发明名称 |
Method for producing preparations of substances poorly soluble in water |
摘要 |
The invention relates to a process for producing formulations of sparingly water-soluble substances, said sparingly soluble substances being present in amorphous embedded form in a copolymer, and said copolymer being obtained by free-radically initiated polymerization of a mixture of
i) 30 to 80% by weight of N-vinyllactam,ii) 10 to 50% by weight of vinyl acetate, andiii) 10 to 50% by weight of a polyether,
with the proviso that the sum of components i), ii) and iii) equals 100% by weight, which comprises embedding the sparingly soluble substance into the copolymer at temperatures above the melting point of the sparingly soluble substances. |
申请公布号 |
US8790703(B2) |
申请公布日期 |
2014.07.29 |
申请号 |
US201013262380 |
申请日期 |
2010.03.30 |
申请人 |
BASF SE |
发明人 |
Meyer-Böhm Kathrin;Dobrawa Rainer;Fischer Stefan;Kolter Karl |
分类号 |
A61K9/14;C08F283/06;C08F18/08;C08F226/06;C08F226/10;A61K8/91;A61K9/20;A23L1/29;A23L1/27;A23L1/30;A61K47/34;A61K8/86;A61K9/16 |
主分类号 |
A61K9/14 |
代理机构 |
Servilla Whitney LLC |
代理人 |
Servilla Whitney LLC |
主权项 |
1. A process for producing a formulation of a sparingly water-soluble substance, the process comprising amorphously embedding a sparingly water-soluble substance in a graft copolymer, wherein the copolymer is obtained by free-radically initiated polymerization of a mixture of
i) 30 to 80% by weight of N-vinyllactam, ii) 10 to 50% by weight of vinyl acetate, and iii) 10 to 50% by weight of a polyether,with the proviso that the sum of components i), ii) and iii) equals 100% by weight, and wherein embedding the sparingly water-soluble substance into the copolymer occurs at a temperature above the melting point of the sparingly water-soluble substance. |
地址 |
Ludwigshafen DE |