ApplicationNo. 05/615086 filed on 09/19/1975
US Classes:264/13By extrusion spraying or gravity fall through orifice
ExaminersPrimary: White, Robert F.
Assistant: Hall, James R.
Attorney, Agent or Firm
International ClassesA61K 9/00 (20060101)
A61K 9/50 (20060101)
Foreign Application Priority Data1974-09-19 JP
AbstractA hollow particulate for gastric medicines and other durable medicines suspendable in the gastric juice and remainable in the stomach for a long period of time is provided which has been prepared by dissolving ethylcellulose in a lower chlorinated hydrocarbon, or a mixed solution of the lower chlorinated hydrocarbon and a lower chlorofluorinated hydrocarbon and/or water, so that the concentration of ethylcellulose is 0.5 - 4% by weight on the basis of the total weight of the resulting solution, and then spray-drying the solution at an inlet temperature of higher than 50° C.