| Patent Number |
Title Of Patent |
Date Issued |
| 6284945 |
Zea mays (L.) with capability of long term, highly efficient plant regeneration including fertil |
September 4, 2001 |
| Protoplasts which regenerate reproducibly in a short time to normal, fertile plants can be regenerated from an auxin-autotrophic genotype of Zea mays (L.). Starting from immature embryos on hormone-free media, an auxin-autotrophic, embryogenic callus is formed on the shoot basis of the |
| 6184293 |
Molding composition based on fluoropolymers and process for producing foam material therefrom |
February 6, 2001 |
| The invention relates to a molding composition based on fluoropolymers which additionally contain from 1 to 50% by weight of at least one polymer containing sulfoxide groups. The polymer containing sulfoxide groups comprises, in particular, polyarylene sulfoxide units of the formula: |
| 6040375 |
Composite foams, processes for their preparation and their use |
March 21, 2000 |
| The invention relates to a composite foam comprising from 10 to 90% by volume of SiO.sub.2 aerogel particles and from 90 to 10% by volume of a foam, preferably a polyurethane and/or polyolefin foam, a process for its preparation and its use. |
| 6025153 |
Selectable vectors for human T cells |
February 15, 2000 |
| Selectable Herpesvirus saimiri vectors which have a selection gene inserted into a junction region of the L- and H-DNA are described. Vectors of this type are able persistently to infect human T cells and thus are suitable for the expression of foreign genes in human T cells. An addition |
| 6020444 |
Process for preparing a cycloolefin copolymer |
February 1, 2000 |
| The present invention relates to a process for preparing a cycloolefin copolymer by polymerization of at least one cyclic olefin and at least one acyclic olefin in the presence of a catalyst comprising at least one metallocene compound of the formula I, ##STR1## where L is a .pi. |
| 5955041 |
Natural circulation reactor and use for producing linear and cyclic acetals |
September 21, 1999 |
| This invention relates to a reactor 1 for the continuous production of linear or cyclic acetals, in particular trioxane, dioxolane, tetroxane, dimethoxymethane, diethoxymethane, diethoxyethane and dibutoxyethane. This reactor has internal adjacently arranged evaporator elements 2, which |
| 5840993 |
Water-soluble cobalt catalysts, process for their preparation and their use as hydro-formylation |
November 24, 1998 |
| The invention relates to cobalt carbonyl catalysts of the formula (I) ##STR1## where R is --CH(CH.sub.2 OCH.sub.2 CH.sub.3).sub.2 or --C.sub.2 H.sub.4 (OCH.sub.2 CH.sub.2).sub.n OY, with n=1 to 12 and Y=H or CH.sub.3, and also a process for their preparation and their use as hydrofor |
| 5763719 |
Thermally stable fullerene derivatives and process for producing the same |
June 9, 1998 |
| A fullerene derivative of the formula I ##STR1## where the symbols and indices have the following meanings: F is a fullerene radical of the formula (C.sub.20+2m), where m is a number from 1 to 50R.sup.1 to R.sup.8 are identical or different and are each H, CO.sub.2 R.sup.9, CN, C |
| 5750221 |
Abrasion-resistant fluoropolymer mixtures |
May 12, 1998 |
| An abrasion-resistant fluoropolymer mixture comprising(A) from 75 to 99% by weight of a fluorocarbon polymer(B) from 1 to 25% by weight of an oxidized polyarylene sulfide and, based on the sum (A)+(B),(C) from 0 to 15% by weight of a filler,is used for the production of feed pipes for Bowden cab |
| 5744021 |
2-alkylmercapto-4-(trifluoromethyl)benzoic esters and a process for their preparation |
April 28, 1998 |
| The invention relates to 2-alkylmercapto-4-(trifluoromethyl)benzoic esters of the formula (II), in which R.sup.1 and R.sup.2 are, independently of each other, (C.sub.1 -C.sub.6) alkyl, and a process for their preparation, which comprises reacting 3,4-dichlorobenzotrifluoride electrochemi |
