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. 02, 1997
Filed:
Aug. 30, 1996
Applicant:
Inventors:
Hou-Min Chang, Raleigh, NC (US);
Hasan Jameel, Raleigh, NC (US);
Junfu Song, Raleigh, NC (US);
Dingru Pan, Beijing, CN;
Bijan Amini, Moorestown, NJ (US);
John Robert Webster, Wilmington, DE (US);
Bruce A Evans, Hockessin, DE (US);
Assignees:
North Carolina State University, Raleigh, NC (US);
E. I. Du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21C / ;
U.S. Cl.
CPC ...
162 76 ; 162 78 ; 162 95 ; 162 99 ; 8107 ; 8111 ;
Abstract
A process for treating a substrate, e.g., lignocellulosic pulp or cellulosic pulps, with a mixed peracid solution comprising percarboxylic acid and Caro's acid which results in a higher conversion rate of the active oxygen in the hydrogen peroxide in order to provide an inexpensive and effective delignification and/or bleaching solution and the process for making the mixed peracid solution.