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:
Oct. 12, 1976
Filed:
Dec. 06, 1974
Rolf Schmid, Gelterkinden, CH;
Friedrich Lohse, Oberwil, CH;
Willy Fatzer, Bottmingen, CH;
Hans Batzer, Arlesheim, CH;
Ciba-Geigy Corporation, Ardsley, NY (US);
Abstract
Adducts containing epoxide groups, which have been (so-called) 'advanced' with polyesters containing rings are obtained by reacting adducts containing epoxide groups, which have been obtained by reaction of certain long-chain aliphatic polyesters with diepoxide compounds in excess, with polyesterdicarboxylic acids, containing carbocyclic or heterocyclic rings, while heating, 0.3 - 0.5 carboxyl group equivalent of the polyester-dicarboxylic acid containing rings being employed per 1 epoxide equivalent of the adduct containing epoxide groups. Curing of the (so-called) 'advanced' adducts containing epoxide groups gives flexible moulded materials which are distinguished, in particular, by high tear propagation resistance.