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:
Feb. 08, 2000
Filed:
Jul. 17, 1998
Johannes Petrus Beerepoot, Amsterdam, NL;
Johannes Jozias Blom, Amsterdam, NL;
Feike De Jong, Amsterdam, NL;
Wilhelmina Johanna Van Der Linden-Lemmers, Amsterdam, NL;
Willem Sjardijn, Amsterdam, NL;
Virgilius Christiaan Van Liempd, Amsterdam, NL;
Paulus Egidius Raas, The Hague, NL;
Shell Oil Company, Houston, TX (US);
Abstract
The invention provides for a process for the preparation of an advanced epoxy resin by reaction of a compound having on average more than one epoxy group per molecule and a compound having on average one or more hydroxyl group or carboxyl group per molecule in the presence of a catalyst at elevated temperature, the process comprising (1) mixing the epoxy compound, the hydroxyl compound or the carboxyl compound and the catalyst, and (2) transferring the mixture as a feedstream to a surface exposed to an elevated temperature sufficient to produce an advanced epoxy resin which is at least intermittently moving with respect to the feedstream. In a preferred embodiment an endless conveyer belt with additional heating means and optional cooling means are used.