The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 07, 2015
Filed:
Apr. 09, 2013
Giovanni Bozzetto S.p.a., Bergamo, IT;
Massimo Paladini, Bergamo, IT;
Angela Rozzoni, Mapello, IT;
Maurizio Bellotto, Milan, IT;
Marco Marchesi, Bagnatica, IT;
GIOVANNI BOZZETTO S.P.A., Bergamo, IT;
Abstract
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 —CH—POHor is a group of formula R1-O—(CH—CHO)—CH—CH—; R3 is an alkylene, optionally substituted with one or more —NR2-groups; R4 and R5 are both a group of formula —CH—POHor one of them is a group of formula —CH—POHand the other is a group of formula R1-O—(CH—CH—O)-CH-CH-; n is an integer between 4 and 50; which comprises: a) reacting a compound of formula R1-O—(CH—CH—O)—CH—CH—OH with SOClor a similar reagent to give a compound of formula R1-O—(CH—CH—O)—CH—CH—Cl; b) reacting the compound obtained in a) with an amine of formula NH—R3'-NHwherein R3′ is an alkylene optionally substituted with one or more —NH-groups; c) reacting the compound obtained in b) with formaldehyde and phosphorous acid.