Abstract: A process for the preparation of novel polyamides, the use of such polyamides for the production of fibers, sheets and moldings, and fibers, sheets and moldings obtainable from such polyamides, are provided.
Type:
Grant
Filed:
December 26, 2002
Date of Patent:
November 2, 2004
Assignee:
BASF Aktiengesellschaft
Inventors:
Paul-Michael Bever, Ulrike Breiner, Bernd-Steffen von Bernstorff, Gerhard Conzelmann
Abstract: Pigment preparations comprising
A) at least one organic or inorganic pigment and
B) at least one ethoxylated and propoxylated and/or butoxylated polyethyleneimine.
Type:
Grant
Filed:
November 25, 2002
Date of Patent:
November 2, 2004
Assignee:
BASF Aktiengesellschaft
Inventors:
Oliver Borzyk, Jürgen Huff, Manfred Mielke, Rüdiger Sens
Abstract: A process for the agglomeration of at least one rubber (A), dispersed in an aqueous phase, by the addition of a dispersion of at least one agglomerating polymer (B) in aqueous phase, in which the agglomerating polymer B used is one containing substantially no free acid groups and the agglomeration is carried out in the presence of at least one basic electrolyte.
Abstract: Metal compounds of the formula I,
where M is selected from among Ni and Pd in the oxidation state +II can be used for the polymerization or copolymerization of olefins. Supported catalysts for the polymerization and copolymerization of olefins can be obtained by application of one or more of the above-described ionic metal compounds to a support.
Type:
Grant
Filed:
January 2, 2003
Date of Patent:
November 2, 2004
Assignee:
BASF Aktiengesellschaft
Inventors:
Marc Oliver Kristen, Peter Hofmann, Frank Eisenträger
Abstract: A catalyst used in a process for preparing maleic anhydride by heterogeneously catalyzed gas-phase oxidation of a hydrocarbon having at least four carbon atoms by means of oxygen-containing gases comprises a catalytically active composition comprising vanadium, phosphorus and oxygen and has a essentially hollow cylindrical structure in which (a) the ratio of the height h to the diameter of the continuous hole d2 is not more than 1.5 and (b) the ratio of the geometric surface area Ageo to the geometric volume Vgeo is at least 2 mm−1.
Type:
Grant
Filed:
September 5, 2002
Date of Patent:
November 2, 2004
Assignee:
BASF Aktiengesellschaft
Inventors:
Jens Weiguny, Sebastian Storck, Andreas Tenten
Abstract: Matt surfaces are obtained when a metal is coated electrolytically with zinc from an electrolyte solution which contains
zinc sulfate or an alkanesulfonate of zinc or mixtures thereof, and optionally further metal salts,
sulfuric acid or an alkanesulfonic acid or a mixture thereof, and
at least one additive selected from nitrogen-containing surface-active compounds, which may be ionic or nonionic, sulfur-containing anionic surface-active compounds, and surface-active compounds based on multifunctional alcohols having at least three hydroxyl groups.
Type:
Grant
Filed:
January 10, 2003
Date of Patent:
November 2, 2004
Assignee:
BASF Aktiengesellschaft
Inventors:
Gregor Brodt, Jens Haas, Werner Hesse, Hans-Ulrich Jäger
Abstract: A process for preparing polyamides comprises polymerizing starting monomers or starting oligomers in the presence of at least one compound of the formula (I)
where
R is a functional group R8 which bears 1-4 identical or different amide-forming groups R7,
R1 is H, C1-C20-alkyl, cycloalkyl, benzyl or OR6, where R6 is H, C1-C20-alkyl, cycloalkyl or benzyl,
R2, R3, R4 and R5 are independently C1-C10-alkyl,
n is a natural number greater than 1, and
the piperidine derivatives attached to R are identical or different with regard to the substituents, meaning R1, R2, R3, R4 and R5.
The polyamides are useful for preparing filaments, fibers, films, sheetlike structures and moldings.
