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:
May. 16, 2000
Filed:
Jul. 10, 1997
Andreas Wenning, Nottuln, DE;
Felix Schmitt, Herten, DE;
Huels Aktiengesellschaft, Marl, DE;
Abstract
Pulverulent compounds of outstanding thermal stability and solvent resistance are provided which are based on epoxy resins having more than one 1,2-epoxide group and one or more hydroxyl groups in the resin molecular chain, curing agents and optionally, one or more conventional auxiliaries and additives, wherein the curing agents contain one or more polyisocyanates which are blocked with inert blocking agents and with cyclic amidines of the general formulae I and/or II ##STR1## wherein R is as described herein, at an OH:NCO ratio of from 1 -0.1 to 1:1, the content of cyclic amidine in bound form is from 2 to 9% by mass, based on the epoxy resin employed, and the hardener contains from 0.9 to 0.3 mol of inert blocking agents and from 0.1 to 0.6 mol of cyclic amidines per NCO group, the preparation of these pulverulent compounds and their use as one-component adhesives.