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:
Nov. 25, 1997
Filed:
Jul. 09, 1996
Tamotsu Ishida, Fujieda, JP;
Masatoshi Yamoto, Fujieda, JP;
Sumitomo Bakelite Company Limited, Tokyo, JP;
Abstract
The present invention provides a phenolic resin molding material high in flowability and heat stability in the molten state and excellent in curability at high temperatures which contains (a) a high ortho-novolak type phenolic resin having a number-average molecular weight of 350-500 and an ortho-bond/para-bond ratio of 1.5-2.5, (b) hexamethylene-tetramine, (c) a low-molecular polyolefin compound and (d) a filler. This phenolic resin molding material can further contain a crystalline phenolic compound having two or more benzene rings and/or a monohydric aliphatic alcohol to further improve the flowability, heat stability and curability.