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. 03, 2014
Filed:
Jun. 17, 2011
Joanna Mecfel-marczewski, Altenmarkt an der Alz, DE;
Burkhard Walther, Garching, DE;
Jochen Mezger, Garching an der Alz, DE;
Radoslaw Kierat, Altenmarkt, DE;
Rosita Staudhamer, Babensham, DE;
Joanna Mecfel-Marczewski, Altenmarkt an der Alz, DE;
Burkhard Walther, Garching, DE;
Jochen Mezger, Garching an der Alz, DE;
Radoslaw Kierat, Altenmarkt, DE;
Rosita Staudhamer, Babensham, DE;
Construction Research & Technology GmbH, Trostberg, DE;
Abstract
Proposed are 2-oxo-1,3-dioxolane-4-carboxylic acid and derivatives thereof, according to the following formula, in which Rrepresents a negative charge, hydrogen or can be preferably Me or Et or a radical having a valency of 2 to 5, which is substituted with an amount of further 2-oxo-1,3-dioxolane-4-carboxyl groups equal to the radical valency minus 1, as well as a process for their preparation by means of carboxylation of the corresponding epoxides, a process for their transesterification and their use for the preparation of hydroxyurethanes and as end groups for the blocking of amines.