Patents Assigned to BASF
  • Adhesive based on anionically polymerized styrene/butadiene copolymers
    Patent number: 5585442
    Abstract: An adhesive containing an anionically polymerized copolymer based ona) from 10 to 90 wt % of vinyl aromatics,b) from 10 to 90 wt % of a conjugated diene, andc) from 0 to 30 wt % of other monomersand having a number-average molecular weight M.sub.n of from 2,000 to 250,000 and optionally having a content of homopolymer blocks having a gram-molecular weight which is greater than one twentieth of the number-average molecular weight, said content being less than 40 wt %, based on the copolymer.
    Type: Grant
    Filed: April 28, 1995
    Date of Patent: December 17, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Konrad Knoll, Gerhard Schumacher, Uwe Dittrich
  • Multimetal oxide compositions
    Patent number: 5583084
    Abstract: Multimetal oxide compositions having a two-phase structure and comprising molybdenum, hydrogen, one or more of the elements phosphorus, arsenic, boron, germanium and silicon, and their use for the preparation of methacrylic acid by gas-phase catalytic oxidation.
    Type: Grant
    Filed: February 15, 1995
    Date of Patent: December 10, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Friedrich-Georg Martin, Hans-Peter Neumann, Hartmut Hibst
  • Cesium containing multimetal oxide catalyst compositions for the preparation of methacrolein by gas-phase-catalytic oxidation
    Patent number: 5583086
    Abstract: Cesium based multimetal oxide compositions which are suitable as catalysts for the gas-phase-catalytic oxidative preparation of methacrolein from isobutene or tert-butanol or its methyl ether. The catalysts are characterized by increased selectivity for the formation of methacrolein. The catalysts have locally delimited regions of an oxide composition, preferably (Bi.sub.2 W.sub.2 O.sub.9), surrounded by the remaining constituents of the multimetal oxide.
    Type: Grant
    Filed: February 25, 1994
    Date of Patent: December 10, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Andreas Tenten, Hans-Peter Neumann, Herbert Exner
  • Water-emulsifiable polyisocyanates
    Patent number: 5583176
    Abstract: Water-emulsifiable polyisocyanates, containinga) aliphatic, cycloaliphatic or aromatic polyisocyanates andb) reaction products of the abovementioned polyisocyanates with compounds which contain at least one group ##STR1## in short called a sulfo group, and at least one isocyanate-reactive group.
    Type: Grant
    Filed: September 22, 1995
    Date of Patent: December 10, 1996
    Assignee: BASF Aktiengesellschaft
    Inventor: Karl H aberle
  • Reduction of the phosphate content in waste water from the preparation of metal salts of ascorbic acid 2-monophosphate
    Patent number: 5582739
    Abstract: A process for reducing the phosphate content in waste water from the preparation of salts of ascorbic acid 2-monophosphate comprisesA. treating the waste water from the crystallization of the metal salts of ascorbic acid 2-monophosphate with an alkali metal or alkaline earth metal hypochlorite, chlorine or H.sub.2 O.sub.2,andB. precipitating, at a pH of 9-12, the inorganic phosphate which has been produced from organically bound phosphorus and/or was present in the waste water, especially as calcium phosphate.
    Type: Grant
    Filed: September 27, 1993
    Date of Patent: December 10, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Kaiser, Joachim Paust
  • Polyurethane SRIM compositions having internal mold release properties
    Patent number: 5583197
    Abstract: The invention provides polyurethane components and compositions capable of providing internal mold release properties in SRIM applications. The polyol composition of the invention has an isocyanate reactive polyol (A) having a number average molecular weight from 100 to about 10,000 and an effective amount of internal mold release composition (B) having a silicon-containing polymer (a) and an epoxidized ester (b). The invention further provides an SRIM polyurethane composition useful in the preparation of molded polyurethane articles having internal mold release properties, the composition comprising an isocyanate component (I) and the isocyanate reactive polyol composition (component (II)) disclosed above. In another aspect of the invention, the invention provides methods of using the claimed compositions as well as the rigid cellular polyurethane SRIM articles resulting from such processes.
