91.
    发明专利
    未知

    公开(公告)号:DE10049297A1

    公开(公告)日:2002-04-11

    申请号:DE10049297

    申请日:2000-10-04

    Applicant: BASF AG

    Abstract: The present invention relates to water-soluble or water-dispersible copolymers obtainable by free-radical polymerization of a) 80 to 20% by weight of hydroxy-C 1 -C 6 -alkyl (meth)acrylate and, where appropriate, one or more compounds of the formula (A) or (B) with R 1 =H, C 1 -C 6 -alkyl, R 2 =H, CH 3 R 3 =C 1 -C 24 -alkyl or mixtures thereof in the presence of b) 20 to 80% by weight of polyvinyl alcohol (PVA) and c) where appropriate 0 to 20% by weight of other polymerizable compounds (C), a process for their preparation, and their use as coating agent, binder and/or film-forming excipient in pharmaceutical dosage forms.

    92.
    发明专利
    未知

    公开(公告)号:ES2153193T3

    公开(公告)日:2001-02-16

    申请号:ES97921742

    申请日:1997-04-24

    Applicant: BASF AG

    Abstract: Polymer powders redispersible in aqueous solution, their use in cosmetic, pharmaceutical or crop protection formulations and a process for preparing polymer powders redispersible in aqueous solution comprising copolymers carrying free acid or base groups and, if appropriate, auxiliaries, which comprises adjusting the pH of the dispersion prior to drying by the addition of at least one buffer system to a pH of from 2.0 to 6.5 in the case of copolymers carrying free acid groups or a pH of from pH 7.5 to 12 in the case of copolymers carrying free base groups.

    93.
    发明专利
    未知

    公开(公告)号:AT197808T

    公开(公告)日:2000-12-15

    申请号:AT97921742

    申请日:1997-04-24

    Applicant: BASF AG

    Abstract: Polymer powders redispersible in aqueous solution, their use in cosmetic, pharmaceutical or crop protection formulations and a process for preparing polymer powders redispersible in aqueous solution comprising copolymers carrying free acid or base groups and, if appropriate, auxiliaries, which comprises adjusting the pH of the dispersion prior to drying by the addition of at least one buffer system to a pH of from 2.0 to 6.5 in the case of copolymers carrying free acid groups or a pH of from pH 7.5 to 12 in the case of copolymers carrying free base groups.

    95.
    发明专利
    未知

    公开(公告)号:BR9708906A

    公开(公告)日:1999-08-03

    申请号:BR9708906

    申请日:1997-04-24

    Applicant: BASF AG

    Abstract: Polymer powders redispersible in aqueous solution, their use in cosmetic, pharmaceutical or crop protection formulations and a process for preparing polymer powders redispersible in aqueous solution comprising copolymers carrying free acid or base groups and, if appropriate, auxiliaries, which comprises adjusting the pH of the dispersion prior to drying by the addition of at least one buffer system to a pH of from 2.0 to 6.5 in the case of copolymers carrying free acid groups or a pH of from pH 7.5 to 12 in the case of copolymers carrying free base groups.

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