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    Production of aqueous copolymer dispersions
    31.
    发明专利
    Production of aqueous copolymer dispersions 未知

    公开(公告)号：DE19712247A1

    公开(公告)日：1998-10-01

    申请号：DE19712247

    申请日：1997-03-24

    Applicant: BASF AG

    Inventor： BLANKENBURG RAINER DR ,  SCHEHLMANN VOLKER DR ,  KOLTER KARL DR

    IPC: A61K9/50 ,  C08F4/04 ,  C08F4/30 ,  C08F226/00 ,  A61K7/48 ,  C09D139/00 ,  C09J139/00

    Abstract: A process for the production of aqueous copolymer dispersions (I) comprises the radical emulsion polymerisation of unsaturated monomers comprising (i) 10-70 wt% nonionic monomer(s) containing a vinyl group (A) and with a water- solubility of more than 60 g/l at 25 deg C, (ii) 30-90 wt% monounsaturated, hydrophobic monomer(s) (B) with a water-solubility of less than 60 g/l at 25 deg C and optionally (iii) 0-5 wt% monounsaturated monomer(s) (C) with at least one ionic and/or ionisable functional group, (iv) 0-10 wt% monomer(s) (D) with at least two ethylenic bonds, and (v) 0-20 wt% monounsaturated monomer(s) (E) other than (A) and (C) with a water-solubility of more than 60 g/l at 25 deg C. This process is carried out with a water-soluble polymerisation initiator (II). Also claimed are copolymer dispersions (I) obtained by this process, preferably with a wt.-average particle diameter of more than 100 nm.

    34.
    发明专利
    未知

    公开(公告)号：DE59913213D1

    公开(公告)日：2006-05-11

    申请号：DE59913213

    申请日：1999-03-11

    Applicant: BASF AG

    Inventor： MEFFERT HELMUT DR ,  SANNER AXEL DR ,  BERNDL GUNTHER DR ,  RUCHATZ FOLKER DR ,  KOLTER KARL DR ,  BAUER KURT HEINZ PROF DR

    IPC: A61K8/81 ,  A61K8/63 ,  A61K9/00 ,  A61K9/107 ,  A61K9/20 ,  A61K9/48 ,  A61K47/32 ,  C08F220/04 ,  C08F222/04

    Abstract: The invention relates to the use of copolymers comprising a) 82 to 99.9 mol % of at least one monoethylenically unsaturated C3-C8-carboxylic acid; b) 0.1 to 18 mol % of at least one monomer selected from the group b1) N-C8-C30-alkyl-substituted amides of monoethylenically unsaturated C3-C8-carboxylic acids, b2) N,N-C8-C30-dialkyl-substituted amides of mono-ethylenically unsaturated C3-C8-carboxylic acids, b3) C8-C30-alkyl esters of monoethylenically unsaturated C3-C8-carboxylic acids; c) 0 to 17.9 mol % of at least one monomer selected from the group of c1) vinyl esters of aliphatic C8-C30-carboxylic acids, c2) C8-C30-alkylvinyl ethers, the mol % data for the individual components adding up to 100%, as solubilizer.

    PROCEDIMIENTO PARA LA OBTENCION DE DISPERSIONES ACUOSAS DE POLIMEROS.
    36.
    发明专利
    PROCEDIMIENTO PARA LA OBTENCION DE DISPERSIONES ACUOSAS DE POLIMEROS. 未知

    公开(公告)号：ES2224532T3

    公开(公告)日：2005-03-01

    申请号：ES99122893

    申请日：1999-11-18

    Applicant: BASF AG

    Inventor： ANGEL MAXIMILIAN DR ,  KOLTER KARL DR ,  SANNER AXEL DR

    IPC: A61K9/32 ,  C08F2/16 ,  C08F2/22 ,  C08F2/38 ,  C08F20/10 ,  C08F220/14 ,  C08F220/18

    Abstract: Procedimiento para la obtención de una dispersión acuosa de polímeros mediante polimerización de al menos un monómero etilénicamente insaturado, polimerizable por medio de radicales del grupo constituido por ésteres de alquilo con 1 a 24 átomos de carbono de ácidos carboxílicos con 3 a 8 átomos de carbono monoetilénicamente insaturados, ésteres de alquilo con 1 a 24 átomos de carbono de ácidos dicarboxílicos con 4 a 8 átomos de carbono monoetilénicamente insaturados, ésteres de vinilo de ácidos carboxílicos con 1 a 24 átomos de carbono alifáticos, amidas de ácidos carboxílicos con 3 a 8 átomos de carbono monoetilénicamente insaturados, alquil-viniléteres con 1 a 24 átomos de carbono, amidas N- alquil-substituidas con 1 a 24 átomos de carbono de ácidos carboxílicos con 3 a 8 átomos de carbono monoetilénicamente insaturados, amidas N, N-dialquil- substituidas con 1 a 24 átomos de carbono de ácidos carboxílicos con 3 a 8 átomos de carbono monoetilénicamente insaturados, N-vinillactamas, N- vinilaminas, estireno y butadieno en un sistema acuoso en presencia de iniciadores de la polimerización, caracterizado porque el valor del pH de la dispersión acuosa se ajusta durante el procedimiento de obtención por adición de, al menos, dos reactivos diferentes, que tienen acción básica, añadiéndose al menos uno de los reactivos con acción básica, en varias etapas, siendo al menos uno de los reactivos con acción básica, un ácido débil y ajustándose la dispersión, tras la conversión completa de los monómeros, a un valor del pH de 6 hasta 10.

