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. 15, 1978
Filed:
Apr. 20, 1977
Applicant:
Inventor:
Klaus Schrage, Konigswinter, DE;
Assignee:
Dynamit Nobel Aktiengesellschaft, Troisdorf, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
2603 / ; 2603 / ; 2602 / ;
Abstract
A method is provided for the preparation of 2-arylbenzoxazoles and 2-arylbenzthiazoles which comprises reacting a trichloromethyl-substituted aromatic compound with an aromatic compound carrying one amino group and one hydroxy or mercapto group in ortho position to each other. The compounds obtained by the process of the invention form the basis of numerous optical brighteners and find use in dyes, cosmetics, pharmaceuticals and heat-resistant fibers.
Schrage, Klaus. (1978). Method of preparing 2-aryl benzoxazoles and 2-aryl benzothiazoles (U.S. Patent No. 4107169). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4107169
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile