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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.:

US 10144816 B1

PDFFull Text
Date of Patent:
Dec. 04, 2018

Filed:

Jul. 28, 2015

Spherical alumina powder and resin composition using same

Applicant:

Denka Company Limited, Tokyo, JP;

Inventors:

Kazuyoshi Ikeda, Fukuoka, JP;

Motoharu Fukazawa, Tokyo, JP;

Takafumi Komaki, Fukuoka, JP;

Assignee:

DENKA COMPANY LIMITED, Tokyo, JP;

Attorney:

Caesar Rivise, PC

Primary Examiner:

Hoa (Holly) Le

Int. Cl.
CPC ...
B32B 5/16 (2006.01); B05D 7/00 (2006.01); C08K 9/06 (2006.01); C01F 7/02 (2006.01); C08L 101/00 (2006.01); C08K 3/22 (2006.01); C08K 7/18 (2006.01); C09C 1/40 (2006.01); C09K 5/14 (2006.01);
U.S. Cl.
CPC ...
C08K 9/06 (2013.01); C01F 7/02 (2013.01); C01F 7/021 (2013.01); C08K 3/22 (2013.01); C08K 7/18 (2013.01); C08L 101/00 (2013.01); C09C 1/40 (2013.01); C09C 1/407 (2013.01); C09K 5/14 (2013.01); C01P 2004/32 (2013.01); C01P 2004/61 (2013.01); C01P 2004/62 (2013.01); C08K 2003/2227 (2013.01); C08K 2201/001 (2013.01); C08K 2201/003 (2013.01); C08K 2201/005 (2013.01); C08K 2201/016 (2013.01);
Abstract

Provided is a spherical alumina powder which, when incorporated into resins in a high concentration, enables a resin composition to have low viscosity and which has reduced viscosity increase in the resin composition over time after surface treatment of the spherical alumina powder. The spherical alumina powder has an alkyl group(s) derived from a silane compound(s) on its surface, and is characterized in that an intensity ratio {I (CH)/I (CH)} of a peak (2960±5 cm) associated with asymmetric vibration of CHto a peak (2925±5 cm) associated with asymmetric vibration of CHin the alkyl group(s) of the silane compound(s) in the same spectral data obtained by infrared spectroscopic analysis measurement is 0.2 or more and less than 2.0.

Find Patent Forward Citations

Ikeda, Kazuyoshi. (2018). Spherical alumina powder and resin composition using same (U.S. Patent No. 10144816). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10144816

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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