Patents Assigned to Th. Goldschmidt AG
  • Patent number: 5521273
    Abstract: A water vapor-permeable, waterproof adhesive polymer and a linear polyurethane-urea polymer, either alone or in combination with one another, are utilized to coat various textile materials. The compositions of these polymers as well as various methods of coating the textile materials are described.
    Type: Grant
    Filed: April 4, 1995
    Date of Patent: May 28, 1996
    Assignee: Th. Goldschmidt AG
    Inventors: Iskender Yilgor, Emel O. Yilgor
  • Patent number: 5502175
    Abstract: Fatty acid esters of methylglucoside derivatives of formula I ##STR1## wherein A, B, C, D=21 to 75, R.sub.1, R.sub.2, R.sub.3, R.sub.4 =H or ##STR2## with R.sub.1 -R.sub.4 not simultaneously being H, and M=C.sub.11 -C.sub.18 alkenyl or alkyl.
    Type: Grant
    Filed: April 21, 1994
    Date of Patent: March 26, 1996
    Assignee: Th. Goldschmidt AG
    Inventors: Natvarlei Desai, Klaus Wisotzki
  • Patent number: 5494979
    Abstract: An abhesive coating composition is based on an organopolysiloxane having radiation-curing (meth)acrylate ester groups, which contains an additive that affects the degree of abhesiveness, the additive being obtained by the reaction of an MQ resin with a polysiloxane containing (meth)acrylate ester groups.
    Type: Grant
    Filed: December 19, 1994
    Date of Patent: February 27, 1996
    Assignee: Th. Goldschmidt AG
    Inventors: Thomas Ebbrecht, Peter Lersch, Dietmar Wewers
  • Patent number: 5491245
    Abstract: A method for the synthesis of amphoteric surfactants by the reaction of amines with chloroacetic acid or its salts in aqueous solution at an elevated temperature, consists of reacting compounds of the general formula ##STR1## with chloroacetic acid at temperatures ranging from 115.degree. to 180.degree. C., until the chloroacetic acid content is less than 10 ppm.
    Type: Grant
    Filed: March 15, 1994
    Date of Patent: February 13, 1996
    Assignee: Th. Goldschmidt AG
    Inventors: Burghard Gruning, Christian Weitemeyer
  • Patent number: 5486634
    Abstract: A method for the synthesis of organopolysiloxanes having ##STR1## group, wherein R.sup.1 is an alkyl group with 1 to 4 carbon atoms, is described. The products are obtained by the hydrosilylation of compounds of the formula ##STR2## with hydrogensiloxanes, the addition taking place exclusively in the form of a .gamma. addition.
    Type: Grant
    Filed: December 22, 1994
    Date of Patent: January 23, 1996
    Assignee: Th. Goldschmidt AG
    Inventors: Gunter Hahn, Klaus-Dieter Klein, Dietmar Schafer
  • Patent number: 5484851
    Abstract: A mixed block copolymer of the A-B type is prepared. The A block of the block copolymer is formed by the polymerization of compounds having vinyl groups and the B block of which is a polyoxyalkylene block, obtainable by polymerizing, first of all, monomers having vinyl groups at temperatures of 60.degree. to 150.degree. C. by a free radical mechanism in the presence of sufficient amounts of an initiator and an amount, which corresponds to the desired chain length, of a chain-length regulator, which carries, aside from a mercapto group, a further functional group having at least one active hydrogen and adding alkylene oxide, optionally in the presence of a known addition reaction catalyst, in an addition reaction at 20.degree. to 180.degree. C. onto the polymer so modified, until the desired molecular weight of block B is reached.
    Type: Grant
    Filed: December 22, 1993
    Date of Patent: January 16, 1996
    Assignee: Th. Goldschmidt AG
    Inventor: Jurgen Fock
  • Patent number: 5482572
    Abstract: A method for the preparation of alloys of the SE.sub.2 Fe.sub.17-x TM.sub.xN.sub.y type where SE stands for a rare earth metal, including Y or a mixture of these metals, while TM stands for Co, Ni, Cu, Zr, Ga, Hf, Ta, Nb, Ti, Si, A1, V, Mo, Cr, Zn or Sn or a mixture of these metals, x=0 to 10, y=>0 to 5 is described. The preparation involves calciothermal reduction of a finely divided, homogeneous mixture of the alloying components, subsequent diffusion of the components, followed by nitriding and separating the calcium oxide and excess calcium formed. The method is characterized by:a) Preparation of an alloy of the SE.sub.2 Fe.sub.17-x TM.sub.x bya1) Adjusting the exothermic reaction of the calciothermal reduction by the oxide content of the reaction mixture, so that T.sub.M >TR .gtoreq.0.9 T.sub.M where T.sub.M is the melting temperature of the intermetallic phase, and T.sub.
