Title:
ADDITIVE FOR TREATMENT OF WATER, AND WATER TREATMENT APPARATUS
Document Type and Number:
WIPO Patent Application WO/2010/137579
Kind Code:
A1
Abstract:
Disclosed is an additive (1) which has a tri-layered structure composed of an outer layer (2), an intermediate layer (3) and an inner layer (4) and is formed by solidifying the layers in the form of a tablet, wherein the outer layer (2), the intermediate layer (3) and the inner layer (4) comprise different additive components from one another. The outer layer (2), which has the largest surface area, comprises an additive component having low solubility. The inner layer (4), which has the smallest surface area, comprises an additive component having high solubility. The intermediate layer (3), which is arranged between the outer layer (2) and the inner layer (4), comprises an additive component having solubility intermediate between the solubility of the additive component for the outer layer (2) and the solubility of the additive component for the inner layer (4). The additive (1) can be dissolved in water so that the additive components of the additive (1) can be mixed with water at almost constant concentrations even when the additive (1) is dissolved and the surface area of the additive (1) is decreased.
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Inventors:
KUWABARA MASAKI (JP)
SAKAI AKIRA (JP)
SAKAI AKIRA (JP)
Application Number:
PCT/JP2010/058803
Publication Date:
December 02, 2010
Filing Date:
May 25, 2010
Export Citation:
Assignee:
PANASONIC ELEC WORKS CO LTD (JP)
KUWABARA MASAKI (JP)
SAKAI AKIRA (JP)
KUWABARA MASAKI (JP)
SAKAI AKIRA (JP)
International Classes:
C02F1/68
Domestic Patent References:
| WO1999038950A1 | 1999-08-05 |
Foreign References:
| JP2001191064A | 2001-07-17 | |||
| JPH04284891A | 1992-10-09 | |||
| JPH10508339A | 1998-08-18 | |||
| JPS5983952U | 1984-06-06 | |||
| JPH10174981A | 1998-06-30 | |||
| JPH09122658A | 1997-05-13 |
Attorney, Agent or Firm:
MIYOSHI, Hidekazu et al. (JP)
Hidekazu Miyoshi (JP)
Hidekazu Miyoshi (JP)
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