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:
Jul. 25, 2006
Filed:
Jul. 23, 2002
Applicants:
Prasad Y Duggirala, Naperville, IL (US);
James J. Svarz, Naperville, IL (US);
Inventors:
Prasad Y Duggirala, Naperville, IL (US);
James J. Svarz, Naperville, IL (US);
Assignee:
Nalco Company, Naperville, IL (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
D21C 3/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
This invention is a method of reducing the resin content of chemical pulps comprising heating wood chips in an aqueous alkaline medium in the presence of an effective deresinating amount of an alkyl alcohol alkoxylate of formula RO[(CHCHCHO)(CHCHO)]M wherein R is Cto Calkyl; x is 1–50; y is 0–100 and M is H or an alkali metal, a cooking liquor comprising sodium hydroxide and sodium sulfite and the alkyl alcohol alkoxylate and a deresinated pulp prepared according to the method.