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:
May. 18, 1976
Filed:
Mar. 22, 1974
Ulrich Pintschovius, Hattersheim, DT;
Erich Schinzel, Hofheim, Taunus, DT;
Gunter Rosch, Altenhain, Taunus, DT;
Hoechst Aktiengesellschaft, Frankfurt am Main, DT;
Abstract
Compounds of the formula ##SPC1## Wherein R' is carboxy, lower carboalkoxy or lower carboalkoxy substituted by lower dialklamino or lower trialkylammonium and Ar is phenyl substituted by cyano, carboxy or lower carboalkoxy. These compounds show a characterized fluorescence when dissolved and are suitable for the optical brightening of different organic materials such as lacquers or synthetic fibres, for example fibres made of acetyl cellulose, polyesters, polyolefines, polyvinyl chloride or polyvinylidene chloride and films, foils, ribbons or shaped articles made from these materials.