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:
Feb. 11, 1997
Filed:
Nov. 19, 1993
Akira Yoshida, Aichi, JP;
Naoki Kyochika, Aichi, JP;
Tsutomu Tanaka, Aichi, JP;
Katsumi Matsuyama, Aichi, JP;
Kazuhiko Kiuchi, Aichi, JP;
Kao Corporation, Tokyo, JP;
Abstract
A foundry mold is produced from sand by blending, with one another, sand, a binder comprising a ester cured-phenolic resin, a curing agent comprising an organic ester compound and one or more additives containing therein a metal of the groups IB to VIII, and molding and curing the mixture into a foundry mold. The mixture is useful in a self-curing molding method and a vapour curing molding method, and the resulting mold is thereby provided with an unexpected improved mechanical strength. In particular the invention is advantageously effective with used or reclaimed refractory sand.