| 摘要 |
PCT No. PCT/EP97/04550 Sec. 371 Date Mar. 1, 1999 Sec. 102(e) Date Mar. 1, 1999 PCT Filed Aug. 21, 1997 PCT Pub. No. WO98/09616 PCT Pub. Date Mar. 12, 1998Solid foamed active ingredient preparations based on melt-processable polymers, obtainable by extrusion of a melt of one or more polymers which comprises active ingredient and which is impregnated with a volatile, physiologically acceptable blowing agent and expanded. |
