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. 27, 1998
Filed:
Jan. 22, 1996
Applicant:
Inventor:
Khalid Rasheed, Missouri City, TX (US);
Assignee:
Witco Corporation, Greenwich, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21C / ;
U.S. Cl.
CPC ...
510174 ; 510413 ; 510506 ; 252 60 ; 252 61 ; 162-4 ;
Abstract
Enhanced removal of ink in the froth flotation deinking of waste paper is provided by carrying out the flotation with one or more dialkoxylates of certain cyclohexenyl diacids, one or more alkoxylates of C.sub.2-12 polyhydric alcohols, or a mixture thereof. Improved performance is also provided by adding one or more alkyl diglyceryl disulfonates, C.sub.8 to C.sub.18 alpha-olefin sulfonates and/or alkyl ether sulfates.