| 5741931 |
Phosphepinium salts |
April 21, 1998 |
| Phosphepinium Salts ThereofThe present invention relates to phosphonium salts of the formula (I) ##STR1## in which Ar--Ar is a biphenyl radical, a 1-phenylnaphthyl radical or a 1,1'-binaphthyl radical, each CH.sub.2 group is arranged in the ortho position to the Ar--Ar bond, R is F, |
| 5736603 |
Electrically conductive thermoplastic composite materials and a process for their preparation |
April 7, 1998 |
| The invention relates to electrically conductive thermoplastic composite materials which have specific volume resistances of less than 10.sup.9 ohm cm and comprise 0.1 to 70% by volume of electrically conductive fibers impregnated with a thermoplastic elastomer, to a process for their |
| 5731365 |
Hydrophilic, highly swellable hydrogels |
March 24, 1998 |
| The present invention relates to hydrophilic, highly swellable hydrogels which are coated with non-reactive, water-insoluble film-forming polymers. |
| 5728886 |
Compounds of the phosphine group, their preparation and their use |
March 17, 1998 |
| Phosphines of the formula (I) and the preparation of these phosphines ##STR1## where Ar--Ar is a biphenyl radical, a 1-phenylnaphthyl radical or a 1,1'-binaphthyl radical, the CH.sub.2 group and the CH.sub.3 radical are each in the ortho position to the Ar--Ar bond, R is F, an alkyl |
| 5710330 |
Process for preparing alkanephosphonic anhydrides |
January 20, 1998 |
| Process for preparing alkanephosphonic anhydrides of the formula (I) ##STR1## where R is straight-chain or branched unsubstituted C.sub.1 -C.sub.6 -alkyl and n.gtoreq.3, which comprises pyrolytically eliminating water from an alkanephosphonic acid of the formula (II) or a pyroalk |
| 5698755 |
Process for preparing aromatic olefins using palladacycle catalysis |
December 16, 1997 |
| The invention relates to a process for preparing monofunctional, bifunctional or polyfunctional aromatic olefins of the formula (I) ##STR1## by reaction of haloaromatics of the formula (II) ##STR2## with olefins of the formula (III) ##STR3## , wherein a palladium compound |
| 5693842 |
Process for preparing phosphorus-containing dicarboxylic acids alkyl esters thereof |
December 2, 1997 |
| The invention relates to a process for preparing phosphorus-containing compounds of the formula I ##STR1## in which R.sup.1 and R.sup.2 are an alkyl radical having 1 to 8 carbon atoms, a cyclohexyl radical, a cyclopentyl radical, an aryl radical or a halogen-, alkyl- or alkoxy-su |
| 5661096 |
Catalysts and cocatalysts for the preparation of polyolefins |
August 26, 1997 |
| In the case of Ziegler catalysts based on a metallocene as the transition metal component and an aluminoxane as the activator, preactivation of the metallocene with the aluminoxane results in a considerable increase in the activity of the catalyst system. Furthermore, 1-olefin polymers o |
| 5650537 |
Process for the preparation of N-acyl-.alpha.-amino acid derivatives |
July 22, 1997 |
| A process for the preparation of N-acylglycine derivatives of the formula (I) ##STR1## which comprises reacting a carboxylic acid amide with an aldehyde in the presence of a solvent and an acid to give an acylaminomethylol and then carbonylating the acylaminomethylol in the prese |
| 5648547 |
Bis-phosphepines and processses for their preparation |
July 15, 1997 |
| The invention relates to bis-phosphepines of the formula (I): ##STR1## where: Ar--Ar is biphenyl, 1,1'-binaphthyl or 1-phenylnaphthyl,R.sup.1 independently of one another are F, (C.sub.1 -C.sub.8)-alkyl or (C.sub.1 -C.sub.8)-alkoxy,m is 0, 1, 2, 3 or 4,R.sup.2 and R.sup.3 independently o |
| 5646234 |
Production of fibers or films using specific forming solutions and the fibers of films obtainabl |
July 8, 1997 |
