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:
Jan. 04, 2011
Filed:
Jul. 27, 2006
Takashi Akutagawa, Hirakata, JP;
Tsuyoshi Izumi, Kyoto, JP;
Takashi Akutagawa, Hirakata, JP;
Tsuyoshi Izumi, Kyoto, JP;
Sanyo Chemical Industries, Ltd., Kyoto, JP;
Abstract
The present invention relates to core-shell resin particles (C2) each comprising one or more film-like shell layers (P) comprising a first resin (a) and a core layer (Q) comprising a second resin (b). The core-shell resin particle (C2) is characterized in that the weight ratio between (P) and (Q) is from 0.1:99.9 to 70:30, the volatile content in the resin particle (C2) is not more than 2 weight %, and the resin (a) has an initial softening temperature of 40 to 270° C., a Tg of 20 to 250° C., a flow temperature of 60 to 300° C., and the difference of the Tg and the flow temperature in a range of 0 to 120° C. The resin particles are excellent in electrostatic property, thermal storage stability and thermal properties, and exhibit a narrow particle diameter distribution.