Abstract: Water-soluble copolymers containing copolymerized vinylamine units are prepared by copolymerizing (a) from 95 to 10 mol % of N-vinylformamide and (b) from 5 to 90 mol % of an ethylenically unsaturated monomer from the group consisting of vinyl acetate, vinyl propionate, C.sub.1 -C.sub.4 -alkyl vinyl ethers, the esters, nitriles and amides of acrylic acid and methacrylic acid and N-vinylpyrrolidone, and then eliminating from 30 to 100 mol % of the formyl groups from the copolymer. Preferred copolymers are copolymers of N-vinylformamide and vinyl acetate, in which from 30 to 100 mol % of the monomer units are hydrolyzed. The copolymers are used in papermaking to increase the dry strength and wet strength of the paper.
Type:
Grant
Filed:
April 29, 1988
Date of Patent:
November 14, 1989
Assignee:
BASF Aktiengesellschaft
Inventors:
Sigberg Pfohl, Michael Kroener, Heinrich Hartmann, Walter Denzinger
Abstract: Cyclohexenone derivatives of the formula ##STR1## where R.sup.1 is alkyl, alkenyl, alkynyl, haloalkyl or haloalkenyl, alkoxyalkyl, unsubstituted or substituted cycloalkylmethyl, unsubstituted or substituted benzyl, or is a 5-membered heterocyclic ring which is bonded to the oxygen via a methylene unit,R.sup.2 is alkyl, R.sup.3 is hydrogen, alkylcarbonyl, alkenylcarbonyl, unsubstituted or substituted benzoyl, trialkylsilyl, alkyl- or arylsulfonyl, dialkylphosphono or -thiophosphono, or an organic or inorganic cation,R.sup.4 is unsubstituted or substituted alkyl, alkenyl or alkynyl, or unsubstituted or substituted cycloalkyl, andY is hydrogen, methoxycarbonyl, cyano, alkyl or halogen, and herbicides containing these compounds.
Type:
Grant
Filed:
March 16, 1987
Date of Patent:
November 14, 1989
Assignee:
BASF Aktiengesellschaft
Inventors:
Dieter Kolassa, Michael Keil, Ulrich Schirmer, Hans Theobald, Rainer Becker, Bruno Wuerzer, Norbert Meyer
Abstract: Dyes are transferred from a substrate to an acceptor by sublimation or vaporization of the dye by means of a thermal printing head by using a substrate on which there is situated cationic dyes having a cyanine chromophore and one or more N-H groups which are part of the cyanine chromophore, in their electrically neutral form as the result of deprotonation at the N-H group and transferring these deprotonated dyes to a coated paper.
Type:
Grant
Filed:
December 18, 1987
Date of Patent:
November 14, 1989
Assignee:
BASF Aktiengesellschaft
Inventors:
Johannes P. Dix, Karl-Heinz Etzbach, Udo Mayer, Ruediger Sens
Abstract: An electrophotographic recording element comprising(A) an electrically conducting base and(B) at least one photoconductive layer consisting essentially of(b.sub.1) at least one binder,(b.sub.2) at least one sensitizer which on exposure of layer (B) generates charge carriers and which is selected from the group of the isoindolenine dyes of the general structure I ##STR1## where the index and the variables have specified meanings, (b.sub.3) at least one index and the variables have specified the generated charge carriers and optionally(b.sub.4) additives,is useful for reprographic purposes, for producing printing plates, in particular offset plates, and for producing photoresists.
Abstract: Pentenoic esters are prepared by heating formylvaleric esters at from 50.degree. to 400.degree. C. in the presence of zeolites or one or more phosphates selected from the group consisting of aluminum phosphate, silicon aluminum phosphate, boron aluminum phosphate, silicon iron aluminum phosphate, cerium phosphate, zirconium phosphate, boron phosphate, iron phosphate and strontium phosphate.
Type:
Grant
Filed:
June 10, 1988
Date of Patent:
November 7, 1989
Assignee:
BASF Aktiengesellschaft
Inventors:
Fritz Naeumann, Wolfgang Hoelderich, Franz Merger
Abstract: A plastics mixture which absorbs electromagnetic radiation consists of a heat-stable thermoplastic polymer and from 1 to 90% by weight of a ferrite, titanate or zirconate having a particle size of from 100 to 5,000 .ANG.. The mixture is prepared by combining the metal components in the form of organometallic compounds, mixing them with the thermoplastic, adding the amount of water required for hydrolysis and heating the mixture to about 250.degree. C.
Abstract: Pentenoic esters are prepared by a process in which 4- and/or 3-formylvaleric esters are heated to 50.degree.-400.degree. C. in the presence of a catalyst which contains one or more elements of subgroup VIII of the Periodic Table.
