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:
Nov. 07, 2000
Filed:
Mar. 25, 1998
Ronald Petrus Van Gaalen, Amsterdam, NL;
Petrus Gerardus Kooijmans, Amsterdam, NL;
Eric Johannes Vos, Amsterdam, NL;
Shell Oil Company, Houston, TX (US);
Abstract
A linear or branched polyglycidylester resin produced by reacting a carboxyl functional polyester resin with an excess epihalohydrin in the presence of a suitable base, wherein the carboxyl functional polyester resin is produced by reacting at a temperature of from 100 to 240.degree. C. at least one dicarboxylic acid compound of the formula ##STR1## wherein x.gtoreq.1 and wherein R.sub.1 and R.sub.2 each represent an alkyl group having from 1 to 4 carbon atoms or wherein R.sub.1 and R.sub.2 form together with the group .about.CH--(CH.sub.2).sub.x --CH.about. a cycloalkylgroup, with at least one diol compound comprising two aliphatic hydroxyl groups, wherein each hydroxyl group independently is a primary or a secondary hydroxyl group, and wherein the number of carboxylic acid groups and anhydrides thereof exceeds the number of hydroxyl groups. The reaction continues until essentially all the hydroxyl groups initially present in the reaction mixture have been reacted.