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:
Apr. 12, 2016
Filed:
Nov. 14, 2012
Construction Research & Technology Gmbh, Trostberg, DE;
Heimo Woelfle, Traunstein, DE;
Burkhard Walther, Garching, DE;
Maximilian Köhler, Trostberg, DE;
Sophie Putzien, Ampfing, DE;
Construction Research & Technology GmbH, Trostberg, DE;
Abstract
The present invention suggests 2-oxo-1,3-dioxolane-4-carboxamides of formula (I), in which Rcan be, inter alia, an n-valent radical (n>1) which is substituted with n−1 further 2-oxo-1,3-dioxolane-4-carboxamide groups of general formula (II), to processes for the preparation of these 2-oxo-1,3-dioxolane-4-carboxamides, to processes for the preparation of the 2-oxo-1,3-dioxolane-4-carboxylic acids of formula (III), which are suitable starting materials for the above processes, and to the use of said 2-oxo-1,3-dioxolane-4-carboxamides for the preparation of (poly)hydroxyurethanes, -hydroxycarbonates and -hydroxysulfanylformates, and also as end groups for the blocking of amines.