Patents by Inventor Siegmund Besecke
Siegmund Besecke has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6077911Abstract: Polymers essentially comprising units of the formula I ##STR1## in which R.sup.1 and R.sup.2 are hydrogen or methyl andR.sup.3 is hydrogen, C.sub.1 -C.sub.18 -alkyl, C.sub.5 -C.sub.12 -cycloalkyl, C.sub.6 -C.sub.10 -aryl or C.sub.6 -C.sub.10 -aryl-C.sub.1 -C.sub.4 -alkyl, it being possible for these radicals, with the exception of the C.sub.1 -C.sub.18 -alkyl radicals, to be up to trisubstituted by radicals selected from the group consisting of C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy and halogen, are prepared by reacting a polymer based on C.sub.1 -C.sub.20 -alkyl esters of acrylic acid, methacrylic acid or mixtures thereof with ammonia or a primary amine in an extruder, by mixing the ammonia or the primary amine by mixing intensively with a melt of the polymer to be reacted, at at most 250.degree. C., before the imidation is carried out, and are used for producing thermoplastic moldings, films or fibers.Type: GrantFiled: July 27, 1993Date of Patent: June 20, 2000Assignee: BASF AktiwngesellschaftInventors: Siegmund Besecke, Andreas Deckers, Juergen Hofmann, Harald Kroeger, Hilmar Ohlig
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Patent number: 5563178Abstract: An expandable styrene polymer comprisinga) from 0 to 90% by weight of a styrene polymer or styrene copolymer other than b) contains at least 50% by weight of copolymerized styrene,b) from 10 to 100% by weight of a styrene/methacrylamide copolymer comprising from 0.5 to 50% by weight of at least one copolymerized N-substituted methacrylamide of the formula I ##STR1## where R.sup.1 and R.sup.2 are identical or different and are hydrogen, C.sub.1 - to C.sub.15 -alkyl, C.sub.6 - to C.sub.16 -cycloalkyl or C.sub.6 - to C.sub.20 -aryl, it being possible, if R.sup.1 and R.sup.2 contain at least 2 carbon atoms, for at least 2 carbon atoms to be linked via hetero atoms, andc) from 1 to 15% by weight, based on the sum of a) and b), of an aliphatic C.sub.3 - to C.sub.9 -hydrocarbon and/or carbon dioxide as blowing agent.Type: GrantFiled: May 22, 1995Date of Patent: October 8, 1996Assignee: BASF AktiengesellschaftInventors: Rolf Henn, Siegmund Besecke, Andreas Deckers, Norbert Guentherberg, Martin Brudermueller, Gerhard Nestler, Karl-Heinz Wassmer
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Patent number: 5476907Abstract: A polymer useful for preparing moldings and comprising essentially units of the formula I ##STR1## where R.sup.1 and R.sup.2 are each hydrogen or methyl, andR.sup.3 is hydrogen, C.sub.1 -C.sub.18 -alkyl, C.sub.5 -C.sub.8 -cycloalkyl, C.sub.6 -C.sub.10 -aryl or C.sub.6 -C.sub.10 -aryl-C.sub.1 -C.sub.4 -alkyl, each of which may be monosubstituted, disubstituted or trisubstituted by radicals selected from the group consisting of C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy and halogen, is obtainable by reacting a polymer based on C.sub.1 -C.sub.20 -alkyl esters of (meth)acrylic acid with a primary amine of the general formula IIR.sup.3 NH.sub.2 IIin the presence of a compound selected from the group consisting of phosphinic acid and phosphonic acid and their alkali metal, alkaline earth metal, aluminum and ammonium salts, wherein the ammonium ion can be monosubstituted, disubstituted, trisubstituted or tetrasubstituted by C.sub.1 -C.sub.4 -alkyl and/or C.sub.5 -C.sub.8 -cycloalkyl, or mixtures thereof.Type: GrantFiled: October 11, 1994Date of Patent: December 19, 1995Assignee: BASF AktiengesellschaftInventors: Siegmund Besecke, Andreas Deckers, Harald Lauke