| A process for producing fibers or films by the steps of:a) preparing an aromatic polyamide by polycondensation of dicarbonyl dihalides or mixtures thereof with at least two diamines in N-alkyllactams as a solvent, the polycondensation being of at least 90 mol %, based on the total amount |
| 5634949 |
Prevention of fabric hand harshening on printing of dyeing cellulosic textiles |
June 3, 1997 |
| Cellulosic textiles are printed or dyed with multiple hook reactive dyes without fabric hand harshening on using a reactive dye preparation containing 0.5 to 10% by weight of a surfactant and 0 to 10% by weight of an antifoaming agent. |
| 5631403 |
Process for the preparation of hydroxycarboxanilides |
May 20, 1997 |
| The present invention relates to a process for the preparation of hydroxycarboxanilides of the formula (1) ##STR1## in which R.sup.1 and R.sup.2 are identical or different and are hydrogen, halogen, a nitro group, a cyano group, a straight-chain or branched alkyl, alkenyl, alkyny |
| 5616683 |
Process for maintaining of improving the mechanical properties of fibers of aromatic copolyamide |
April 1, 1997 |
| A process for maintaining or increasing the tensile strength of fibers of aromatic copolyamides which are formed from a major portion of para-monomers and are soluble in organic aprotic and polar solvents. The process involves storing the fibers in alkaline media after production by |
| 5591893 |
Process for the preparation of polycarboxylic acids and derivatives thereof |
January 7, 1997 |
| The invention relates to a process for the preparation of polycarboxylic acids and derivatives thereof, the polycarboxylic acids prepared containing at least three carboxyl groups, comprising the steps(A) introducing one or more organic compounds, which contain nonaromatic carbon-carbon |
| 5591888 |
Process for producing tert.-butyl chloroacetate |
January 7, 1997 |
| To produce tert-butyl chloroacetate by addition of chloroacetic acid to isobutene, the reaction is carried out in the absence of catalysts and solvents in a pressure vessel at a temperature of 80.degree. to 110.degree. C. under the pressure which establishes itself of 3 to 12 bar ove |
| 5591877 |
Process for the recovery of fluorinated carboxylic acids |
January 7, 1997 |
| Fluorinated carboxylic acids can be recovered from materials which contain them by releasing, if necessary, the carboxylic acids with sufficiently strong acids, esterifying the released acids and distilling off the esters. The esters can be advantageously directly hydrolyzed with aqueous |
| 5575821 |
Process for the preparation of a modified fiber material and process for the dyeing of the modif |
November 19, 1996 |
| A process for the dyeing of fiber materials with water-soluble anionic dyes, in particular those having a fiber-reactive group, is described, according to which dyeing is carried out using low-electrolyte or entirely electrolyte-free and/or low-alkali or entirely alkali-free dye solution |
| 5563016 |
Diallylammonium compounds, processes for their preparation and their use |
October 8, 1996 |
| Ionic monomeric diallylammonium compounds having a targeted combination of diallylammonium cations with selected anions have particularly high and constant charge control properties and very good heat stabilities and dispersibilities.The compounds according to the invention are outstandi |
| 5520860 |
Process for preparing granular sodium silicates |
May 28, 1996 |
| To prepare a compacted, granular sodium silicate having an SiO.sub.2 /Na.sub.2 O molar ratio of 1.7:1 to 4.1:1, sodium silicate having a median particle diameter of <500 .mu.m is first mixed with a material increasing its hardness before being converted into pressed granules having pa |
| 5510377 |
Sterilant gas mixture comprising alkylene oxide and 1,1,1,2,3,3,3-heptafluoropropane |
April 23, 1996 |
