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. 13, 1982
Filed:
Apr. 04, 1980
Applicant:
Inventors:
Krishan K Sudan, Ste-Therese, CA;
Antoine Berchem, St. Hippolyte, CA;
Assignee:
Reichhold Limited, Ontario, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ; C08H / ; C08J / ; B01J / ;
U.S. Cl.
CPC ...
264 13 ; 524 74 ;
Abstract
Modified phenol-formaldehyde resins, and processes for their preparation, are described wherein board or paper pulping process waste liquor is used as the modifier. The resins may contain, based on solids contents of both resin and waste liquor, from 1:10 to 10:1 parts by weight. These resins are cheaper than conventional resins and also use the waste-liquor without any purification step.