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:
Sep. 05, 2000
Filed:
Nov. 12, 1998
Applicant:
Inventors:
Blair Alex Owens, Fairfield, OH (US);
Dimitris Ioannis Collias, Mason, OH (US);
Andrew Julian Wnuk, Wyoming, OH (US);
Assignee:
The Proctor & Gamble Company, Cincinnati, OH (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08G / ; C08G / ; C08G / ;
U.S. Cl.
CPC ...
525420 ; 525 544 ; 528332 ; 528397 ; 528403 ; 528423 ; 528492 ; 162167 ; 1621682 ;
Abstract
The strength of lignocellulosic materials is improved by treating them with water-soluble strengthening agents containing sulfonic units, and rendering these agents water-insoluble by reacting them with compounds containing azetidinium rings. Thus, a substantial reduction or elimination of the bleeding of said strengthening agents from the lignocellulosic materials when touched with wet hands or contacted under humid conditions is achieved.