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:
Sep. 30, 1980
Filed:
Aug. 07, 1978
Applicant:
Inventors:
Michel Baudouin, Saint-Fons, FR;
Jean Abblard, Saint-Didier-au-Mont-d'Or, FR;
Assignee:
Rhone-Poulenc Industries, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
26032626 ; 2603 / ; 2603 / ; 2603 / ; 2603 / ; 2603 / ; 2603 / ; 2603 / ; 2603 / ; 546256 ; 546272 ; 546281 ; 548143 ; 548153 ; 548181 ; 548193 ; 548267 ; 548328 ; 528170 ; 528345 ;
Abstract
N-substituted oligo-imides of the formula: ##STR1## in which D represents a divalent radical selected from the group comprising: ##STR2## in which m is 0 or 1, Y is hydrogen, chlorine or methyl, n is a positive integer of 5 or less, and R is an organic radical of valency n, containing up to 50 carbon atoms, are prepared by reacting an anhydride of the formula: ##STR3## with an amine of the formula: