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:
Dec. 14, 1999
Filed:
Feb. 06, 1998
Applicant:
Inventors:
Jozef Jacobus Smits, Amsterdam, NL;
Judith Johanna Walhof, Amsterdam, NL;
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07D / ; C08G / ;
U.S. Cl.
CPC ...
528219 ; 528 95 ; 528214 ; 549518 ; 568641 ; 568643 ; 568645 ; 568649 ;
Abstract
Process for the preparation of compounds of the formula ##STR1## wherein Hal represents chlorine, bromine or iodine and preferably chlorine, wherein R.sub.a represents hydrogen or a residue comprising one or more additional groups of the formula, ##STR2## from compounds ##STR3## wherein R.sub.2 represents hydrogen or a residue comprising one or more additional groups of the formula ##STR4## by reaction with gaseous hydrogen halide in the presence of a catalytic amount of an organic acid. Epoxy resins are prepared via the reaction of a compound of formula (A) in the presence of a basic compound.