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:
Apr. 29, 1980
Filed:
Aug. 30, 1978
Roland Darms, Therwil, CH;
Siegfried Wyler, Dornach, CH;
Ciba-Geigy Corporation, Ardsley, NY (US);
Abstract
The compounds according to the invention are polymers, containing imidyl groups and silyl groups, of the formula ##STR1## in which Y.sub.1 and Y.sub.2 are Si-organic radicals, a is an integer from 1 to 50 and Z, Z.sub.1 and Z.sub.2 independently of one another are each divalent organic radicals, but at least one of the radicals Z.sub.1 and Z.sub.2 is a group which contains an unsubstituted or substituted imidyl group. The products according to the invention may be prepared, for example, by a multi-stage reaction of m-phenylenediamine, 5-dimethylmaleimidyl-isophthalic acid dichloride, 3,3'-4,4'-benzophenonetetracarboxylic acid dianhydride and .gamma.-aminopropyl-di-n-propoxymethylsilane in solution. The products are used as adhesion promoters, for example between inorganic solids and organic resins.