Type:
Grant
Filed:
September 14, 2000
Date of Patent:
November 2, 2004
Assignee:
BASF Aktiengesellschaft
Inventors:
Ulrike Breiner, Manfred Julius, Rainer Neuberg, Robert Weiss, Axel Wilms, Harry Y. Hu
Abstract: In a process for the continuous preparation of polybutylene terephthalate from terephthalic acid and 1,4-butanediol comprising:
a) direct esterification of terephthalic acid with 1,4-butanediol in a reactor cascade comprising at least two reactors,
b) precondensation of the esterification product obtained in stage a), and
c) polycondensation of the precondensate obtained in stage b),
the reaction pressure decreases and the temperature does not increase along the reactor cascade in stage a).
Type:
Grant
Filed:
December 19, 2001
Date of Patent:
November 2, 2004
Assignee:
BASF Aktiengesellschaft
Inventors:
Thomas Heitz, Martin Klatt, Ralf Neuhaus
Abstract: Pigment concentrates comprising at least one pigment, a polyethylene wax prepared from one ethylene and, if desired, one comonomer using a metallocene catalyst, if desired a thermoplastic polymer and, if desired, additives can be used to color plastic moldings and plastic sheets.
Type:
Grant
Filed:
June 5, 2002
Date of Patent:
November 2, 2004
Assignee:
BASF Aktiengesellschaft
Inventors:
Andreas Deckers, Wilhelm Weber, Stefan Weiss, Naria Edlu Keene von Koenig
Abstract: A fiber containing a longitudinal core (I) of a polymer and a chemically different surrounding sheath (II), wherein said sheath (II) is based on a polyamide containing a sterically hindered piperidine derivative (III) attached to the polymer chain by chemical bonding.
Type:
Grant
Filed:
May 21, 2003
Date of Patent:
November 2, 2004
Assignee:
BASF Aktiengesellschaft
Inventors:
Paul-Michael Bever, Gerhard Conzelmann, Bernd-Steffen von Bernstorff
Abstract: A catalyst system for the polymerization of olefins is prepared by initially charging one or more compounds of the formula I a or I b,
subsequently adding a molecularly defined activator of the formulae II a to c
[(L—H)]+[(M′)Q1Q2Q3Q4]− II a
[(CAr3)]+[(M′)Q1Q2Q3Q4]− II b
[(M′)Q1Q2Q3] II c
and finally adding an alkylating agent selected from among LiR11, MgR11R12 and AlR12R13R14.
Abstract: A paper coating slip contains a polymer dispersed with polyvinyl alcohol as protective colloid in water (abbreviated to PVA-dispersed polymer).
Type:
Application
Filed:
May 19, 2004
Publication date:
October 28, 2004
Applicant:
BASF Aktiengesellschaft
Inventors:
Reinhold J. Leyrer, Harutyun Hanciogullari
Abstract: Formaldehyde is removed by distillation from reaction solutions containing a methlolated alkanal which was obtained from the reaction of formaldehyde with an alkanal which has at least one acidic hydrogen atom &agr; to the carbonyl function or from the reaction of a 2-alkylacrolein or acrolein with water and formaldehyde, by a process in which this reaction was carried out in the presence of catalytic amounts of organic amine. The process permits the improved removal of formaldehyde from the reaction mixture and furthermore facilitates the hydrogenation of the alkanals thus obtained to give polyols.
Type:
Grant
Filed:
June 26, 2002
Date of Patent:
October 26, 2004
Assignee:
BASF Aktiengesellschaft
Inventors:
Matthias Dernbach, Detlef Kratz, Achim Stammer, Gerhard Schulz
Abstract: Polymer dispersions comprise at least one copolymer which contains, as polymerized monomers,
a) from 25 to 70% by weight of at least one conjugated aliphatic diene,
b) from 25 to 70% by weight of at least one vinylaromatic monomer,
c) from 2.5 to 15% by weight of at least one monoester of a C2-C10-alkanediol with acrylic acid or methacrylic acid or
c′) from 0.1 to 10% by weight of at least one alkylpolyethylene glycol (meth)acrylate of the formula (I)
where R1 is hydrogen or methyl, R2 is C1-C4-alkyl and n is an integer from 1 to 100, or
c″) from 2 to 15% by weight of a mixture of the monoester c) and the alkylpolyethylene glycol (meth)acrylate c′),
d) from 0 to 1.0% by weight of ethylenically unsaturated monomers which have at least one acid group, or salts thereof,
e) from 0 to 5.0% by weight of ethylenically unsaturated nitriles and
f) from 0 to 1.0% by weight of amides of &agr;,&bgr;-ethylenically unsaturated mono- and dicarboxylic acids.
