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:
Jan. 25, 2000
Filed:
Feb. 28, 1998
Applicant:
Inventors:
Chia-hung Chen, Dublin, OH (US);
Ken K Chang, Dublin, OH (US);
Albert Leonard Haugse, Dublin, OH (US);
Thomas E Dando, Sunbury, OH (US);
Assignee:
Ashland Inc., Columbus, OH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B22C / ;
U.S. Cl.
CPC ...
523143 ; 523145 ;
Abstract
This invention relates to a polyurethane no-bake foundry binder comprising (1) phenolic resin component which comprises (a) a phenolic resin, (b) hydrofluoric acid, and (c) a silane, and (2) an organic polyisocyanate component, and (3) a liquid tertiary amine catalyst component. The binders are used to prepare foundry mixes by mixing the binder with a foundry aggregate. Foundry shapes are prepared with the mixes by the no-bake process and are used to cast metal parts.