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:
Jul. 20, 2004
Filed:
Sep. 19, 2002
Applicant:
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08K 3/10 ; C08L 6/302 ;
U.S. Cl.
CPC ...
C08K 3/10 ; C08L 6/302 ;
Abstract
An epoxy resin that contains, in a molecule, two mesogens coupled by a folded chain, is provided using a method that ensures easy synthesis of such an epoxy resin, and a uniform epoxy resin composition is provided based on this epoxy resin. The epoxy resin includes a major compound having a structure expressed by the Chemical Formula (1), and a method is provided for manufacturing the epoxy resin by reaction of (A) an epoxy resin with one mesogen contained in a molecule and (B) a compound with two elements of active hydrogen contained in a molecule, with the percentage composition of (B) active hydrogen with respect to (A) epoxy group being 0.25 and over, up to and including 0.7.