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Patent number: 5464881Abstract: An expandable styrene polymer comprisinga) from 0 to 90% by weight of a styrene polymer or styrene copolymer other than b) contains at least 50% by weight of copolymerized styrene,b) from 10 to 100% by weight of a styrene/methacrylamide copolymer comprising from 0.5 to 50% by weight of at least one copolymerized N-substituted methacrylamide of the formula I ##STR1## where R.sup.1 and R.sup.2 are identical or different and are hydrogen, C.sub.1 - to C.sub.15 -alkyl, C.sub.6 - to C.sub.16 -cycloalkyl or C.sub.6 - to C.sub.20 -aryl, it being possible, if R.sup.1 and R.sup.2 contain at least 2 carbon atoms, for at least 2 carbon atoms to be linked via hetero atoms, andc) from 1 to 15% by weight, based on the sum of a) and b), of an aliphatic C.sub.3 - to C.sub.9 -hydrocarbon and/or carbon dioxide as blowing agent.Type: GrantFiled: November 22, 1994Date of Patent: November 7, 1995Assignee: BASF AktiengesellschaftInventors: Rolf Henn, Siegmund Besecke, Andreas Deckers, Norbert Guentherberg, Martin Brudermueller, Gerhard Nestler, Karl-Heinz Wassmer
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Patent number: 5442109Abstract: At least 99% pure 2,2'[oxybis (methylene)]bis-2-propenoic acidCH.sub.2 .dbd.C(COOH)CH.sub.2 --O--CH.sub.2 C(COOH).dbd.CH.sub.2is prepared by hydrolyzing an ester thereof in an aqueous basic medium and then acidifying the resultant salt.Type: GrantFiled: August 29, 1994Date of Patent: August 15, 1995Assignee: BASF AktiengesellschaftInventors: Siegmund Besecke, Harald Lauke, Andreas Deckers
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Patent number: 5395898Abstract: A polymer useful for preparing shaped articles comprises essentially repeat units of the formula I ##STR1## where R.sup.1 and R.sup.2 are each hydrogen or methyl, andR.sup.3 is C.sub.6 -C.sub.14 -aryl, which may be monosubstituted, disubstituted or trisubstituted by radicals selected from the group consisting of C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy and halogen,and is obtainable by reacting a polymer based on C.sub.1 -C.sub.20 -alkyl esters of methacrylic acid or of acrylic acid or mixtures of such esters with an aromatic amine of the general formula IIR.sup.3 NH.sub.2 IIin the presence of an amine having a pK.sub.b value .ltoreq.9.Type: GrantFiled: April 18, 1994Date of Patent: March 7, 1995Assignee: BASF AktiengesellschaftInventors: Siegmund Besecke, Andreas Deckers, Harald Lauke
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Patent number: 5393917Abstract: A process for isolating and purifying oxadimethacrylics of the general formula ICH.sub.2 .dbd.C(A)CH.sub.2 --O--CH.sub.2 C(B).dbd.CH.sub.2 Iwhere A and B are selected from the group consisting of --COOR.sup.1, --COR.sup.1, --CONR.sup.2 R.sup.3 and --CN and R.sup.1, R.sup.2 and R.sup.3 are each defined as follows:R.sup.1 is hydrogen, alkyl, substituted or unsubstituted cycloalkyl or cycloalkylalkyl, hydroxyalkyl, aminoalkyl, N-alkylaminoalkyl, N,N-dialkylaminoalkyl, substituted or unsubstituted aryl or arylalkyl,R.sup.2 and R.sup.3 are each hydrogen, alkyl, substituted or substituted cycloalkyl or cycloalkylalkyl, substituted or unsubstituted aryl or arylalkyl,comprises precipitating or crystallizing them from their solutions that contain at least one liquid hydrocarbon compound.Type: GrantFiled: December 16, 1993Date of Patent: February 28, 1995Assignee: BASF AktiengesellschaftInventors: Siegmund Besecke, Andreas Deckers, Harald Lauke
