus Hahn, Hans P. Rath, Manfred Walter