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:
May. 28, 2013
Filed:
Aug. 27, 2008
Hiroshi Matsuoka, Ichihara, JP;
Kazuya Sakata, Ichihara, JP;
Hiroyuki Takei, Kamagaya, JP;
Kenji Uchiyama, Odawara, JP;
Ichirou Sasaki, Chiba, JP;
Hiroshi Matsuoka, Ichihara, JP;
Kazuya Sakata, Ichihara, JP;
Hiroyuki Takei, Kamagaya, JP;
Kenji Uchiyama, Odawara, JP;
Ichirou Sasaki, Chiba, JP;
Mitsui Chemicals, Inc., Minato-Ku, Tokyo, JP;
Abstract
Provided is a binder resin for color toners which comprises at least a carboxyl group-containing vinyl resin (C), a glycidyl group-containing vinyl resin (E) and a reaction product thereof, wherein the storage modulus G' at 160 degrees centigrade is not less than 20 and less than 800 Pa measured at a frequency of 6.28 rad/sec, the tetrahydrofuran (THF) soluble portion in the binder resin has a main peak in the molecular weight region of not less than 20,000 and less than 40,000 in the molecular weight distribution measured by gel permeation chromatography (GPC), and the binder resin contains at least one of releasing agents having a melting point of not lower than 60 and not higher than 120 degrees centigrade in an amount of not less than 3.5 and not more than 12 mass % based on 100 mass % of the total amount of the carboxyl group-containing vinyl resin (C), the glycidyl group-containing vinyl resin (E) and a reaction product thereof.