    Type: Grant
    Filed: October 21, 1993
    Date of Patent: January 9, 1996
    Assignee: Th. Goldschmidt AG
    Inventors: Horst Eggert, Michael Steinhorst
  • Patent number: 5480916
    Abstract: High resilience polyurethane foams are produced by reacting a mixture of highly reactive polyols having a weight average molecular weight between about 4800 and 6500 g/mole and containing at least 70% primary hydroxyl groups and optionally fillers, polyfunctional isocyanates, amine activators, cross-linking agents, tin catalysts, blowing agents and stabilizers. The inventive stabilizers can be used universally in high resilience slabstock foam systems as well as in high resilience molded foam systems and in formulations based on pure TDI, TDI/MDI mixtures as well as on pure MDI in combination with appropriate polyols.
    Type: Grant
    Filed: April 28, 1995
    Date of Patent: January 2, 1996
    Assignee: Th. Goldschmidt AG
    Inventors: Anette Brune-Fischer, Georg Burkhart, Bernd-Jurgen Klietsch, Volker Zellmer
  • Patent number: 5475127
    Abstract: The invention relates to novel organosilyl and organosiloxanyl derivatives of glycerin ethers of the general formula ##STR1## wherein R represents --OH or the --OCH.sub.2 --CH.dbd.CH--(CH.sub.2).sub.3 --CH.dbd.CH.sub.2 group or the --(R.sup.5).sub.a --R.sup.6 group or the --OCH.sub.2 --CH.dbd.CH--(CH.sub.2).sub.5 --R.sub.4 group.
    Type: Grant
    Filed: April 3, 1995
    Date of Patent: December 12, 1995
    Assignee: Th. Goldschmidt AG
    Inventors: Klaus-Dieter Klein, Wilfried Knott
  • Patent number: 5470992
    Abstract: A method for the synthesis of betaines of the general formula ##STR1## by quaternizing the fatty acid amide dialkylamines of the general formula ##STR2## with .omega.-halogenalkylcarboxylic acids of the formula X-(CH.sub.2).sub.y COOH, wherein X is a halogen group, or their salts in aqueous solution, the reaction being carried out within a temperature range of 115.degree. to 180.degree. C., until organically bound chlorine can no longer be detected, the fatty acid amide dialkylamine optionally being quaternized partially or completely in a first step at 80.degree. to 100.degree. C.
    Type: Grant
    Filed: March 14, 1994
    Date of Patent: November 28, 1995
    Assignee: Th. Goldschmidt AG
    Inventors: Burghard Gruning, Willi Foitzik, Christian Weitemeyer, Hans-Dieter Kaseborn
  • Patent number: 5461122
    Abstract: A water vapor-permeable, waterproof linear polyurethane-urea polymer consisting of at least four soft segments: polytetramethylene oxide, polyethyleneoxide and polycaprolactone-polydimethylsiloxane-polycaprolactone. The soft segments are linked together with a diisocyanate and chain extended with a diamine. The polymer is utilized to coat various textile materials. The compositions of the polymer as well as various methods of coating the textile materials are described.
    Type: Grant
    Filed: September 15, 1994
    Date of Patent: October 24, 1995
    Assignee: Th. Goldschmidt AG
    Inventors: Iskender Yilgor, Emel O. Yilgor
  • Patent number: 5456943
    Abstract: A method is described for the preparation of electrically conductive, infrared-reflecting layers on glass, glass-ceramic or enamel surfaces by spraying and thermally decomposing liquid Sn(IV) compounds and fluorine compounds as preparations containing doping agents on to the surface heated to 400.degree. to 800.degree. C., yet below their softening point, wherein, as liquid preparations, ionically stabilized, organic tin(IV) acid sols are used, which contain aliphatic alcohols or ketones with, in each case, at most 6 carbon atoms in the molecule or esters with a boiling point below 180.degree. C. as liquid, organic medium, as well as fluoride ions in an adequate amount for doping. The preparations are homogenous, stable for a long time, and can readily be diluted with alcohols, ketones, and other polar solvents.
