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:
Aug. 14, 1984
Filed:
Nov. 01, 1982
Applicant:
Inventors:
Bernhard Schulte, Krefeld, DE;
Wolfgang Jakob, Moers, DE;
Willi Dunwald, Leverkusen, DE;
Karl-Heinrich Meyer, Krefeld, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
548310 ; 536 23 ; 544 60 ; 544 82 ; 544139 ; 544296 ; 544322 ; 544336 ; 544357 ; 544370 ; 546210 ; 546256 ; 546278 ; 548101 ; 548110 ; 548309 ; 548311 ; 548313 ;
Abstract
This invention relates to a process for the production of compounds containing at least one (thio)-hydantoin ring in the molecule by reacting a carbodiimide with hydroxy- or mercapto-succinic acid diesters corresponding to the following general formula: ##STR1## wherein R.sup.4 and X are as defined in the description.