    Type: Grant
    Filed: May 24, 1995
    Date of Patent: December 10, 1996
    Assignee: BASF Corporation
    Inventors: Richard P. Harrison, Bari W. Brown, Richard C. Rossio, Gladys M. Aviles, Edward M. Dexheimer, David Ho
  • Container having at least one viewing window, in particular a tape cassette, and viewing window arrangement therefor
    Patent number: 5581430
    Abstract: A container having a viewing window essentially comprises a housing with a window which can be fastened to it and is designed in one part as a transparent part and in another part as a masking part, in particular in the edge region. The aim is to cover over the fastening points. In addition, the advantage is obtained of using windows with a wide variety of maskings for the same housing, provided that the contours of the cutout and of the outline of housing and window are adapted at least substantially to one another. The plastic container with windows can be used for all packing and archiving purposes, in particular also as a cassette with a recording medium, for example a magnetic tape cassette.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: December 3, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Schoettle, Joachim Eberhard, Gerald-Wolfgang Borck
  • N-aminopyridone dyes
    Patent number: 5580980
    Abstract: Pyridone dyes useful for thermal transfer have the formula ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, Y, X and Z are defined in the specification.
    Type: Grant
    Filed: November 1, 1993
    Date of Patent: December 3, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Karl-Heinz Etzbach, Ernst Schefczik, Ruediger Sens, Matthias Wiesenfeldt
  • Preparation of polyarylene ether ketones
    Patent number: 5580948
    Abstract: For the preparation of polyarylene ether ketones by Friedel-Crafts polycondensation, a reaction mixture consisting ofA. a monomer system,B. a Lewis acid,C. if required, a Lewis base andD. an inert solventis subjected to polycondensation in two reaction zones, discharged from the second reaction zone with plug flow and compounded. The reaction mixture is subjected to polycondensation in the first reaction zone while stirring to a viscosity of about 2,000 mPa.s, is transferred to the second reaction zone and is discharged therefrom by means of an inert solvent or of an inert gas saturated with the solvent, under from about 6 to 65, preferably from 10 to 25, bar, the transport pressure being reduced in at least two stages and the pressure reduction in the first stage being not more than 60%.
    Type: Grant
    Filed: August 3, 1994
    Date of Patent: December 3, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Eckhard Neufeld, Barbel Arnold-Mauer, Jurgen Hofmann, Thomas Heitz, Christoph Sachsenweger, Petra Wieland
  • Preparation of tetrahydropyran-4-carboxylic acid and its esters
    Patent number: 5580994
    Abstract: A process for preparing tetrahydropyran-4-carboxylic acid and its esters of the formula I ##STR1## (R=H, C.sub.1 -C.sub.8 -alkyl, C.sub.3 -C.sub.8 -cycloalkyl, aryl, C.sub.7 -C.sub.12 -alkylphenyl and C.sub.7 -C.sub.12 -phenylalkyl) by reacting 2,7-dioxaspiro[4.4]nonane-1,6-dione II ##STR2## with water or alcohols IIIR--OH (III),in the presence of acidic catalysts at from 150.degree. to 350.degree. C. and from 0.01 to 100 bar.
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: December 3, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Rolf Fischer, Werner Schnurr, Norbert Goetz, Thomas Kuekenhoehner
  • Continuous process for expanding thermoplastic minipellets
    Patent number: 5580503
    Abstract: The subject invention pertains to a continuous process for expanding thermoplastic minipellets, particularly polypropylene. The minipellets are continuously expanded by continuously charging and mixing water and minipellets in a slurry tank to form a slurry which is subsequently pressurized. A blowing agent such as butane is entrained into the pressurized slurry flow, which said slurry is then heated by a heating means, such as a shell and tube heat exchanger, to the softening point of the minipellets. The heated minipellets are given the time necessary for impregnation by permitting them to flow through one or more impregnation vessels. The impregnated minipellets are released through an orifice into an expansion vessel where the blowing agent flashes off, thereby expanding the minipellets.
    Type: Grant
    Filed: June 3, 1994
    Date of Patent: December 3, 1996
    Assignee: BASF Corporation
    Inventors: Thomas N. Hall, III, Yogesh C. Trivedi
  • Graft polymers of natural substances containing saccharide structures or derivatives thereof and ethylenically unsaturated compounds and their use
    Patent number: 5578678
    Abstract: Graft polymers are obtainable by free radical polymerization of(A) monomers or monomer mixtures of(a) from 10 to 100% by weight of open-chain N-vinylcarboxamides(b) from 0 to 90% by weight of other, carboxyl-free monoethylenically unsaturated monomers which are copolymerizable with the monomers (a) and(c) from 0 to 5% by weight of monomers containing two or more ethylenically unsaturated, non-conjugated double bonds in the molecule,in the presence of(B) natural substances containing saccharide structures, such as mono-, oligo- and polysaccharides,in a weight ratio (A):(B) of from 95:5 to 20:80 and, if required, subsequent hydrolysis of the amido groups of the polymerized monomers (a) of the graft polymer with formation of amino groups, and said polymers are used as dry and wet strength agents for paper, board and cardboard.
    Type: Grant
    Filed: April 19, 1994
    Date of Patent: November 26, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Heinrich Hartmann, Walter Denzinger, Michael Kroener, Claudia Nilz, Friedrich Linhart, Andreas Stange
  • Non-isocyanate basecoat/clearcoat coating compositions which may be ambient cured
    Patent number: 5578675
    Abstract: Improved basecoat--clearcoat paint coating compositions which may be ambient cured are disclosed. The coating compositions comprise:1) a hydroxyl functional coreactant,2) at least one anhydride functional coreactant and,3) a carbodiimide compound.The improved compositions cure at a rate especially useful as refinish paint compositions.
    Type: Grant
    Filed: December 27, 1994
    Date of Patent: November 26, 1996
    Assignee: BASF Corporation
    Inventors: Patrick J. Mormile, Rajnikant P. Shah, Anthony J. Tye
  • Preparation of cellular polyurethanes
    Patent number: 5578653
    Abstract: A process for the production of cellular polyurethanes by reactinga) at least one organic and/or modified organic polyisocyanate,b) at least one relatively high-molecular-weight compound containing at least two reactive hydrogen atoms, if desiredc) low-molecular-weight chain extenders and/or crosslinking agents,in the presence ofd) blowing agents,e) catalysts, and, if desired,f) auxiliaries and/or additives,wherein the blowing agent d) is at least one acetal.
    Type: Grant
    Filed: October 12, 1995
    Date of Patent: November 26, 1996
    Assignee: BASF Schwarzheide
    Inventors: Regina Hendreich, Peter Falke, Dieter Tintelnot, Marion Wenzel
  • Preparation of polyvinylpyridine N-oxides
    Patent number: 5578684
    Abstract: Polyvinylpyridine N-oxides are prepared by oxidizing polyvinyl-pyridines with aqueous solutions of hydrogen peroxide in the presence of acids and oxides or acids of elements of Groups 5b, 6b, 7b and 8 of the Periodic Table or of salts of these acids as catalyst, it also being possible for the oxidation to take place in the absence of the catalysts when from 40 to 80% strength aqueous solutions of at least dibasic carboxylic acids or of polymers of monoethylenically unsaturated carboxylic acids are used as solvent.
