Gradual-releasing capsule and method for manufacturing the same

Details Gradual-releasing capsule and method for manufacturing the same Gradual-releasing capsule and method for manufacturing the same

1998-07-30

2000-12-26

Le, H. Thi

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Particulate matter

B32B 516

Patent

active

061656151

ABSTRACT:
A gradual releasing capsule having large mechanical strength, a large grain size and excellent gradual-releasability and its production method are disclosed. The capsule comprises a polymer core body containing a hydrophobic oil and a shell body formed of a cured body with which the surface of the core body is covered. The capsule is produced by dripping a core body-forming composition containing a hydrophobic oil and a reactive monomer and a curable polymer-containing solution from a multiple nozzle into a coagulating solution to form a primary capsule and then polymerizing the reactive monomer in the primary capsule.

REFERENCES:
patent: 3870542 (1975-03-01), Ida et al.
patent: 3872023 (1975-03-01), Baum et al.
patent: 4428869 (1984-01-01), Munteau et al.
patent: 5204121 (1993-04-01), Bucheler et al.
patent: 5512753 (1996-04-01), Thomson et al.
patent: 5770222 (1998-06-01), Unger et al.

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