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:
Jun. 24, 2025
Filed:
Dec. 16, 2019
Univerzita Pardubice, Polabiny, CZ;
Aleš Ruzicka, Choltice, CZ;
Roman Olejník, Drenice, CZ;
Univerzita Pardubice, Polabiny, CZ;
Abstract
The present invention describes method of preparation of amides of lactyl lactates of general formula I, where Z denotes to group of RR′—N and R represent alkyl, aryl or H from lactide and the lactide reacts with an aliphatic or aromatic amine with 1 to 100 carbon atoms of general formula RR′NH or with an aliphatic or aromatic ammonium hydrohalide with 1 to 100 carbon atoms of general formula RR′NH·HX, where X is selected from Cl, Br and I in a non-chlorinated organic aliphatic or aromatic solvent or in a melted mixture of lactide under solvent free condition, and when lactide reacts with amine, initiator derived from group of Lewis acids of halides of 4., 12., 13., and 14. group is added.