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. 21, 1999
Filed:
Feb. 06, 1998
Applicant:
Inventors:
Johannes Adrianus Van Doorn, Amsterdam, NL;
Jozef Jacobus Smits, Amsterdam, NL;
Eric Johannes Vos, Amsterdam, NL;
Assignee:
Shell Oil Company, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C08G / ; C08G / ;
U.S. Cl.
CPC ...
528 86 ; 549 40 ; 549230 ; 568641 ; 568643 ; 568645 ; 568649 ; 528 92 ;
Abstract
Process for the preparation of compound of the formula: ##STR1## wherein R.sub.c represents a residue comprising one or more additional groups of the formula: ##STR2## by heating a compound of the formula (A) ##STR3## at a temperature in the range of from 120 to 220.degree. C. in the presence of hydrogen halide addition salt of tertiary amine;