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:
Dec. 29, 1981
Filed:
Feb. 25, 1980
Applicant:
Inventors:
Robert H Fox, Elgin, IL (US);
Roger H Kottke, Crystal Lake, IL (US);
James E Menting, Algonquin, IL (US);
R Bruce Sampsell, Chicago, IL (US);
Assignee:
The Quaker Oats Company, Chicago, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22C / ; B22C / ; C08K / ; C08L / ;
U.S. Cl.
CPC ...
260 / ; 260 4243 ; 26099818 ;
Abstract
Foundry sand mixes comprising a mixture of sand, binder, and hydrogen peroxide are improved with respect to bench life by the addition thereto, at the time of initial preparation of the mixture, of non-catalyzing amounts, but stabilizing amounts, of certain iron chelating agents which are acid or salts of acids selected from those which, in their free acid form, have an acidic pH less than 3.0 when dissolved at 1 percent weight per weight in water or when saturated in water, whichever is lower in concentration.