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:
Oct. 25, 2016
Filed:
Jul. 19, 2012
Ram Gupta, Stamford, CT (US);
Irina Kobylanska, Stamford, CT (US);
Urvee Treasurer, Stamford, CT (US);
Lawrence Flood, Norwalk, CT (US);
Ram Gupta, Stamford, CT (US);
Irina Kobylanska, Stamford, CT (US);
Urvee Treasurer, Stamford, CT (US);
Lawrence Flood, Norwalk, CT (US);
Allnex IP S.ar.L., Luxembourg, LU;
Abstract
The invention relates to a process for the synthesis of cyclic alkylene ureas comprising reacting in the presence of a basic catalyst, a difunctional amine A having two primary amino groups, and an aliphatic organic carbonate component C selected from the group consisting of dialkyl carbonates CD and of alkylene carbonates CA, wherein the ratio of the amount of substance Ji(—NH2) of primary amino groups —NH2 in the difunctional amine A to the sum M(C) of the amount of substance n(CD) of carbonate groups of a dialkyl carbonate CD and the amount of substance n(CA) of carbonate groups in an alkylene carbonate CA, is at least more than 2, and to the product obtained by this process.