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:
Sep. 11, 2001
Filed:
Sep. 23, 1999
Applicant:
Inventor:
Michael J. Skoglund, Dublin, OH (US);
Assignee:
Ashland Inc., Dublin, OH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B22C 1/22 ;
U.S. Cl.
CPC ...
B22C 1/22 ;
Abstract
This invention relates to polyurethane-forming foundry binder systems comprising a phenolic resin component and a polyisocyanate component, where the polyisocyanate component contains an ortho ester. The invention also relates to foundry mixes prepared from the binder and an aggregate, as well as foundry shapes prepared by the no-bake and cold-box processes. The foundry shapes are used to make metal castings.