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:
Apr. 26, 2005
Filed:
Feb. 14, 2002
Applicants:
Chia-hung Chen, Dublin, OH (US);
Jorg Kroker, Hilliard, OH (US);
Inventors:
Chia-hung Chen, Dublin, OH (US);
Jorg Kroker, Hilliard, OH (US);
Assignee:
Ashland Inc., Dublin, OH (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B22C001/22 ; B22C009/00 ;
U.S. Cl.
CPC ...
Abstract
This invention relates to polyisocyanate compositions comprising (a) polyisocyanate, and (b) a monomeric carbodiimide. The polyisocyanate compositions are particularly useful in phenolic urethane foundry binder systems. The invention also relates to foundry mixes prepared with (a) a phenolic urethane binder containing the polyisocyanate composition, and (b) a foundry aggregate, as well as foundry shapes prepared by the no-bake and cold-box processes, which are used to make metal castings.