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:
Jan. 12, 1988
Filed:
Sep. 16, 1985
Applicant:
Inventor:
Shui-Tung Chiu, Coquitlam, CA;
Assignee:
Borden Company Limited, West Hill, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07G / ;
U.S. Cl.
CPC ...
530502 ;
Abstract
A process for modifying spent sulfite liquor by reacting the liquor with a phenolic compound in the presence of an oxidizing agent is disclosed. The phenolic compound-modified spent sulfite contains 4%-25% reacted phenolic compound based on the dry weight of the original spent sulfite liquor. The modified liquor also contains a reduction in the sugars content and sulfonic acid groups of at least 20% each over the original liquor. The modified spent sulfite liquor is suitable for use in thermosetting resin formulations.