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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 9944779 B1

PDFFull Text
Date of Patent:
Apr. 17, 2018

Filed:

Apr. 17, 2015

Resin composition, toner for electrophotography, hot melt composition and ethylene/α-olefin copolymer

Applicant:

Mitsui Chemicals, Inc., Tokyo, JP;

Inventors:

Masakazu Tanaka, Yokohama, JP;

Kuniaki Kawabe, Chiba, JP;

Hirotaka Kanaya, Chiba, JP;

Keiichi Taki, Tokyo, JP;

Yuichi Kaida, Yamaguchi, JP;

Assignee:

MITSUI CHEMICALS, INC., Tokyo, JP;

Attorney:

Foley & Lardner LLP

Primary Examiner:

Irina S Zemel

Assistant Examiner:

Jeffrey S Lenihan

Int. Cl.
CPC ...
C08F 210/16 (2006.01); C08L 101/00 (2006.01); C08L 23/08 (2006.01); C08L 25/04 (2006.01); C08L 67/00 (2006.01); C09J 123/08 (2006.01); G03G 9/087 (2006.01); G03G 9/09 (2006.01);
U.S. Cl.
CPC ...
C08L 23/0815 (2013.01); C08F 210/16 (2013.01); C08L 23/08 (2013.01); C08L 25/04 (2013.01); C08L 67/00 (2013.01); C08L 101/00 (2013.01); C09J 123/0815 (2013.01); C09J 123/0853 (2013.01); G03G 9/087 (2013.01); G03G 9/08704 (2013.01); G03G 9/08711 (2013.01); G03G 9/0904 (2013.01);
Abstract

Provided is a resin composition containing: (A) an ethylene/α-olefin copolymer containing 91.0-99.9 parts by mole of (a) an ethylene-derived unit and 0.1-9.0 parts by mole of (b) a C-Cα-olefin-derived unit (wherein (a)+(b) is 100 parts by mole), while satisfying the requirements (i)-(iv) and (B) a thermoplastic resin and/or a thermosetting resin, wherein the mass ratio (A)/(B) is 0.1/99.9 to 50/50. This resin composition is useful for providing a toner which can be fixed by a relatively-low-temperature heating body and has good offset resistance, and which is suppressed in increase of particle diameters even if the toner is stored for a long time. (i) The Mw is 400 to 1,500. (ii) The Mw/Mn is 1.2 to 2.5. (iii) The penetration measured at 25° C. is 13 dmm or less. (iv) The melting temperature is 50° C. to 110° C.

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