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:
Jul. 17, 1990
Filed:
Jul. 24, 1989
Applicant:
Inventors:
Assignee:
Korea Chemical Co., Ltd., Kyungsangnam, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
525476 ; 525102 ; 525105 ; 525403 ; 525474 ;
Abstract
A suspension or emulsion polymerization process for the preparation of modified resin useful as a low-stress semiconductor encapsulant which comprises reacting a silicone oil or a silicone resin an having at least two silanol groups or hydrolyzable alkoxy groups with a silane coupling agent having at least two hydrolyzable alkoxy groups to form a suspension or emulsion of a reactive intermediate product, azeotropically distilling the resulting suspension or emulsion to produce a distrilled intermediate product, and adding an epoxy resin or a phenol resin to the distilled intermediate product to produce a matrix having insoluble and infusible spherical particles.