228.
    发明专利
    未知

    公开(公告)号:AT269696T

    公开(公告)日:2004-07-15

    申请号:AT01105544

    申请日:2001-03-06

    Applicant: BASF AG

    Abstract: Hard capsules contain: (A) polymer obtained by radical polymerization of at least one 1-24C carboxylic acid vinyl ester (a) in presence of a polyether compound (b) and optionally comonomer(s) (c), followed by at least partial saponification of the ester residues in the obtained copolymer; (B) optional structure-improving auxiliaries; and (C) further conventional components. Hard capsules contain: (A) polymer obtained by radical polymerization of at least one 1-24C carboxylic acid vinyl ester (a) in presence of a polyether compound (b) and optionally comonomer(s) (c) (provided that if comonomers (c) are absent then polyether (b) has number average molecular weight of 10000 or less), followed by at least partial saponification of the ester residues in the obtained copolymer; (B) optional structure-improving auxiliaries; and (C) further conventional components. An Independent claim is included for the use of the polymers (A) for the preparation of hard capsules as above, provided that if (c) are absent, then (b) has number average molecular weight 300-10000.

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