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:
Jun. 18, 1991
Filed:
Nov. 16, 1988
Applicant:
Inventors:
Yohzoh Yamamoto, Chiba, JP;
Goro Suzuki, Chiba, JP;
Hideo Nakamura, Chiba, JP;
Kiyomi Yasuda, Chiba, JP;
Assignee:
Mitsui Petrochemical Industries, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08L / ; C08G / ; C08G / ;
U.S. Cl.
CPC ...
525109 ; 525113 ; 525114 ; 525116 ; 525117 ; 525118 ; 525119 ; 525120 ; 525122 ; 525481 ; 528 98 ; 528 99 ; 528100 ; 528102 ; 528104 ; 528112 ; 528113 ; 528114 ; 528115 ; 528118 ; 528119 ; 528120 ; 528121 ; 528122 ; 528123 ; 528124 ; 528327 ; 528367 ; 528407 ; 430109 ; 430137 ; 430280 ; 430965 ;
Abstract
An epoxy resin comprising an active hydrogen compound having at least three active hydrogen atoms capable of reacting with an epoxy group in its molecule or butadine or isoprene as a main monomer is modified with an oligomer having on average at least 1.5 equivalents of active hydrogen capable of reacting with an epoxy group in its molecule. An epoxy resin modified with a bisphenol and a compound having active hydrogen or acid anhydride groups capable of reacting with an epoxy group is also provided. A toner containing the epoxy resin as a binder is useful in electrostatography.