MEYER BOHM KATHRIN,DOBRAWA RAINER,FISCHER STEFAN,KOLTER KARL
申请号：
IN7773/CHENP/2011
公开号：
IN2011CN07773A
申请日:
2011.10.24
申请国别(地区):
IN
年份:
2012
代理人:
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, 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, which comprises embedding the sparingly soluble substance into the copolymer at temperatures above the melting point of the sparingly soluble substances.