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Patent number: 5378765Abstract: A polymer useful for preparing shaped articles comprises essentially repeat units of the formula I ##STR1## where R.sup.1 and R.sup.2 are each hydrogen or methyl, andR.sup.3 is C.sub.6 -C.sub.14 -aryl, which may be monosubstituted, disubstituted or trisubstituted by radicals selected from the group consisting of C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy and halogen,and is obtainable by reacting a polymer based on C.sub.1 -C.sub.20 -alkyl esters of metharcylic acid or of arcylic acid or mixtures of such esters with an aromatic amine of the general formula IIR.sup.3 NH.sub.2 IIin the presence of an amine having a pK.sub.b value .ltoreq.9.Type: GrantFiled: November 12, 1993Date of Patent: January 3, 1995Assignee: BASF AktiengesellschaftInventors: Siegmund Besecke, Andreas Deckers, Harald Lauke
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Patent number: 5374688Abstract: A polymer comprising essentially units of formula I ##STR1## where R.sup.1 and R.sup.2 are each hydrogen or methyl, andR.sup.3 is C.sub.4 -C.sub.18 -alkyl, C.sub.5 -C.sub.8 -cycloalkyl, C.sub.6 -C.sub.10 -aryl or C.sub.6 -C.sub.10 -aryl-C.sub.1 -C.sub.4 -alkyl, each of which except for the C.sub.4 -C.sub.18 -alkyl may be monosubstituted, disubstituted or trisubstituted by radicals selected from the group consisting of C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy and halogen, and having a carboxyl and anhydride group content of equal to or less than 0.40 equivalent per kilogram of polymer and an inherent color (measured as yellowness index) of equal to or less than 2.0, is obtainable by reacting a polymer based on C.sub.1 -C.sub.20 -alkyl esters of (meth)acrylic acid with a primary amine of the general formula IIR.sup.3 NH.sub.2 IIby removing the alcohol that forms during the reaction from the reaction mixture.Type: GrantFiled: December 21, 1992Date of Patent: December 20, 1994Assignee: BASF AktiengesellschaftInventors: Siegmund Besecke, Andreas Deckers, Wolfgang Loth, Harald Lauke
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Patent number: 5354895Abstract: Oxadimethacrylics useful for preparing pollers have the general formula ICH.sub.2 .dbd.C(A)CH.sub.2 --O--CH.sub.2 C(B).dbd.CH.sub.2 Iwhere A and B are selected from the group consisting of --COOR.sup.1, --COR.sup.1, --CONR.sup.2 R.sup.3 and --CN with the proviso that A.noteq.B, and R.sup.1, R.sup.2 and R.sup.3 are each defined as follows:R.sup.1 is hydrogen, C.sub.1 -C.sub.18 -alkyl, C.sub.3 -C.sub.8 -cycloalkyl, C.sub.3 -C.sub.8 -cycloalkyl-C.sub.1 -C.sub.5 -alkyl, wherein the cycloalkyl rings may be C.sub.1 -C.sub.4 -alkyl- or C.sub.1 -C.sub.4 -alkoxy-monosubstituted, -disubstituted or -trisubstituted, hydroxy-C.sub.1 -C.sub.5 -alkyl, amino-C.sub.1 -C.sub.5 -alkyl, N-C.sub.1 -C.sub.4 -alkylamino-C.sub.1 -C.sub.5 -alkyl, N,N-di-(C.sub.1 -C.sub.4 -alkyl)amino-C.sub.1 -C.sub.5 -alkyl, C.sub.6 -C.sub.18 -aryl, C.sub.6 -C.sub.18 -aryl-C.sub.1 -C.sub.4 -alkyl, wherein the aryl groups may carry up to three of the following groups: halogen, C.sub.1 -C.sub.22 -alkyl, C.sub.1 -C.sub.4 -alkoxy, carboxyl, C.sub.1 -C.Type: GrantFiled: December 23, 1992Date of Patent: October 11, 1994Assignee: BASF AktiengesellschaftInventors: Siegmund Besecke, Andreas Deckers, Harald Lauke
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Patent number: 5354814Abstract: Copolymers obtainable by(I) copolymerizing a monomer mixture comprising(A) 1 to 98% by weight of a monomer of the formula I ##STR1## where: R.sup.1 to R.sup.6 are hydrogen, C.sub.1 -C.sub.10 -alkyl, C.sub.1 -C.sub.10 -alkoxy, it being possible in the alkyl or alkoxy radicals having more than one carbon atom for an oxygen atom to be inserted in each case between two carbon atoms, C.sub.5 -C.sub.8 -cycloalkyl, unsubstituted or substituted C.sub.6 -C.sub.10 -aryl, C.sub.6-C.sub.10 -aryl-C.sub.1 -C.sub.10 -alkyl, C.sub.6 -C.sub.10 -aryloxy, cyano, halogen, --CO--O--R.sup.7, --O--CO--R.sup.7 or --CO--NR.sup.7 R.sup.8, whereR.sup.7 and R.sup.8 are hydrogen, C.sub.1 -C.sub.10 -alkyl, C.sub.5 -C.sub.8 -cycloalkyl, unsubstituted or substituted C.sub.6 -C.sub.10 -aryl or C.sub.6 -C.sub.10 -aryl-C.sub.1 -C.sub.10 -alkyl;p is 0, 1 or 2;Z is --CH.sub.2 --, oxygen or sulfur;Y is oxygen or --N--R.sup.9, whereR.sup.9 is hydrogen, C.sub.1 -C.sub.22 -alkyl, C.sub.5 -C.sub.12 -cycloalkyl, unsubstituted or substituted C.sub.Type: GrantFiled: June 28, 1993Date of Patent: October 11, 1994Assignee: BASF AktiengesellschaftInventors: Siegmund Besecke, Andreas Deckers, Harald Lauke
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Patent number: 5350808Abstract: A polymer comprising essentially at least two different repeat units of the formula I ##STR1## where R.sup.1 and R.sup.2 are each hydrogen or methyl,n is 0 or an integer from 1 to 9, andR.sup.3+n are from two to ten mutually different groups selected from hydrogen, C.sub.1 -C.sub.22 -alkyl, C.sub.5 -C.sub.8 -cycloalkyl, C.sub.6 -C.sub.10 -aryl or C.sub.6 -C.sub.10 -aryl-C.sub.1 -C.sub.4 -alkyl, which radicals, except the C.sub.1 -C.sub.22 -alkyl, may each be monosubstituted, disubstituted or trisubstituted by radicals selected from the group consisting of C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy and halogen,is obtainable by reacting a polymer based on C.sub.1 -C.sub.20 -alkyl esters of (meth)acrylic acid with ammonia and from one to nine primary amines or a mixture of from two to ten primary amines of the general formula IIR.sup.3+n NH.sub.2 II.Type: GrantFiled: December 21, 1992Date of Patent: September 27, 1994Assignee: BASF AktiengesellschaftInventors: Siegmund Besecke, Andreas Deckers, Harald Lauke
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Patent number: 5338805Abstract: Copolymers are obtainable by (1) copolymerization of a monomer mixture of(A) from 1 to 99% by weight of at least one monomer of the general formula ICH.sub.2 .dbd.C(E)CH.sub.2 --O--CH.sub.2 C(F).dbd.CH.sub.2 Iwhere E and F are selected from the group consisting of --COOR.sup.1, --COR.sup.1, --CONR.sup.2 R.sup.3 and --CN, and R.sup.1 is H, C.sub.1 -C.sub.18 -alkyl, unsubstituted or substituted C.sub.3 -C.sub.8 -cycloalkyl or C.sub.3 -C.sub.8 -cycloalkyl- C.sub.1 -C.sub.5 -alkyl, hydroxy-C.sub.1 -C.sub.5 -alkyl, amino-C.sub.1 -C.sub.5 -alkyl, N-C.sub.1 -C.sub.4 -alkylamino-C.sub.1 -C.sub.5 -alkyl, N, N-di-C.sub.1 -C.sub.4 -alkylamino-C.sub.1 -C.sub.5 -alkyl, unsubstituted or substituted C.sub.6 -C.sub.18 -aryl or C.sub.6 -C.sub.18 -aryl-C.sub.1 -C.sub.4 -alkyl, andR.sup.2 and R.sup.3 are each H, C.sub.1 -C.sub.18 -alkyl, unsubstituted or substituted C.sub.3 -C.sub.8 -cycloalkyl or C.sub.3 -C.sub.8 -cycloalkyl-C.sub.1 -C.sub.5 -alkyl, unsubstituted or substituted C.sub.6 -C.sub.18 -aryl or C.sub.6 -C.sub.Type: GrantFiled: March 16, 1993Date of Patent: August 16, 1994Assignee: BASF AktiengesellschaftInventors: Siegmund Besecke, Andreas Deckers, Harald Lauke
