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:
Mar. 17, 2015
Filed:
Aug. 14, 2007
Applicants:
Masataka Nakanishi, Tokyo, JP;
Katsuhiko Oshimi, Tokyo, JP;
Takao Sunaga, Tokyo, JP;
Inventors:
Assignee:
Nipponkayaku Kabushikikaisha, Tokyo, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07C 43/03 (2006.01); C08G 59/06 (2006.01);
U.S. Cl.
CPC ...
C08G 59/063 (2013.01);
Abstract
This invention provides a modified liquid epoxy resin having a low viscosity and a high performance, which is obtained by reacting a mixture of a bisphenol and a phenol aralkyl resin with an epiholohydrin. The bisphenol is preferable to be bisphenol F and is further preferable to have a bifunctional form purity as detected by gel permeation chromatography at UV 254 nm of not less than 95% by area in view of the fluidity. Moreover, the mixture of bisphenol and the phenol aralkyl resin is preferable to have a ratio of the phenol aralkyl resin of 10-70% by mass.