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:
Mar. 23, 1982
Filed:
Oct. 27, 1980
Applicant:
Inventors:
Paul Zuppinger, Arlesheim, CH;
Dieter Baumann, Rheinfelden, CH;
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G08G / ;
U.S. Cl.
CPC ...
528 91 ; 528 92 ; 528110 ; 528112 ; 528115 ; 528361 ; 528365 ; 528281 ; 528297 ; 264281 ; 264297 ;
Abstract
The invention relates to a process in which, as essential components, liquid epoxy resins, carboxylic anhydrides, zinc fluoroborate complex compounds, water, tetrahydropyrane and compounds (X) which contain OH groups, COOH groups or both groups together, are reacted. Selective choice of the special quantity ratios results in reaction mixtures which, at low temperature (e.g. at 100.degree. C.), require only short moulding times and have a sufficiently long pot life. As the reaction is only slightly exothermic, the process can be used very advantageously for encapsulating electronic components.