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:
Mar. 23, 1982
Filed:
Apr. 17, 1981
Applicant:
Inventors:
Otto Smerz, Kelkheim, DE;
Thomas Martini, Bad Soden am Taunus, DE;
Siegfried Billenstein, Burgkirchen, DE;
Klaus Adrian, Frankfurt am Main, DE;
Assignee:
Hoechst Aktiengesellschaft, , DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D06L / ; C11D / ;
U.S. Cl.
CPC ...
8107 ; 8111 ; 252186 ;
Abstract
A process for the bleaching of cellulose in an alkaline peroxide bleaching bath in the presence of a compound of the formula ##STR1## wherein R is C.sub.6 -C.sub.22 -alkyl, C.sub.6 -C.sub.22 -alkenyl or C.sub.6 -C.sub.22 -alkylaryl, n is a number of from 5 to 50, and X is ethylene or propylene; the ether chain (X-O).sub.n consisting entirely of ethoxy units or contains n/5 isopropoxy units at most.