Title:
金属捕集剤
Document Type and Number:
Japanese Patent JP4029994
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a metal scavenger having low toxicity to organism and capable of safely treating waste water and solid waste by forming a metal- scavenging functional group with a substituent bonded to nitrogen atom in a skeleton having a structure obtained by the polycondensation of a reaction product of a nitrogen-containing compound having substitutable active hydrogen atom bonded to nitrogen atom with a vinyl ester. SOLUTION: A metal-scavenging functional group (e.g. dithio-acid group and alkylene phosphate group) is formed with a substituent bonded to a nitrogen atom in a skeleton having a structure obtained by the polycondensation of a material produced by reacting a nitrogen-containing compound having preferably >=3 substitutable active hydrogen atoms bonded to nitrogen atom (e.g. aminoethylethanolamine) with a vinyl ester (e.g. methyl acrylate). For example, the dithio-acid group can be introduced by substituting an active hydrogen atom bonded to a nitrogen atom of a polycondensation product by reacting the above polycondensation product with carbon disulfide.
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Inventors:
Kazuo Hosoda
Toshi Takeuchi
Koji Kawai
Katsuyuki Sugiyama
Masafumi Moriya
Toshi Takeuchi
Koji Kawai
Katsuyuki Sugiyama
Masafumi Moriya
Application Number:
JP25195698A
Publication Date:
January 09, 2008
Filing Date:
August 21, 1998
Export Citation:
Assignee:
Miyoshi Oil & Fat Co., Ltd.
International Classes:
B09B3/00; B09C1/02; C09K3/00; B09C1/08; C22B3/44
Domestic Patent References:
| JP55089321A | ||||
| JP55084310A | ||||
| JP62081478A | ||||
| JP1099679A |
Attorney, Agent or Firm:
Isamu Hosoi