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    61.
    发明专利
    未知

    公开(公告)号：AT249426T

    公开(公告)日：2003-09-15

    申请号：AT99125660

    申请日：1999-12-22

    Applicant: BASF AG

    Inventor： KESSEL KNUT ,  KLUGE MICHAEL ,  GREINDL THOMAS ,  BOGENSTAETTER THOMAS ,  SCHERR GUENTER ,  RAULS MATTHIAS ,  VAN GELDER RICHARD

    IPC: C07C277/08 ,  C07C279/14 ,  C07C303/22 ,  C07C309/15 ,  C07F9/38

    Abstract: Preparation of guanidine derivatives (I) comprises reacting O-alkylisourea salts (II) with an amine (III) in the presence of seed crystals of (I). Preparation of guanidine derivatives of formula (I) comprises reacting O-alkylisourea salts of formula (II) with an amine of formula (III) in the presence of seed crystals of (I). R1 = 1-8C alkylene or a divalent 5-10C cycloaliphatic group; R2 = H or 1-8C alkyl; or NR1R2 = 5-6 membered ring substituted by Z; Z = COOR3, SO2OR3 or PO(OR3)(OR4); R3 = H, alkalimetal or an equivalent of an alkaline earth metal; and R4 = as for R3 or 1-6C alkyl; R5 = 1-8C alkyl; X = equivalent of an anion.

    64.
    发明专利
    未知

    公开(公告)号：AT233728T

    公开(公告)日：2003-03-15

    申请号：AT00128184

    申请日：2000-12-21

    Applicant: BASF AG

    Inventor： KESSEL KNUT ,  SCHERR GUENTER ,  BOGENSTAETTER THOMAS ,  ORSTEN STEFAN ,  FRANKE DIRK

    IPC: C07C277/06 ,  C07C277/08 ,  C07C279/14

    Abstract: Purification of creatine (I) involves adding the (I) to be purified, in anhydrous form, to a saturated aqueous solution of (I) monohydrate, so that the anhydrous (I) is dissolved with hydration, then separating the crystals of (I) monohydrate which precipitate from the solution. An Independent claim is also included for the preparation of (I) monohydrate, by: (a) reacting sarcosine with an guanylating agent in an aqueous medium, so that crude (I) monohydrate is precipitated; (b) separating the crude product form the medium; (c) optionally washing; (d) converting the product into anhydrous (I); (e) adding the anhydrous (I) to a saturated aqueous solution of (I) monohydrate, so that the anhydrous (I) is dissolved with hydration; (f) separating the crystals of (I) monohydrate which precipitate from the solution; and (g) utilizing the aqueous solution at least partially as aqueous medium in step (a) and/or washing liquid in step (c).

    65.
    发明专利
    未知

    公开(公告)号：DE10122025A1

    公开(公告)日：2002-11-14

    申请号：DE10122025

    申请日：2001-05-07

    Applicant: BASF AG

    Inventor： LUNKWITZ RALPH ,  PABST GUNTHER ,  SCHERR GUENTER

    IPC: C07D401/14 ,  C07D213/50 ,  C07D213/61 ,  C07D213/68 ,  C07D213/803 ,  C07D213/44 ,  C07D213/79

    Abstract: A process for the production of pyridine-2-carboxylic acid-(1-4C) alkyl ester compounds comprises acid hydrolysis of a 2-cyanopyridine derivative with an anhydrous inorganic acid or its anhydride in the presence of water and a 1-4C alcohol. An equimolar quantity of water is added before the addition of the acid or anhydride. A process for the production of pyridine-2-carboxylic acid-(1-4C) alkyl ester compounds (I) of formula (1) comprises acid hydrolysis of a 2-cyanopyridine derivative (II) of formula (2) with an anhydrous acid or its anhydride in the presence of water and a 1-4C alcohol. An equimolar quantity of water is added to the compound (II) before the addition of the acid or anhydride. R = H, 1-12C alkyl or alkoxy; and n = 0-4. Independent claims are included for: (1) a process for the production of terpyridines of formula (3) involves: (i) condensation of a pyridine-2-carboxylic acid-(1-4C)-alkyl ester (I) with acetone in an aprotic solvent in the presence of an alkali- or alkaline earth (1-4C)-alcoholate; (ii) reaction of the resulting 1,5-bis(2-pyridyl)pentan-1,3,5-trione compound of formula (4) with ammonia or ammonium salts of formula (5) with removal of the water of reaction using a 1-4C alcohol as a driving agent; and (iii) chlorination of the resulting 2,6-bis(2-pyridyl)-(1H) pyridone compound of formula (6) using POCl3 and toluene, o-xylene, m-xylene and/or p-xylene; (2) a processes for the production of the 1,5-bis(2-pyridyl)-pentan-1,3,5 trione compounds of formula (4) and 2,6-bis(2-pyridyl)-4(1H) pyridone compounds of formula (6). Y = acid anion; Z = NH if the reaction step (ii) is using ammonia, or NH2 if the reaction step (ii) is using (NH4)qY; and q = valency of acid.