Type:
Grant
Filed:
June 10, 1988
Date of Patent:
November 7, 1989
Assignee:
BASF Aktiengesellschaft
Inventors:
Franz Merger, Juergen Frank, Uwe Vagi, Rolf Fischer
Abstract: Polymers in bead form are prepared from water-soluble ethylenically unsaturated monomers by a reverse suspension polymerization of a liquid in the presence of polymerization initiators and protective colloids obtainable by grafting polymers (A) containing (a) aromatic monovinyl monome from 40 to 100% by weight (b) C.sub.3-6 monoethylenically unsaturated carboxylic acid and/or maleic anhydride from 0 to 60% by weight (c) other monoethylenically unsaturated monomers from 0-20% by weight, as copolymerized units with the proviso that the sum of the weight (a) to (c) is always 100 and the polymer (A) has a molecular weight (number average) from 500 to 20,000 and a hydrogenation iodine number from 1.3 to 51 with a fixed monomer mixture at given concentration levels.
Abstract: A TiO.sub.2 -containing polycaprolactam contains, based on TiO.sub.2, less than 0.1% by weight of 100.degree. C. water solubles and from 2 to 15% by weight of monomeric caprolactam and oligomers thereof, based on polycaprolactam.
Abstract: Wash solutions containing Fe(II) and Fe(III) chelate complexes and used for removing NO.sub.x from waste gases are regenerated by treatment with sodium tetrahydroborate.
Abstract: Thermoplastic molding compositions contain as essential components(A) from 1 to 90% by weight of a polycarbonate,(B) from 1 to 90% by weight of a polyester,(C) from 1 to 90% by weight of a polyamide,(D) from 0.5 to 30% by weight of a polymeric component having hydroxyl groups and in addition(E) from 0 to 30% by weight of an impact-modifying rubber and(F) from 0 to 60% by weight of a fibrous or particulate filler.
Type:
Grant
Filed:
February 16, 1989
Date of Patent:
November 7, 1989
Assignee:
BASF Aktiengesellschaft
Inventors:
Dietrich Lausberg, Erhard Seiler, Hans-Georg Braun
Abstract: Fireproofed thermoplastic molding materials which contain red phosphorus as a flame-proofing agent are obtainable by mixing(A) from 5 to 95% by weight of a polyamide or of a polyester or of a mixture of these,(B) from 5 to 95% by weight of an elastomer dispersion containing, as essential components,(b.sub.1) from 5 to 75% by weight of an elastomer prepared by emulsion polymerization,(b.sub.2) from 10 to 70% by weight of red phosphorus, p2 (b.sub.3) from 10 to 80% by weight of water and(b.sub.4) from 0.1 to 5% by weight of dispersant, and(C) from 0 to 60% by weight of fibrous or particulate fillers or a mixture of these,the total content of red phosphorus in the molding material being from 3 to 20% by weight, based on the total weight of the molding material, and the elastomer composition being introduced into a melt of the polyamide or of the polyester or of a mixture of these.
Type:
Grant
Filed:
April 19, 1988
Date of Patent:
October 31, 1989
Assignee:
BASF Aktiengesellschaft
Inventors:
Christoph Plachetta, Graham E. McKee, Hans-Peter Weiss
Abstract: The invention relates to novel alkoxy substituted maleimides of the formula ##STR1## where R.sup.1 is hydrogen, C.sub.1 -C.sub.8 -alkyl, C.sub.2 -C.sub.8 -alkenyl, phenyl or phenylalkyl, and the organic radicals may furthermore carry inert substituents, and R.sup.2 and R.sup.3 are each C.sub.1 -C.sub.4 -alkyl, C.sub.2 -C.sub.4 -alkenyl, C.sub.1 -C.sub.4 -haloalkyl or C.sub.2 -C.sub.4 -haloalkenyl, and alkoxy-substituted maleic anhydrides of the formula II ##STR2## where R.sup.2 is C.sub.1 -C.sub.4 -alkyl, C.sub.2 -C.sub.4 -alkenyl, C.sub.1 -C.sub.4 -haloalkyl or C.sub.2 -C.sub.4 -haloalkenyl and Z is hydrogen, halogen or a radical OR.sup.3, where R.sup.3 is C.sub.1 -C.sub.4 -alkyl, C.sub.2 -C.sub.4 -alkenyl, C.sub.1 -C.sub.4 -haloalkyl or C.sub.2 -C.sub.4 -haloalkenyl.The invention further relates to processes for preparing such maleimides I and the corresponding maleic anhydrides II and their use as graft monomers in graft polymers based on polyphenylene ethers.
Abstract: 1,1-dialkoxy- or 1,1-(.alpha.,.omega.-methylenedioxy)-non-2-yn-9-ol and their OH-protected derivatives of the general formula I ##STR1## where R.sup.1 and R.sup.2 are each C.sub.1 -C.sub.6 -alkyl or together form an alkylene chain of 2 to 5 carbon atoms and X is hydrogen or a protective group which can be eliminated, their preparation and their use as intermediates.
