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. 08, 1990
Filed:
Oct. 14, 1988
Applicant:
Inventors:
Arthur J Lostumo, Franklin Park, IL (US);
Bernard M Wiltgen, Villa Park, IL (US);
Assignee:
Zenith Electronics Corporation, Glenview, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08K / ; C08K / ; B05D / ;
U.S. Cl.
CPC ...
523220 ; 523440 ; 523443 ; 523457 ; 524906 ; 427386 ;
Abstract
An epoxy resin composition, especially useful as an encapsulant and exhibiting a low dissipation factor, is prepared from a first component comprising an epoxy of a polyglycidal ether of a polyhydroxyl phenol and filler, and a second component comprising a cycloaliphatic acid anhydride curing agent, filler and catalyst. Each component is mixed separately under high shear, and the filler for each component comprises at least about 50 percent by weight. The two components are admixed, applied as an encapsulant, and cured at an elevated temperature.