Title:
【発明の名称】二次層を有するヒドロゲルマイクロビーズ
Document Type and Number:
Japanese Patent JP2003512393
Kind Code:
A
Abstract:
A microbead having a matrix core comprising a hydrophilic matrix and droplets of active material entrained therein, and a secondary layer adjacent to the outer surface of the matrix core. The secondary layer may be ionically complexed or hydrogen bonded to the matrix core surface. Compositions comprising the microbeads suspended in solution may be sprayable. The microbeads of the invention may be controllable by exposing the microbeads to high or low humidity or moisture.
Inventors:
Quong, Douglas
Application Number:
JP2001532584A
Publication Date:
April 02, 2003
Filing Date:
October 03, 2000
Export Citation:
Assignee:
3M Innovative Properties Company
International Classes:
A01N25/10; A01N25/22; A01N25/24; A01N25/28; A01N49/00; A01N25/26; A61K8/04; A61K8/34; A61K8/35; A61K8/37; A61K8/73; A61Q13/00; A61Q19/00; B01J13/00; B01J13/10; B01J13/14; (IPC1-7): A01N25/26; A01N25/10; A01N25/22; A01N25/24; A01N49/00
Attorney, Agent or Firm:
Takashi Ishida (4 others)