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:
Aug. 28, 2018
Filed:
Feb. 20, 2015
Construction Research & Technology, Gmbh, Trostberg, DE;
Sophie Putzien, Ampfing, DE;
Burkhard Walther, Taching am See, DE;
Maximilian Kohler, Trostberg, DE;
Construction Research & Technology, GmbH, Trostberg, DE;
Abstract
2-hydroxyethyl 2-oxo-1,3-dioxolane-4-carboxylates of formula (I): wherein one of Rand Rcan be hydrogen. Rand R, if not hydrogen, and in each case independently of one another, are selected from straight-chain, branched or cyclic C-alkyl groups, preferably C-alkyl groups, C-aryl groups, C-aralkyl groups and C-alkaryl groups, wherein Rand/or R, in each case independently of one another, may comprise at least one additional functional group, selected from hydroxyl groups, ether groups, ester groups, epoxy groups, and double bonds, and wherein Rmay be substituted with up to 10, preferably with 1 to 5, and in particular with 1 or 2 further 2-hydroxyethyl 2-oxo-1,3-dioxolane-4-carboxylic groups. The 2-hydroxyethyl 2-oxo-1,3-dioxolane-4-carboxylates can be prepared by reacting 2-oxo-1,3-dioxolane-4-carboxylic acid with epoxides and can be used for the preparation of hydroxyurethanes through reaction with amines, such as amine hardeners. Moreover, they can also be used as end groups for the blocking of amines.