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:
Jul. 11, 1989
Filed:
Jun. 19, 1987
Josef Pfeifer, Therwil, CH;
Rudolf Duthaler, Bettingen, CH;
Ciba-Geigy Corporation, Ardsley, NY (US);
Abstract
Compounds containing at least 5 mol % of structural units of the formulae I and/or II ##STR1## in which Q is an unsubstituted or substituted tetravalent aromatic radical to which in each case two carbonyl groups are bonded in the ortho- or peri-position, R.sup.1 is selected from the radicals of the formulae III, IV and V ##STR2## R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are hydrogen, alkyl, cycloalkyl or substituted or unsubstituted aryl or aralkyl, R.sup.6 and R.sup.7 are aryl or halogen, m and n are 0, 1 or 2 and o is 0, 1, 2, 3 or 4, are described. The compounds are distinguished by an increased resistance to oxidation by heat. They can be used to produce coatings and relief structures.