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Patent number: 5310867Abstract: Abstract of the Disclosure: Particles of poly(meth)acrylimides obtainable by reacting a polymer based on C.sub.1 -C.sub.22 -alkyl esters of acrylic and/or methacrylic acid with ammonia and/or at least one primary amine RNH.sub.2 are produced byA) exiting a solution of the polymer from a nozzle in a multiplicity of jets of liquid,B) breaking up the jets of liquid into droplets having a narrow size distribution by setting the nozzle swinging longitudinally or transversely or by pulsing the liquid inside the nozzle or by providing for some distance between the point of exit from the nozzle and the point of entry into a coagulating bath,C) precipitating the resulting droplets by introducing them into a coagulating bath which contains a liquid in which the polymer does not dissolve, andD) stripping the polymer particles of solvent residues and other impurities,and are useful for making shaped articles.Type: GrantFiled: February 25, 1993Date of Patent: May 10, 1994Assignee: BASF AktiengesellschaftInventors: Siegmund Besecke, Andreas Deckers, Hermann Fischer, Eckhard Neufeld
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Patent number: 5300601Abstract: Suspension polymers ofa) from 80 to 100% by weight of methyl methacrylate andb) from 0 to 20% by weight of further monomers capable of undergoing free radical polymerization,are obtainable by polymerization at a temperature of from 100.degree. to 140.degree. C. which is virtually constant over the major part of the polymerization time by means of an initiator system consisting of two or more peroxide initiators I having different decomposition temperatures T at which in each case half of the initiator has decomposed after 1 hour, whereinthe initiator I.sub.min having the lowest decomposition temperature has a decomposition temperature T.sub.min of from 60.degree. to 100.degree. C.,the initiator I.sub.max having the highest decomposition temperature has a decomposition temperature T.sub.max of from 100.degree. to 140.degree. C., the difference between T.sub.max and T.sub.min is greater than 10.degree. C. and I.sub.max is a perketal of the general formula (1) ##STR1## where R.sup.1 and R.sup.Type: GrantFiled: December 2, 1991Date of Patent: April 5, 1994Assignee: BASF AktiengesellschaftInventors: Siegmund Besecke, Wilfried Schoen, Karl-Ludwig Endlich
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Patent number: 5286801Abstract: Emulsion graft copolymers composed ofa) 2-10% by weight of a core composed of80-99.99% by weight of methyl methacrylate (I),0.01-5% by weight of allyl methacrylate (II),0-19.99% by weight of other monofunctional comonomers (III) and0-3% by weight of other di- or polyfunctional comonomers (IV),b) 15-50% by weight of a first shell composed of60-89.99% by weight of a C.sub.1 -C.sub.20 -alkyl acrylate (V),10-39.99% by weight of a vinylaromatic monomer (VI),0.01-5% by weight of II,0-10% by weight of I and/or III,0-3% by weight of IV,c) 5-20% by weight of a second shell with a composition as indicated under (a),d) 15-50% by weight of a third shell with a composition as indicated under (b),e) 15-30% by weight of a fourth shell composed of80-99.95% by weight of I,0.05-2% by weight of a regulator (VII) and0-19.95% by weight of III,are suitable as additives to increase the impact strength of thermoplastic compositions.Type: GrantFiled: April 30, 1992Date of Patent: February 15, 1994Assignee: BASF AktiengesellschaftInventors: Siegmund Besecke, Daniel Wagner, Wilfried Schoen, Karl-Ludwig Endlich
