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:
Mar. 14, 1978
Filed:
Jul. 14, 1976
Applicant:
Inventors:
Kashinath S Sardessai, Whitefish Bay, WI (US);
Jordan J Kopac, Franksville, WI (US);
Assignee:
Delta Oil Products Corporation, Milwaukee, WI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08G / ; B22C / ; C08K / ;
U.S. Cl.
CPC ...
260 / ; 164 43 ; 252182 ; 260 / ; 260 / ; 260 / ; 260 / ; 260D / ; 260 / ; 260 / ;
Abstract
An improved binder resin is disclosed for use in a foundry process, comprising a major proportion of a resole phenolic resin and a minor proportion of a polyether polyol and a mutual solvent therefor, wherein the polyol has an average molecular weight between about 200 and 5000 and a hydroxy functionality of about 2 to 4. The improved binder is used in the foundry process by mixing it with a polyisocyanate and preferably an amine catalyst.