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. 05, 1991
Filed:
Feb. 27, 1989
Applicant:
Inventor:
Michael Diamantoglou, Erlenbach, DE;
Assignee:
Akzo N.V., Arnhem, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08B / ; C08B / ; C08B / ; C08B / ;
U.S. Cl.
CPC ...
536 56 ; 536 58 ; 536 59 ; 536 61 ; 536 62 ; 536 63 ; 536 64 ; 536 65 ; 536 66 ; 536 67 ; 536 68 ; 536 69 ; 536 81 ; 536 82 ; 536 83 ; 536 84 ; 536 85 ; 536 86 ; 536 88 ; 536 89 ; 536 90 ; 536 91 ; 536 93 ; 536 95 ; 536 97 ; 536 98 ; 536 99 ; 536100 ; 536101 ;
Abstract
A modified cellulose for biocompatible dialysis membranes having a structure represented by the formula ##STR1## wherein cell is cellulose or chitin, in each case without hydroxyl groups, s=3 in the case of cellulose and s=2 in the case of chitin, R' is CH.sub.3 and/or C.sub.2 H.sub.5 and/or C.sub.3 H.sub.7, X denotes specified functional groups, R' is H or R, R'' denotes R, x+t=0.75 to 2.85, t=0 to 2.85, x=0 to 2.85, and r=0 to 1. A process for preparation of the cellulose derivatives is also disclosed.