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:
Feb. 05, 2019
Filed:
Aug. 02, 2017
Applicant:
E Ink Corporation, Billerica, MA (US);
Inventors:
Ziyan Wu, Wayland, MA (US);
Jason D. Feick, Auburndale, MA (US);
Assignee:
E Ink Corporation, Billerica, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 471/04 (2006.01); C09D 11/52 (2014.01); C09D 11/107 (2014.01); C08F 120/18 (2006.01); C09D 5/24 (2006.01); G02F 1/167 (2006.01); C09D 4/00 (2006.01); C09D 11/033 (2014.01); C09D 11/037 (2014.01); C09B 48/00 (2006.01); C09B 69/10 (2006.01); C09D 5/44 (2006.01);
U.S. Cl.
CPC ...
C09B 69/109 (2013.01); C07D 471/04 (2013.01); C08F 120/18 (2013.01); C09B 48/00 (2013.01); C09D 4/00 (2013.01); C09D 5/24 (2013.01); C09D 5/4411 (2013.01); C09D 11/033 (2013.01); C09D 11/037 (2013.01); C09D 11/107 (2013.01); C09D 11/52 (2013.01); G02F 1/167 (2013.01); G02F 2001/1678 (2013.01);
Abstract
Quinacridone pigments that are surface-functionalized with glycidyl methacrylate, maleic anhydride, or 4-methacryloxyethyl trimellitic anhydride to create a functionalized pigment. The functional groups are then activated to bond hydrophobic polymers, thereby coating the pigment with the hydrophobic polymers. The quinacridone pigments can be used for a variety of applications. They are well-suited for use in electro-optic materials, such as electrophoretic media for use in electrophoretic displays.