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Patent number: 5247035Abstract: At least 95% tetrahydrofuran soluble polymers are obtainable by copolymerization of a monomer mixture ofA) from 1 to 99% by weight of at least one at least 98% pure monomer of the general formula ICH.sub.2 .dbd.C(E)CH.sub.2 --O--CH.sub.2 C(E').dbd.CH.sub.2 Iwhere E and E' have been selected from the group consisting of --COOR.sup.1, --COR.sup.1, --CONR.sup.2 R.sup.3 and --CN and R.sup.1, R.sup.2 and R.sup.3 are each defined as follows:R.sup.1 =H, alkyl, cycloalkyl, cycloalkylalkyl, wherein the cycloalkyl rings may be alkyl- or alkoxy-monosubstituted, -disubstituted or -trisubstituted, hydroxyalkyl, aminoalkyl, alkylaminoalkyl, dialkylaminoalkyl, aryl, arylalkyl, wherein the aryl groups may carry up to three of the following groups: halogen, alkyl, alkoxy, carboxyl, alkoxycarbonyl, aminocarbonyl, alkylaminocarbonyl, dialkylaminocarbonyl, nitrilo, nitro, amino, alkylamino, dialkylamino;R.sup.2, R.sup.Type: GrantFiled: January 19, 1993Date of Patent: September 21, 1993Assignee: BASF AktiengesellschaftInventors: Siegmund Besecke, Andreas Deckers, Harald Lauke
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Patent number: 4698448Abstract: Compounds of the formula ##STR1## wherein R is lower alkyl or aryl, Y is oxygen or sulfur, m is 0 or 1, Ar is arylene, and X is halogen, methyl, or aryloxy, or polymers containing repeating units of this kind are prepared from a compound R--P(Y).sub.r Cl.sub.2, where r is 0 or 1 but is never greater than m, by reaction with one or two molar parts of a compound H--ArX in the presence of a Friedel-Crafts catalyst.Type: GrantFiled: July 2, 1985Date of Patent: October 6, 1987Assignee: Rohm GmbHInventors: Werner Ude, Siegmund Besecke, Achim Riemann, Guenther Schroeder
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Patent number: 4675442Abstract: What is disclosed is a method for making an amide of acrylic acid or of methacrylic acid by the reaction of an alkyl ester of acrylic acid or of methacrylic acid with an amine at a temperature between 50.degree. C. and 180.degree. C., whereby the reaction with the amine is carried out in the presence of a catalytic amount of a compound of a metal of Group IVB of the periodic table of the elements or of a compound of lead, zinc, or tantalum.Type: GrantFiled: March 6, 1985Date of Patent: June 23, 1987Assignee: Rohm GmbHInventors: Siegmund Besecke, Guenter Schroeder
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Patent number: 4652656Abstract: UV absorbing compounds, susceptible to free-radical polymerization, of the formula ##STR1## wherein R is alkyl having from 4 to 12 carbon atoms of which not more than 6 are present in a linear chain, and in particular2-(2'-hydroxy-3'-methacrylamidomethyl-5'-tert-octylphenyl)benzotriazole, and polymers thereof.Type: GrantFiled: April 14, 1986Date of Patent: March 24, 1987Assignee: Rohm GmbHInventors: Siegmund Besecke, Ralf Liebler, Heinz-Juergen Hohage, Guenter Schroeder