    Type: Grant
    Filed: September 2, 1994
    Date of Patent: October 10, 1995
    Assignee: Th. Goldschmidt AG
    Inventors: Dieter Guhl, Sven-Uwe Vallerien
  • Patent number: 5455367
    Abstract: A method for the synthesis of silanes or organosilicon hydrides by the reduction of the corresponding silicon halides or organosilicon halides with a magnesium hydride in a liquid reaction medium is carried out by utilizing the following distinguishing features:a) the use of non-pyrophoric, preferably autocatalytically produced, storage magnesium hydride as magnesium hydride,b) the use of conventional ethers as reaction medium, andc) the continuous removal of the magnesium halide formed being deposited on the surface of the magnesium hydride particles during the reaction by the action of mechanical energy or ultrasound so as to form a fresh surface.
    Type: Grant
    Filed: April 19, 1994
    Date of Patent: October 3, 1995
    Assignee: Th. Goldschmidt AG
    Inventors: Klaus-Dieter Klein, Wilfried Knott, Gotz Koerner
  • Patent number: 5447981
    Abstract: A poly(meth) acrylic acid dispersion with an organic solvent as outer phase, the dispersed phase particles having a low polydispersity is obtained by the free radical polymerization of (meth) acrylic acid and optionally co-monomers, which bring about a cross-linking of the poly(meth) acrylic acid, in a nonpolar, organic solvent in the presence of stabilizers, costabilizers, and initiators. The stabilizer is a block copolymer.
    Type: Grant
    Filed: April 8, 1994
    Date of Patent: September 5, 1995
    Assignee: Th. Goldschmidt AG
    Inventors: Jurgen Fock, Gotz Koerner, Karl-Heinz Reichert, Stephan Fengler, Roland Smolin
  • Patent number: 5430167
    Abstract: Silanes of the general formula ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 in the molecule are the same or different and represent aliphatic hydrocarbon groups,R.sup.4 is a divalent hydrocarbon group with 3 to 14 carbon atoms,R.sup.5 is a group having the formula --O(CH.sub.2).sub.b -- or a polyether group having the formula --(OC.sub.n H.sub.2n).sub.c --, whereinb has a value of 1 to 6,n has an average value of 2 to 2.5c has a value of 1 to 10, anda is 0 or 1, which fulfill the condition that they lower the surface tension of a 1% by weight aqueous solution to a value of .ltoreq.25 mN/m at 25.degree. C., measured with a Du Nooy tensiometer. The silanes are biologically degradable, resistant to hydrolysis and have pronounced surface active properties.
    Type: Grant
    Filed: June 24, 1994
    Date of Patent: July 4, 1995
    Assignee: Th. Goldschmidt AG
    Inventors: Klaus-Dieter Klein, Wilfried Knott, Gotz Koerner
  • Patent number: 5430166
    Abstract: Silanes of the general formula ##STR1## are prepared wherein R.sup.1, R.sup.2 and R.sup.3 in the molecule are the same or different and represent aliphatic hydrocarbon groups,R.sup.4 is a divalent hydrocarbon group with 3 to 14 carbon atoms,R.sup.5 is a group having the formula --O(CH.sub.2).sub.b -- or a polyether group having the formula --(OC.sub.n H.sub.2n).sub.c --, wherein b has a value of 1 to 6, n has an average value of 2 to 2.5 and c has a value of 1 to 10,R.sup.6 is an --OSO.sub.3 X group or an --OR.sup.7 group, wherein X is a hydrogen, an alkali or an optionally substituted ammonium ion and R.sup.7 is an alkyl group with 1 to 4 carbon atoms or an acetyl group,a is 0 or 1,with the proviso that, when R.sup.6 represents the --OR.sup.7 group, a=1. The silanes are biologically degradable, resistant to hydrolysis and have pronounced surfactant properties.
