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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 9123893 B1

PDFFull Text
Date of Patent:
Sep. 01, 2015

Filed:

Nov. 25, 2010

Carbon nano-tube dispersant

Applicants:

Masahiro Hida, Funabashi, JP;

Daigo Saito, Funabashi, JP;

Tatsuya Hatanaka, Funabashi, JP;

Inventors:

Masahiro Hida, Funabashi, JP;

Daigo Saito, Funabashi, JP;

Tatsuya Hatanaka, Funabashi, JP;

Assignee:

NISSAN CHEMICAL INDUSTRIES, LTD., Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Edward Cain

Int. Cl.
CPC ...
C08K 3/04 (2006.01); H01L 51/00 (2006.01); B01F 17/00 (2006.01); B82Y 10/00 (2011.01); B82Y 20/00 (2011.01); B82Y 30/00 (2011.01); B82Y 40/00 (2011.01); C01B 31/02 (2006.01); G02B 1/10 (2015.01); C08G 10/00 (2006.01); C08G 10/02 (2006.01); C08G 73/02 (2006.01); C08L 61/00 (2006.01); C08L 79/02 (2006.01); C09D 5/24 (2006.01); C09D 7/12 (2006.01);
U.S. Cl.
CPC ...
H01L 51/0007 (2013.01); B01F 17/005 (2013.01); B82Y 10/00 (2013.01); B82Y 20/00 (2013.01); B82Y 30/00 (2013.01); B82Y 40/00 (2013.01); C01B 31/0273 (2013.01); C08G 10/00 (2013.01); C08G 10/02 (2013.01); C08G 73/026 (2013.01); C08L 61/00 (2013.01); C08L 79/02 (2013.01); C09D 5/24 (2013.01); C09D 7/1291 (2013.01); G02B 1/105 (2013.01); H01L 51/0035 (2013.01); H01L 51/0048 (2013.01); G02B 2207/101 (2013.01);
Abstract

Disclosed is a carbon nano-tube dispersant comprising a highly branched polymer having a repeating unit represented by, for example, formula (12) or (13), wherein the highly branched polymer is produced by the polycondensation of a triarylamine compound and an aldehyde compound and/or a ketone compound in the presence of an acid catalyst. The carbon nano-tube dispersant enables the dispersion of CNTs in a medium such as an organic solvent until the CNTs are so decomposed as to have an individual size. (In the formula, Z1 and Z2 independently represent a hydrogen atom, a phenyl group, a thienyl group, or the like.)

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