Wenderoth, Lind & Ponack
Hydrogel
 The hydrogel of the invention contains polyvinyl alcohol (a hydrogel support), and a high water-absorbent resin and/or a hydrophilic high molecular compound, which are capable of containing a large amount of water. The rate of evaporation of water from this hydrogel is slow. The hydrogel retains water for a long time and releases an active ingredient gradually. The hydrogel containing a pharmacologically active substance is useful as a pharmaceutical preparation. 
Takeda Chemical Industries, Ltd.
A A A
A61K A61K A61K
inventional inventional inventional
Yasuyuki Hisayoshi
Suzuki Shimizu