    Type: Grant
    Filed: June 24, 1994
    Date of Patent: July 4, 1995
    Assignee: Th. Goldschmidt AG
    Inventors: Klaus-Dieter Klein, Wilfried Knott, Gotz Koerner
  • Patent number: 5426202
    Abstract: The invention relates to compounds of the general formula SnR.sup.1.sub.a R.sup.2.sub.b R.sup.3.sub.c, in which R.sup.1 is an alkyl group with 1 to 4 carbon atoms, R.sup.2 is an acetate group, R.sup.3 is a trifluoroacetate group, a has a value of 1 or 2, b has a value of 1 or 2 and c has a value of 1 or 2, with the proviso that the sum of a+b+c=4. The invention also relates to a method for the synthesis of these compounds and to a material for producing electrically conductive and infrared-reflective fluorine-doped tin oxide layers on glass, glass ceramic and/or enamel surfaces, the material containing tin compounds of the formula SnR.sup.1.sub.a R.sup.2.sub.b R.sup.3.sub.c or mixtures of these tin compounds, the mixture corresponding to the general formula SnR.sup.1.sub.x R.sup.2.sub.y R.sup.3.sub.z, wherein x has a numerical value of 1 to 2, y a numerical value of 0.1 to 2.9 and z a numerical value of 0.1 to 2.9, the sum of x+y+z being 4, dissolved in a polar organic solvent.
    Type: Grant
    Filed: July 8, 1994
    Date of Patent: June 20, 1995
    Assignee: Th. Goldschmidt AG
    Inventor: Sven-Uwe Vallerien
  • Patent number: 5418311
    Abstract: Polymers, which have polyurethane and/or polyurea groups and contain finely divided fillers, are synthesized by reacting compounds, which contain at least two hydroxyl and/or amino groups, with at least difunctional isocyanates, optionally in the presence of catalysts, and mixing with suitable fillers. The compounds, containing hydroxyl and/or amino groups, and the isocyanates, are separately mixed intimately with finely divided solids so that flowable powders are obtained. The powders obtained are mixed in a stoichiometrically required amount, and the powder mixture is subjected to the action of shear forces at, if necessary, a higher temperature. The mixture of solids obtained has a shelf life of several days or weeks without reaction between the reactive compounds contained therein.
    Type: Grant
    Filed: May 9, 1994
    Date of Patent: May 23, 1995
    Assignee: Th. Goldschmidt AG
    Inventors: Werner Schafer, Manfred Scheiba, Heribert Seyffert
  • Patent number: 5401871
    Abstract: Organopolysiloxane polyethers with increased resistance to hydrolysis are prepared. Furthermore, a method of rendering an aqueous system hydrolysis-resistant and exhibiting increased wetting property utilizing such polysiloxane polyethers as wetting agents in aqueous systems is described. Aqueous coating systems containing such polyethers exhibit increased wetting property and are resistant to alkaline and acidic hydrolysis.
    Type: Grant
    Filed: February 24, 1994
    Date of Patent: March 28, 1995
    Assignee: Th. Goldschmidt AG
    Inventors: Georg Feldmann-Krane, Werner Hohner, Dietmar Schaefer, Stefan Silber
  • Patent number: 5391321
    Abstract: A liquid or pasty, storage-stable, multiple emulsion of the O.sup.1 /W/O.sup.2 type, in which O.sup.2 forms an outer phase of the multiple emulsion, a hydrophilic emulsifier being present at the O.sup.1 /W interface and a hydrophobic emulsifier being present at the W/O.sup.2 interface, is prepared where(1) the hydrophobic emulsifier has an HLB value of at most 8 anda.sub.1) a polyacrylate ester with long-chain hydrocarbon and polyoxyalkylene groups, ora.sub.2) a polyoxyalkylenepolysiloxane with long-chain alkyl groups linked to silicon atoms, and(2) the hydrophilic emulsifier is a nonionic emulsifier with an HLB value of more than 8.
    Type: Grant
    Filed: February 24, 1993
    Date of Patent: February 21, 1995
    Assignee: Th. Goldschmidt AG
    Inventors: Burghard Gruning, Peter Hameyer, Christian Weitemeyer