Giovanni Bozzetto S.p.a.

Marco Marchesi

Massimo Paladini

Maurizio Bellotto

Angela Rozzoni

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 &#x2014;CH&#x2014;POHor is a group of formula R1-O&#x2014;(CH&#x2014;CHO)&#x2014;CH&#x2014;CH&#x2014;; R3 is an alkylene, optionally substituted with one or more &#x2014;NR2-groups; R4 and R5 are both a group of formula &#x2014;CH&#x2014;POHor one of them is a group of formula &#x2014;CH&#x2014;POHand the other is a group of formula R1-O&#x2014;(CH&#x2014;CH&#x2014;O)-CH-CH-; n is an integer between 4 and 50; which comprises: a) reacting a compound of formula R1-O&#x2014;(CH&#x2014;CH&#x2014;O)&#x2014;CH&#x2014;CH&#x2014;OH with SOClor a similar reagent to give a compound of formula R1-O&#x2014;(CH&#x2014;CH&#x2014;O)&#x2014;CH&#x2014;CH&#x2014;Cl; b) reacting the compound obtained in a) with an amine of formula NH&#x2014;R3'-NHwherein R3&#x2032; is an alkylene optionally substituted with one or more &#x2014;NH-groups; c) reacting the compound obtained in b) with formaldehyde and phosphorous acid.

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Bagnatica, Italy

Marco Marchesi