    66.
    发明专利
    未知

    公开(公告)号：DE19962227A1

    公开(公告)日：2001-06-28

    申请号：DE19962227

    申请日：1999-12-22

    Applicant: BASF AG

    Inventor： KESSEL KNUT ,  SCHERR GUENTER ,  BOGENSTAETTER THOMAS ,  ORSTEN STEFAN ,  FRANKE DIRK

    IPC: C07C277/06 ,  C07C277/08 ,  C07C279/14

    Abstract: Purification of creatine (I) involves adding the (I) to be purified, in anhydrous form, to a saturated aqueous solution of (I) monohydrate, so that the anhydrous (I) is dissolved with hydration, then separating the crystals of (I) monohydrate which precipitate from the solution. An Independent claim is also included for the preparation of (I) monohydrate, by: (a) reacting sarcosine with an guanylating agent in an aqueous medium, so that crude (I) monohydrate is precipitated; (b) separating the crude product form the medium; (c) optionally washing; (d) converting the product into anhydrous (I); (e) adding the anhydrous (I) to a saturated aqueous solution of (I) monohydrate, so that the anhydrous (I) is dissolved with hydration; (f) separating the crystals of (I) monohydrate which precipitate from the solution; and (g) utilizing the aqueous solution at least partially as aqueous medium in step (a) and/or washing liquid in step (c).

    69.
    发明专利
    未知

    公开(公告)号：ES2119568T3

    公开(公告)日：1998-10-01

    申请号：ES96904005

    申请日：1996-02-07

    Applicant: BASF AG

    Inventor： ETTL ROLAND ,  LORENCAK PRIMOZ ,  SCHERR GUENTER ,  REUTHER WOLFGANG ,  GLAS GUENTHER

    IPC: C08G73/04 ,  C09K23/52 ,  D21H17/03 ,  D21H17/17 ,  D21H17/34 ,  D21H17/56 ,  D21H21/16 ,  D21H17/72

    Abstract: PCT No. PCT/EP96/00500 Sec. 371 Date Aug. 19, 1997 Sec. 102(e) Date Aug. 19, 1997 PCT Filed Feb. 7, 1996 PCT Pub. No. WO96/26318 PCT Pub. Date Aug. 29, 1997Aqueous alkyldiketene dispersions which contain a C14-C22-alkyldiketene and from 1 to 10% by weight of a polymeric protective colloid contain, as the protective colloid (a) copolymers of (1) N-vinylpyrrolidone and (2) at least one quaternized N-vinylimidazole or a substituted quaternized N-vinylimidazole as polymerized units in a molar ratio of from 80:20 to 5:95 and have a K value of at least 20 (according to H. Fikentscher in 0.5 M aqueous sodium chloride solution at a polymer concentration of 0.1% by weight and at 25 DEG C.) or (b) condensates which are obtainable by (1) partial amidation of polyethyleneimines with monocarboxylic acids and, if required (2) condensation of the partially amidated polyethyleneimines with at least bifunctional crosslinking agents which have a halohydrin, glycidyl, aziridine or isocyanate unit or a halogen atom as a functional group to give crosslinked, amidated polyethyleneimines which have a viscosity of at least 100 mPa.s in 20% strength by weight aqueous solution at 20 DEG C., or mixtures of (a) and (b) and are used as engine size in the production of paper, board and cardboard and for rendering cellulosic fibers water-repellent.

    70.
    发明专利
    未知

    公开(公告)号：AT169973T

    公开(公告)日：1998-09-15

    申请号：AT96904005

    申请日：1996-02-07

    Applicant: BASF AG

    Inventor： ETTL ROLAND ,  LORENCAK PRIMOZ ,  SCHERR GUENTER ,  REUTHER WOLFGANG ,  GLAS GUENTHER

    IPC: D21H17/34 ,  C08G73/04 ,  C09K23/52 ,  D21H17/03 ,  D21H17/17 ,  D21H17/56 ,  D21H21/16 ,  D21H17/72 ,  D21H17/45 ,  D21H17/54

    Abstract: PCT No. PCT/EP96/00500 Sec. 371 Date Aug. 19, 1997 Sec. 102(e) Date Aug. 19, 1997 PCT Filed Feb. 7, 1996 PCT Pub. No. WO96/26318 PCT Pub. Date Aug. 29, 1997Aqueous alkyldiketene dispersions which contain a C14-C22-alkyldiketene and from 1 to 10% by weight of a polymeric protective colloid contain, as the protective colloid (a) copolymers of (1) N-vinylpyrrolidone and (2) at least one quaternized N-vinylimidazole or a substituted quaternized N-vinylimidazole as polymerized units in a molar ratio of from 80:20 to 5:95 and have a K value of at least 20 (according to H. Fikentscher in 0.5 M aqueous sodium chloride solution at a polymer concentration of 0.1% by weight and at 25 DEG C.) or (b) condensates which are obtainable by (1) partial amidation of polyethyleneimines with monocarboxylic acids and, if required (2) condensation of the partially amidated polyethyleneimines with at least bifunctional crosslinking agents which have a halohydrin, glycidyl, aziridine or isocyanate unit or a halogen atom as a functional group to give crosslinked, amidated polyethyleneimines which have a viscosity of at least 100 mPa.s in 20% strength by weight aqueous solution at 20 DEG C., or mixtures of (a) and (b) and are used as engine size in the production of paper, board and cardboard and for rendering cellulosic fibers water-repellent.

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