发明名称 |
PROCESS FOR THE PREPARATION OF POLYOXYALKYLENE AMINOPHOSPHONIC DISPERSING AGENTS |
摘要 |
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. |
申请公布号 |
EP2836536(A2) |
申请公布日期 |
2015.02.18 |
申请号 |
EP20130721272 |
申请日期 |
2013.04.09 |
申请人 |
GIOVANNI BOZZETTO S.P.A. |
发明人 |
PALADINI, MASSIMO;ROZZONI, ANGELA;BELLOTTO, MAURIZIO;MARCHESI, MARCO |
分类号 |
C08G65/333;C04B24/24;C08G65/335 |
主分类号 |
C08G65/333 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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