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. 27, 2021
Filed:
Nov. 28, 2017
Applicant:
Namics Corporation, Niigata, JP;
Inventors:
Ayako Sato, Niigata, JP;
Masashi Kajita, Niigata, JP;
Assignee:
NAMICS Corporation, Niigata, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09J 7/30 (2018.01); C09C 1/30 (2006.01); C01B 33/18 (2006.01); C09J 11/04 (2006.01); H01L 23/29 (2006.01);
U.S. Cl.
CPC ...
C09C 1/309 (2013.01); C01B 33/181 (2013.01); C01B 33/186 (2013.01); C09C 1/3045 (2013.01); C09C 1/3063 (2013.01); C09C 1/3081 (2013.01); C09J 7/30 (2018.01); C09J 11/04 (2013.01); H01L 23/295 (2013.01); C01P 2004/32 (2013.01); C09J 2203/326 (2013.01);
Abstract
The present invention provides a surface-treated silica filler for suppressing an increase in viscosity when added to a resin composition used for applications such as a semiconductor sealing material, and the resin composition containing the surface-treated silica filler. The surface-treated silica filler of the present invention is surface-treated with a basic substance having an acid dissociation constant (pKa) of its conjugate acid of 9.4 or more.