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. 05, 2005
Filed:
Jun. 04, 2002
Giampiero Morini, Padua, IT;
Yuri Gulevich, Ferrara, IT;
Marco Fachini, Padua, IT;
Giansiro Prini, Rovigo, IT;
Antonio Cristofori, Rovigo, IT;
Giampiero Morini, Padua, IT;
Yuri Gulevich, Ferrara, IT;
Marco Fachini, Padua, IT;
Giansiro Prini, Rovigo, IT;
Antonio Cristofori, Rovigo, IT;
Bassell Poliolefine Italia S.p.A., Milan, IT;
Abstract
A process for the preparation of alkylidene substituted succinates comprising a step (a) in which is carried out the reaction of a carbonilic compound, a succinic and a base in a reaction medium and a step (b) in which the alkylidene substituted product obtained in (a) is esterified, characterized in that the succinic ester is used in a molar amount substantially equal to, or lower than, the amount of compound carbonilic compound, (ii) the base is used in a molar amount substantially equal to the succinic ester and is selected from metal hydrides and metal and alkoxides, and (iii) the reaction medium comprises an aprotic liquid medium or a protic liquid medium having a Ka, measured in water, lower than that of iPrOH.