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. 18, 1997
Filed:
Apr. 10, 1996
Applicant:
Inventors:
Chia-hung Chen, Dublin, OH (US);
James T Schneider, Dublin, OH (US);
Assignee:
Ashland Inc., Columbus, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ; B22C / ; B22C / ;
U.S. Cl.
CPC ...
524590 ; 524589 ; 523139 ; 523142 ;
Abstract
This invention relates to polyurethane-forming cold-box binders and foundry mixes prepared with these binders. The binder comprises a polyol component and an organic polyisocyanate component. Foundry mixes are prepared by mixing the binder with a foundry aggregate. Foundry shapes (molds and cores) are prepared by shaping the mix and curing the foundry shape with a gaseous tertiary amine curing catalyst.