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:
Aug. 27, 1985
Filed:
Aug. 28, 1984
Applicant:
Inventors:
Stamatis M Kambanis, Toronto, CA;
Antoine Berchem, Rosemere, CA;
Dennis Gregoire, Laval, CA;
Jaroslav Rybicky, Brampton, CA;
Assignee:
Reichhold Limited, Ontario, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08H / ;
U.S. Cl.
CPC ...
527403 ; 524735 ;
Abstract
An improved modified phenol-formaldehyde resin, and a process for its preparation, which contains lignosulfonates is described. Typically, the lignosulfonates are in the form of black liquor. These resins are made by including with the phenol a small amount of potassium ferricyanide. Unlike the known processes utilizing black liquors and the like, this process appears to be far less susceptible to the inherent variability of these liquors. These resins can be easily converted into a solid by spray drying, and find use as adhesives, for example in board products.