EP 0000930 B1 19810701 - N-CARBOXYALKANE-AMINOALKANE-DIPHOSPHONIC ACIDS, N-CARBOXYALKANE-AZACYCLOALKANE-DIPHOSPHONIC ACIDS AND N-CARBOXYALKANE-AMINOARYLKANE DIPHOSPHONIC ACIDS, PROCESS FOR THEIR PREPARATION AND THEIR USE AS SEQUESTERING AGENTS
Title (en)
N-CARBOXYALKANE-AMINOALKANE-DIPHOSPHONIC ACIDS, N-CARBOXYALKANE-AZACYCLOALKANE-DIPHOSPHONIC ACIDS AND N-CARBOXYALKANE-AMINOARYLKANE DIPHOSPHONIC ACIDS, PROCESS FOR THEIR PREPARATION AND THEIR USE AS SEQUESTERING AGENTS
Publication
Application
Priority
DE 2737259 A 19770818
Abstract (en)
[origin: EP0000930A1] 1. Process for the production of N-carboxyalkane-aminoalkane diphosphonic acids, N-carboxy-alkane-azacycloalkane-diphosphonic acids and N-carboxyalkane-aminoaryl-diphosphonic acids of the general Formula I see diagramm : EP0000930,P8,F1 wherein R**1 is a hydrogen atom, or an alkyl radical of formula -(CH2 )xCH3 with x = 0 to 10, or a hydroxy ethyl radical, or a carboxy methyl radical, or a phenyl radical, or an N,N-bis-(carboxyalkyl)-aminoalkyl radical, or a methyl- or ethyl-phosphonic acid radical, or R**1 together with R**2 is an alkylene group with 3 to 5 C-atoms and forms an azacycloalkane ring with the grouping see diagramm : EP0000930,P8,F2 R**2 is a hydrogen atom, or a methyl radical, or the same radical as R**3 , or R**2 together with R**1 is an alkylene group with 3 to 5 C-atoms and forms an azacycloalkane ring with the grouping see diagramm : EP0000930,P8,F3 R**3 is a carboxy-substituted unbranched alkyl radical with the formula (CH2 )m COOH in which m = 1 to 12, or a 2-carboxy-2,2-dimethyl ethyl radical, or a 1,2-dicarboxy-ethyl radical, characterised in that an amino alkane, azacyclo alkane or aminoaryl alkane diphosphonic acid of the general Formula II see diagramm : EP0000930,P8,F4 wherein R**1 is defined as stated in Formula I and R**4 is a hydrogen atom, or a methyl radical, or R**4 together with R**1 is an alkylene group with 3 to 5 C-atoms and forms an azacyclo alkane ring with the grouping see diagramm : EP0000930,P8,F5 is heated with a corresponding unbranched or branched halogen alkane carboxylic acid or halogen succinic acid, its alkali salts, earth alkali salts or alkali-heavy metal salts or its esters in a molar ratio of 1:1 to 1:3 in aqueous medium at a temperature between 50 and 160 degrees C and at a pH value between 4.0 and 12.0 until the reaction is concluded.
IPC 1-7
IPC 8 full level
C02F 5/14 (2006.01); C07F 9/38 (2006.01); C09K 3/00 (2006.01); C07F 9/40 (2006.01); C11D 3/36 (2006.01); G03C 5/305 (2006.01)
CPC (source: EP)
C02F 5/14 (2013.01); C07F 9/3873 (2013.01); G03C 5/3053 (2013.01)
Designated contracting state (EPC)
BE CH DE FR GB LU NL SE
DOCDB simple family (publication)
EP 0000930 A1 19790307; EP 0000930 B1 19810701; AT 369015 B 19821125; AT A602778 A 19820415; CA 1106843 A 19810811; DE 2737259 A1 19790301; DE 2860812 D1 19811008; DK 364478 A 19790219; IE 47653 B1 19840516; IE 781681 L 19790218; IT 1098368 B 19850907; IT 7826633 A0 19780809; JP S5470222 A 19790605
DOCDB simple family (application)
EP 78100697 A 19780817; AT 602778 A 19780818; CA 309547 A 19780817; DE 2737259 A 19770818; DE 2860812 T 19780817; DK 364478 A 19780817; IE 168178 A 19780818; IT 2663378 A 19780809; JP 9957578 A 19780817