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:
Sep. 18, 1990
Filed:
Jan. 30, 1990
Applicant:
Inventors:
Stephen J Harris, Dublin, IE;
John G Woods, Dublin, IE;
John M Rooney, Basking Ridge, NJ (US);
Marueen G MacManus, Dublin, IE;
John Guthrie, Naas, IE;
Assignee:
Loctite (Ireland) Ltd., Dublin, IE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08K / ;
U.S. Cl.
CPC ...
524243 ; 524244 ; 524265 ; 524481 ; 524366 ; 524370 ; 524375 ; 524376 ; 524288 ; 524289 ; 524290 ; 524292 ; 524383 ; 524391 ; 524385 ; 524482 ; 524487 ; 524488 ; 524523 ; 524533 ; 525474 ; 525477 ;
Abstract
An encapsulating composition for electronic devices comprises a curable material such as a silicone resin and an ion scavenger compound selected from certain calixarene or oxacalixarene compounds in which at least half of the phenolic groups have been substituted by specific groups and certain silacrown compounds. Exemplary ion scavenger compounds include ##STR1## the tetraethyl acetate of 7, 13, 19, 25-tetra-tertbutyl-27, 28, 29, 30-tetrahydroxy-2,3-dihomo-3-oxacalix-4-arene and 1,1-dimethasila-17-crown-6.