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:
Jul. 06, 2010
Filed:
May. 28, 2004
Björn Antelmann, Zurich, CH;
Sylvia Huber, Altenmarkt, DE;
Thomas Güthner, Trostberg, DE;
Alzchem Trostberg GmbH, Trostberg, DE;
Abstract
A description is given of the use of asymmetrically substituted urea derivatives of the general formula (I) where Rand Reach independently are a linear or branched aliphatic hydrocarbon radical having 1 to 4 carbon atoms as accelerators in combination with dicyandiamide as latent hardener for epoxy resin systems based on unhalogenated or halogenated bisphenols of type A or F and also based on resorcinol or tetrakisphenylolethane. The advantages of the inventively proposed accelerator/hardener combination are, for example, the excellent reactivity and very good storage stability. Moreover, the mechanical properties of the resins cured accordingly are likewise outstanding.