A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PROCESS FOR THE PREPARATION OF POLYOXYALKYLENE AMINOPHOSPHONIC DISPERSING AGENTS
Disclosed is a process for the preparation of compounds of formula (I) wherein R1 is C1-C4 alkoxy; R2 is hydrogen or a group of formula —CH2—PO3H2 or is a group of formula R1-O—(CH2—CH2O)n—CH2—CH2—; R3 is an alkylene, optionally substituted with one or more —NR2-groups; R4 and R5 are both a group of formula —CH2—PO3H2 or one of them is a group of formula —CH2—PO3H2 and the other is a group of formula R1-O—(CH2—CH2—O)-CH2-CH2-; n is an integer between 4 and 50; which comprises: a) reacting a compound of formula R1-O—(CH2—CH2—O)n—CH2—CH2—OH with SOCl2 or a similar reagent to give a compound of formula R1-O—(CH2—CH2—O)n—CH2—CH2—Cl; b) reacting the compound obtained in a) with an amine of formula NH2—R3′-NH2 wherein R3′ is an alkylene optionally substituted with one or more —NH-groups; c) reacting the compound obtained in b) with formaldehyde and phosphorous acid.
PROCESS FOR THE PREPARATION OF POLYOXYALKYLENE AMINOPHOSPHONIC DISPERSING AGENTS
Disclosed is a process for the preparation of compounds of formula (I) wherein R1 is C1-C4 alkoxy; R2 is hydrogen or a group of formula —CH2—PO3H2 or is a group of formula R1-O—(CH2—CH2O)n—CH2—CH2—; R3 is an alkylene, optionally substituted with one or more —NR2-groups; R4 and R5 are both a group of formula —CH2—PO3H2 or one of them is a group of formula —CH2—PO3H2 and the other is a group of formula R1-O—(CH2—CH2—O)-CH2-CH2-; n is an integer between 4 and 50; which comprises: a) reacting a compound of formula R1-O—(CH2—CH2—O)n—CH2—CH2—OH with SOCl2 or a similar reagent to give a compound of formula R1-O—(CH2—CH2—O)n—CH2—CH2—Cl; b) reacting the compound obtained in a) with an amine of formula NH2—R3′-NH2 wherein R3′ is an alkylene optionally substituted with one or more —NH-groups; c) reacting the compound obtained in b) with formaldehyde and phosphorous acid.
PROCESS FOR THE PREPARATION OF POLYOXYALKYLENE AMINOPHOSPHONIC DISPERSING AGENTS
VERFAHREN ZUR HERSTELLUNG EINES POLYOXYALKYLENAMINOPHOSPHON-DISPERGIERMITTELS
PROCÉDÉ DE PRÉPARATION D'AGENTS DISPERSANTS DE TYPE POLYOXYALKYLÈNE AMINOPHOSPHONIQUE
PALADINI MASSIMO (author) / ROZZONI ANGELA (author) / BELLOTTO MAURIZIO (author) / MARCHESI MARCO (author)
2016-06-08
Patent
Electronic Resource
English
IPC:
C08G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
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Makromolekulare Verbindungen, anders erhalten als durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
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C04B
Kalk
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LIME
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C09K
Materialien für Anwendungen, soweit nicht anderweitig vorgesehen
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MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR
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