Type:
Grant
Filed:
March 10, 2003
Date of Patent:
October 26, 2004
Assignee:
BASF Aktiengesellschaft
Inventors:
Markus Koppers, Joachim Pakusch, Hermann Anders, Marco Schmidt, Hans-Jürgen Denu
Abstract: A process for the preparation of polymers is described, wherein at least one first ethylenically unsaturated monomer is subjected to a free radical polymerization in the presence of stable free radicals or sources of stable free radicals and of a compound having at least one free thiol group to give a polymer, and wherein the molar ratio of compound having a free thiol group to stable free radicals is from 0.05 to 1.1. The polymerization rate is substantially increased by the compound having a free thiol group.
Type:
Grant
Filed:
September 27, 2002
Date of Patent:
October 26, 2004
Assignee:
BASF Aktiengesellschaft
Inventors:
David Christie, Sylke Haremza, Susanne Brinkmann-Rengel, Roman Benedikt Raether
Abstract: Thermal separating process between at least one gaseous and at least one liquid stream, of which at least one comprises (meth)acrylic monomers, in a separating column whose separating internals are mass transfer trays, in which the liquid stream is polymerization-inhibited and used for spraying the surface of the separating column, and internal surfaces which are in the shadow region of the spraying are removed from the shadow region by covering.
Abstract: A process for preparing ethylene polymers by the high-pressure method comprises dissolving one or more free-radical initiators in one or more ketones of the formula I 1
Type:
Application
Filed:
May 14, 2004
Publication date:
October 21, 2004
Applicant:
BASF Aktiengesellschaft
Inventors:
Lars Wittkowski, Andreas Deckers, Wilhelm Weber, Thomas Droge, Andrei Gonioukh, Frank-Olaf Mahling
Abstract: In a process for rectificative isolation of (meth)acrylic acid from a mixture containing, as main components, (meth)acrylic acid and an organic liquid having a higher boiling point than (meth)acrylic acid, the rectification is carried out with the addition of a surfactant.
Type:
Grant
Filed:
September 7, 2000
Date of Patent:
October 19, 2004
Assignee:
BASF Aktiengesellschaft
Inventors:
Ulrich Hammon, Holger Herbst, Gerhard Nestler
Abstract: Perylene-3,4:9,10-tetracarboxylic diimides of the general formula I
where
R1, R2, R3 and R4 are independently hydrogen, chlorine, bromine or substituted or unsubstituted aryloxy, arylthio, arylamino, hetaryloxy or hetarylthio;
R5, R6, R7, R8, R9 and R10 are independently hydrogen or long-chain alkyl, alkoxy or alkylthio whose carbon chain may in each case contain up to four double bonds, with the proviso that at least four of these radicals are not hydrogen
are prepared and used as liquid-crystalline materials for electronic, optoelectronic and photonic applications, for coloration of macromolecular organic and of inorganic materials, as fluorescent dyes and as laser dyes and also as organic materials for solar collectors and electroluminescence applications.
Abstract: In multimetal cyanide complexes, more than 30% by weight of the primary particles have a platelet-like habit, i.e. the length and width of the primary particles is at least three times the thickness of the particles.
Type:
Grant
Filed:
May 29, 2003
Date of Patent:
October 19, 2004
Assignee:
BASF Aktiengesellschaft
Inventors:
Georg Heinrich Grosch, Kathrin Harre, Jörg Erbes, Reinhard Lorenz, Stephan Bauer, Thomas Ostrowski, Eva Baum, Dieter Junge