| A sterilant gas mixture is presented for cold-gas sterilization, which comprises alkene oxide and 1,1,1,2,3,3,3-heptafluoropropane.The sterilant gas mixture comprises from 12 to 22 mol % of ethylene oxide or propylene oxide and from 78 to 88 mol % of 1,1,1,2,3,3,3-heptafluoropropane. |
| 5507972 |
Process for the preparation of a mixture of sodium silicates and other salts and the use of the |
April 16, 1996 |
| To prepare a mixture of sodium silicates having lamellar structure and sodium carbonate peroxohydrate, sodium silicate composed essentially of .delta.-Na.sub.2 Si.sub.2 O.sub.5 is reacted at least partially with carbon dioxide and atomized water with continuous circulation with the f |
| 5492563 |
Fine division in the preparation of copper phthalocyanine pigments |
February 20, 1996 |
| Copper phthalocyanine pigments are finely divided in an ecologically and economically advantageous manner by first of all subjecting crude, coarsely crystalline copper phthalocyanine pigments to dry milling and then wet milling the finely divided prepigments which are obtained in the |
| 5476976 |
Process for preparing fluoronitrobenzenes |
December 19, 1995 |
| Fluoronitrobenzenes are prepared in an advantageous way from the corresponding chloronitrobenzenes and an alkali metal fluoride by means of a chlorine-fluorine exchange reaction with replacement of a chlorine atom by a fluorine atom, by catalyzing the reaction with a quaternaryammonium |
| 5476963 |
Supported catalyst, process for its preparation and its use for the preparation of vinyl acetate |
December 19, 1995 |
| Supported catalyst, process for its preparation and its use for the preparation of vinyl acetateThe invention relates to improved Pd/K/Au, Pd/K/Ba and Pd/K/Cd supported catalysts, their preparation and their use for the preparation of vinyl acetate from ethylene, acetic acid and oxygen i |
| 5475169 |
Process for the removal of olefinic impurities from 1,1,1,2,3,3,3-heptafluoropropane |
December 12, 1995 |
| Process for the removal of olefinic impurities from 1,1,1,2,3,3,3-heptafluoropropaneThe invention relates to a process for the removal of olefinic impurities from 1,1,1,2,3,3,3-heptafluoropropane (R 227) in which the contaminated R 227 is brought into contact with an alcohol and a base, |
| 5475060 |
Cycloolefin block copolymers and a process for their preparation |
December 12, 1995 |
| Cycloolefin block copolymers and a process for their preparation Cycloolefin block copolymers, which in particular are suitable as phase promoters, are preferably obtained by copolymerization of polycyclic olefins, such as norbornene, with acyclic olefins, such as ethylene, by, at a |
| 5474658 |
Electrochemical process for preparing glyoxylic acid |
December 12, 1995 |
| The present invention describes a process for preparing glyoxylic acid by electrochemical reduction of oxalic acid in aqueous solution in divided or undivided electrolytic cells, wherein the cathode comprises carbon or at least 50% by weight of at least one of the metals Cu, Ti, Zr, V, N |
| 5455366 |
Metallocenes having benzo-fused indenyl derivatives as ligands, processes for their preparation |
October 3, 1995 |
| Metallocenes having benzo-fused indenyl derivatives as ligands, processes for their preparation and their use as catalysts A very effective catalyst system for olefin polymerization comprises a cocatalyst, preferably an aluminoxane, and a metallocene of the formula I ##STR1## in |
| 5455365 |
Process for the preparation of an olefin polymer using metallocenes containing specifically subs |
October 3, 1995 |
| Process for the preparation of an olefin polymer using metallocenes containing specifically substituted indenyl ligandsA highly effective catalyst system for the polymerization of olefins comprises a cocatalyst, preferably an aluminoxane, and a metallocene of the formula I ##STR1## |
| 5451699 |
