Title:
ホスホノアルキルイミノ二酢酸の製造のための方法
Document Type and Number:
Japanese Patent JP5687280
Kind Code:
B2
Abstract:
An improved method for the manufacture of phosphonoalkyl iminodiacetic acid M2PO3—X—N—(CH2COOM)2 wherein X is a C1-6 linear or branched alkyl group; and M is selected from hydrogen, alkali, earth-alkali, ammonium and protonated amine is disclosed. The iminodiacetic acid starting material is reacted with a substantially stoichiometric amount of phosphorous acid, in the presence of a large excess of phosphoric acid to thereby yield a reaction medium insoluble reaction product (PAI-DA) which can be separated from the reaction medium. In a particularly preferred approach, the phosphorous acid is prepared in situ starting from liquid P4O6.
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Inventors:
ノッテ パトリック
レミン ダヴィッド
ピラルド セドリック ニコラス
レミン ダヴィッド
ピラルド セドリック ニコラス
Application Number:
JP2012535799A
Publication Date:
March 18, 2015
Filing Date:
October 27, 2010
Export Citation:
Assignee:
ストレイトマーク・ホールディング・アーゲー
International Classes:
C07F9/38
Attorney, Agent or Firm:
Spring water Original aim
Masao Haruna
Hirotaka Yamaguchi
Shun Osakabe
Ryuichi Inoue
Toshimitsu Sato
Koichi Niimi
Tomohiko Kobayashi
Shin-ichi Watanabe
Masato Ozeki
Yoshihiro Igarashi
Kazuya Kawamoto
Masao Haruna
Hirotaka Yamaguchi
Shun Osakabe
Ryuichi Inoue
Toshimitsu Sato
Koichi Niimi
Tomohiko Kobayashi
Shin-ichi Watanabe
Masato Ozeki
Yoshihiro Igarashi
Kazuya Kawamoto