    Type: Grant
    Filed: August 24, 1995
    Date of Patent: November 26, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Christian Schade, Dieter Boeckh, Juergen Detering
  • Preparation of .alpha.-hydroxyketones
    Patent number: 5576462
    Abstract: A process for the preparation of .alpha.-hydroxyketones of the general formula I ##STR1## in which R.sup.1, R.sup.2, R.sup.3, and R.sup.4 denote hydrogen or C.sub.1 -C.sub.8 alkyl orR.sub.1 and R.sup.3 together form a C.sub.2 -C.sub.10 alkylene chain optionally mono- to tri-substituted by methyl and/or ethyl andR.sup.5 denotes hydrogen, methyl or ethyl,from 2,3-epoxyalcohols of the general formula II ##STR2## in which R.sup.1, R.sup.2, R.sup.3, and R.sup.4 have the above meanings, at temperatures of from -10.degree. to 120.degree. C. and pressures of from 0.01 to 20 bar in the presence of a catalyst, wherein the catalyst used is a hydridocobalt compound, and the preparation of 2,3-epoxyalcohols II from 3-hydroperoxy alkenes III and their preparation from alkenes IV using oxygen or gas mixtures containing oxygen.
    Type: Grant
    Filed: August 3, 1995
    Date of Patent: November 19, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Norbert Rieber, Joaquim H. Teles
  • Multiple layer coating method
    Patent number: 5576063
    Abstract: A method of preparing a multilayer coating is described. The method comprises the steps of:(1) applying onto a substrate a first curable coating composition comprising two components that are reactive with one another to form urethane linkages and a third component that includes one or more epoxy groups,(2) curing the first curable coating composition to form a cured coating,(3) applying a second curable coating composition onto the surface of the coating from step (2), and(4) curing the second curable coating composition.
    Type: Grant
    Filed: April 21, 1995
    Date of Patent: November 19, 1996
    Assignee: BASF Corporation
    Inventors: Rodney L. Briggs, John W. Rehfuss, Walter H. Ohrbom, Gregory G. Menovcik
  • Preparation of 2-substituted but-2-ene-1,4-dial-4-acetals and novel hemiacetals of glyoxal monoacetals
    Patent number: 5576449
    Abstract: The preparation of 2-substituted but-2-ene-1,4-dial-4-acetals of the formula I ##STR1## in which the substituents R.sup.1 to R.sup.4 stand for hydrogen or C.sub.1 -C.sub.6 aliphatic radicals, and R.sup.2 and R.sup.3 or R.sup.1 and R.sup.2 are in each case common members of an aliphatic 4-membered to 7-membered ring, which can contain a hetero atom, and R.sup.
    Type: Grant
    Filed: September 29, 1994
    Date of Patent: November 19, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: J urgen Frank, Johann-Peter Melder, Franz Merger, Tom Witzel
  • Copolymers of hydroxyalkyl vinyl ethers for use in detergents and cleaning agents
    Patent number: 5576407
    Abstract: Copolymers of hydroxyalkyl vinyl ethers are obtainable by cationic or free radical copolymerization of(a) from 99 to 1% by weight of a hydroxyalkyl vinyl ether,(b) from 1 to 99% by weight of an adduct of a C.sub.2 -C.sub.4 -alkylene oxide with a hydroxyalkyl vinyl ether and(c) from 0 to 98% by weight of other copolymerizable monomers,and the stated copolymer and hydroxyalkyl vinyl ethers polymerized by cationic or free radical polymerization, which contain the monomers (a) or (b) as sole monomers or as a mixture with other copolymerizable monomers in the form of polymerized units, are used as additives for detergents and cleaning agents in amounts of from 0.1 to 50% by weight.
    Type: Grant
    Filed: February 10, 1994
    Date of Patent: November 19, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Matthias Kroner, Heinrich Hartmann, Gerhard Wolf, Richard Baur, Paul Diessel, Hans-Ulrich Jaeger, Volker Schwendemann, Johannes Perner
  • Portable tank
    Patent number: D376191
    Type: Grant
    Filed: March 31, 1995
    Date of Patent: December 3, 1996
    Assignee: BASF Corporation
    Inventors: Neil P. Stapensea, Kevin K. Gaskins, Dan J. Proska, Gil Rollison