Process for the preparation of crystalline, salt-free, chlorine-substituted 3-nitrobenzenesulfon |
September 19, 1995 |
| The present invention relates to a process for the preparation of crystalline, salt-free, chlorine-substituted 3-nitrobenzenesulfonic acid hydrates from sulfonation mixtures containing chlorine-substituted 3-nitrobenzenesulfonic acid, in which the sulfonation mixture is mixed with fr |
| 5446201 |
Di(3-(2-chloroethylsulfonyl)-1-propyl)amine hydrochloride and a process for its preparation |
August 29, 1995 |
| Process for preparing di(3-(2-chloroethylsulfonyl)-1-propyl)amine hydrochloride, byreacting 1 mol of an N,N-diallylcarboxamide of the formula (1)in which R is hydrogen, alkyl(C.sub.1 -C.sub.6) or cycloalkyl(C.sub.4 -C.sub.8) with about 4 to about 8 mol of mercaptoethanol at temperatures |
| 5442048 |
Process for the preparation of activated chitosans and their use in the preparation of chiotsan |
August 15, 1995 |
| The invention relates to a process for the preparation of activated chitosans, in which process a chitosan is reacted with an acid for salt formation, preferably followed by a reaction with a base. The addition of acid and the addition of bases which is preferably to be effected in the |
| 5440060 |
Surface-active compounds based on alkoxylated fatty amines |
August 8, 1995 |
| The demands on the properties of pigments, in particular in the areas of emulsion paints and printing inks, which are continuously becoming more specific made it necessary to develop selective and environmentally safe dispersing and emulsifying agents and coupling auxiliaries.The compoun |
| 5438147 |
Imidocarboxylic acid activators and sulfimidocarboxylic acid activators, processes for their pre |
August 1, 1995 |
| A persalt activator or salt thereof which is derived from an imidocarboyxlic acid or sulimidocarboxylic acid of the formula I: ##STR1## in which A is a group of the formula ##STR2## n is the number 0, 1 or 2, R.sup.1 is hydrogen, chlorine, bromine, C.sub.1 -C.sub.20 -alkyl, C |
| 5436370 |
Process for the preparation of 3-nitrobenzenesulfonyl chloride |
July 25, 1995 |
| In a method for preparing 3-nitrobenzene sulphonic acid chloride from nitrobenzene and chlorosulphonic acid, nitrobenzene is reacted with chlorosulphonic acid at approximately 90.degree. to approximately 120.degree. C. and an inorganic acid chloride is then allowed to act on the resu |
| 5434237 |
Ester compounds, process for their preparation and their use |
July 18, 1995 |
| Specific ester products obtainable by esterifying a selected polyethylene glycol with a dicarboxylic acid in a molar ratio of 1:0.25 to 1 are described. The novel ester compounds are efficient and easily biodegradable spin finishes. |
| 5432255 |
Preparation of fiber-forming meta-aramids |
July 11, 1995 |
| A process is described for preparing directly spinnable polymer solutions containing as fiber-forming substance polymers containing at least 95 mol %, based on the polymer, of the recurring structural unit of the formula Iand up to 5 mol % of structural units as formed in the conversion/reac |
| 5432215 |
Building material products containing organic polymers as thickeners |
July 11, 1995 |
| Building material products, such as, for example, jointing compounds, adhesives, emulsion paints, synthetic plasters, fillers and the like, comprising a mixture ofa) at least 10% by weight, in particular 10 to 99% by weight, of a water-soluble natural polymer and derivatives thereof,b) 1 |
| 5430147 |
Water-soluble anthraquinone compounds, preparation thereof, and use thereof as dyes |
July 4, 1995 |
| Water-soluble anthraquinone compounds, preparation thereof, and use thereof as dyes.There are described anthraquinone compounds conforming to the formula (1) ##STR1## where A is the radical of a sulfo-containing anthraquinone radical,R.sup.1 and R.sup.2 are each independently of the othe |