    37.
    发明专利
    未知

    公开(公告)号：AT269358T

    公开(公告)日：2004-07-15

    申请号：AT99122893

    申请日：1999-11-18

    Applicant: BASF AG

    Inventor： ANGEL MAXIMILIAN DR ,  KOLTER KARL DR ,  SANNER AXEL DR

    IPC: A61K9/32 ,  C08F2/16 ,  C08F2/22 ,  C08F2/38 ,  C08F20/10 ,  C08F220/14 ,  C08F220/18

    Abstract: Preparation of an aqueous polymer dispersion comprises polymerization of at least one radical-polymerizable, ethylenically unsaturated monomer in an aqueous system in the presence of a polymerization initiator where the pH of the aqueous system is set by addition of at least two different basic reagents and where at least one of the basic reagents is added more than once. Independent claims are included for: (1) aqueous polymer dispersions obtained using the process; (2) polymer powders obtained by drying the aqueous dispersions; (3) use of the dispersions as auxiliaries or coating materials for solid pharmaceutical dosage forms; and (4) solid pharmaceutical dosage forms containing polymers prepared using the process.

    Production of aqueous copolymer dispersions
    38.
    发明专利
    Production of aqueous copolymer dispersions 未知

    公开(公告)号：DE19748545A1

    公开(公告)日：1999-05-06

    申请号：DE19748545

    申请日：1997-11-03

    Applicant: BASF AG

    Inventor： BLANKENBURG RAINER DR ,  SCHEHLMANN VOLKER DR ,  KOLTER KARL DR

    IPC: A61K9/50 ,  C08F2/22 ,  C08F4/04 ,  C08F4/30 ,  C08F226/00 ,  A61K7/075 ,  A61K7/48 ,  A61K7/50 ,  C08F210/00 ,  C08F212/00 ,  C08F218/04 ,  C08F220/18 ,  C08F222/10

    Abstract: A process for the production of aqueous copolymer dispersions (I) comprises the radical emulsion polymerisation of unsaturated monomers comprising (i) 10-70 wt% nonionic monomer(s) containing a vinyl group (A) and with a water- solubility of more than 60 g/l at 25 deg C, (ii) 30-90 wt% monounsaturated, hydrophobic monomer(s) (B) with a water-solubility of less than 60 g/l at 25 deg C and optionally (iii) 0-5 wt% monounsaturated monomer(s) (C) with at least one ionic and/or ionisable functional group, (iv) 0-10 wt% monomer(s) (D) with at least two ethylenic bonds, and (v) 0-20 wt% monounsaturated monomer(s) (E) other than (A) and (C) with a water-solubility of more than 60 g/l at 25 deg C. This process is carried out with a water-soluble polymerisation initiator (II). Also claimed are copolymer dispersions (I) obtained by this process, preferably with a wt.-average particle diameter of more than 100 nm.

    39.
    发明专利
    未知

    公开(公告)号：DE19709663A1

    公开(公告)日：1998-09-17

    申请号：DE19709663

    申请日：1997-03-10

    Applicant: BASF AG

    Inventor： KOLTER KARL DR ,  TIEFENSEE KRISTIN DR ,  ZEITZ KATRIN DR

    IPC: A61K47/04 ,  A61K9/20 ,  A61K9/32 ,  A61K47/12 ,  A61K47/32 ,  A61K47/38

    Abstract: Use of redispersible polymer powders or granules as binders for preparing solid compositions, where the powders or granules comprise: (a) 10-95 wt.% polyvinyl acetate; (b) 5-90 wt.% of a N-vinylpyrrolidone polymer; (c) 0-20 wt.% of another water-soluble or water-swellable material; (d) 0-20 wt.% of a water-insoluble dusting agent; and optionally (e) further additives, and where the proportion of the binder in the dosage form is 0.5-20 wt.%. Also claimed are solid compositions with a binder comprising components (a)-(e) in the amounts specified above, where the binder makes up 0.5-20% of the total.

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