Type:
Grant
Filed:
August 5, 1988
Date of Patent:
October 31, 1989
Assignee:
BASF Aktiengesellschaft
Inventors:
Rainer Becker, Walter Seufert, Ernst Buschmann, Christiane Bruchner
Abstract: Mixtures crosslinkable by photopolymerization and based on binders, photopolymerizable monomers compatible therewith and photoinitiators, contain as binders copolymers prepared from (a.sub.1) from 30 to 70% by weight of ethylene, (a.sub.2) from 5 to 40% by weight of (meth)acrylic acid and (a.sub.3) from 5 to 50% by weight of one or more vinyl ester, vinyl ether, (meth)acrylic acid ester and/or (meth)acrylamide.
Abstract: A 5-phenyl-1,3,3a,4,5,9b-hexahydro-3H-benz(e)indole compound of the formula I: ##STR1## wherein R.sup.1 is hydrogen or C.sub.1-6 alkyl, R.sup.2 is hydrogen or C.sub.1-3 alkyl in the 3a- or 4-position, R.sup.3 and R.sup.4 are each hydrogen, hydroxyl, halogen, C.sub.1-3 alkyl, C.sub.1-3 alkoxy, C.sub.1-3 alkylthio or trifluoromethyl, acetylamino or amino and R.sup.5 is hydrogen or C.sub.1-3 alkyl, or a salt thereof with a physiologically tolerated acid. The compounds and compositions are useful for treating depression or trating convulsions and which exhibit a sedative and tranquilizing effect when administered to a patient.
Type:
Grant
Filed:
May 23, 1988
Date of Patent:
October 31, 1989
Assignee:
BASF Aktiengesellschaft
Inventors:
Gerd Steiner, Walter Himmele, Ernst Buschmann, Hans-Juergen Teschendorf, Harald Weifenbach
Abstract: 3,4-dihydro-2H-pyrans of the formula I ##STR1## where R.sup.1 is C.sub.4 -C.sub.20 -alkyl, C.sub.4 -C.sub.20 -alkoxyalkyl, aryl or C.sub.7 -C.sub.20 -arylalkyl, or is aryl or C.sub.7 -C.sub.20 -arylalkyl which bears from one to three substituents selected from the group consisting of halogen, C.sub.1 -C.sub.8 -alkyl, C.sub.1 -C.sub.8 -haloalkyl, C.sub.1 -C.sub.8 -alkoxy or C.sub.1 -C.sub.8 -haloalkoxy, R.sup.2 is hydrogen or C.sub.1 -C.sub.4 -alkyl, R.sup.3 is aryl, or aryl bearing from one to three substituents selected from the group consisting of halogen, C.sub.1 -C.sub.8 -alkyl, C.sub.1 -C.sub.8 -haloalkyl, C.sub.1 -C.sub.8 -alkoxy or C.sub.1 -C.sub.8 -haloalkoxy, or the radical ##STR2## where R.sup.4, R.sup.5 and R.sup.6 are hydrogen or C.sub.1 -C.sub.4 -alkyl, R.sup.7 is phenyl or benzoyl, or phenyl or benzoyl bearing from one to three substituents selected from the group consisting of halogen, C.sub.1 -C.sub.8 -alkyl, C.sub.1 -C.sub.8 -haloalkyl, C.sub.1 -C.sub.8 -alkoxy and C.sub.1 -C.sub.
Type:
Grant
Filed:
April 1, 1988
Date of Patent:
October 24, 1989
Assignee:
BASF Aktiengesellschaft
Inventors:
Walter Himmele, Hans Theobald, Franz Merger, Ernst Hofmann, Christoph Kuenast, Peter Hofmeister
Abstract: Naphtholactam dyes of the formula ##STR1## where R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, n, p, Z.sup.1, Z.sup.2 and the rings A, B, C and D each have the meanings stated in the description, and an optical recording medium which contains one or more naphtholactam dyes and may contain a base.
Type:
Grant
Filed:
March 12, 1987
Date of Patent:
October 24, 1989
Assignee:
BASF Aktiengesellschaft
Inventors:
Matthias Dust, Peter Neumann, Ernst Schefczik, Heidi Benthack-Thoms, Helmut Barzynski, Klaus-Dieter Schomann, Harald Kuppelmaier, Eberhard Koester
Abstract: Cable insulation having high resistance to the formation or growth of water trees and high aging resistance consists of an ethylene polymer and from 0.5 to 20 percent by weight of a styrene copolymer, which is a styrene/diene copolymer in which not less than 90% of the olefinic double bonds have been hydrogenated.
Type:
Grant
Filed:
March 5, 1987
Date of Patent:
October 24, 1989
Assignee:
BASF Aktiengesellschaft
Inventors:
Johannes Schlag, Ernst Koehnlein, Peter Bauer, Ludwig Koessler, Alfred F. Hausz
Abstract: Negative correction of gravure printing plates by filling undesirable depressions in the printing layer of the gravure printing plate with a correcting agent is carried out by a method in which the correcting agent used is a pasty material which is viscoplastic at room temperature and is based on a dispersion of a solid, highly fluorinated olefin polymer powder in an inert, sparingly volatile, organic dispersing liquid.