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US 5,470,519 AGranted
Method of manufacturing a cellulosic article containing an olefinic oxide polymer
AssigneeViskase Corporation
InventorJohn Markulin
Life of this patent
Estimating the term…
Abstract
A method of manufacturing a cellulosic article of cellulose or a cellulose derivative that has incorporated a polyethylene oxide composition having a molecular weight of at least 70,000.
Claims12
A method of manufacturing an olefin oxide polymer containing cellulosic article comprising:
- (a) adding at least 0.5 percent by weight of an olefinic oxide polymer having a molecular weight of at least 70,000 to viscose;
- (b) extruding, coagulating and regenerating the olefin oxide polymer containing viscose of step (a) into an article.
A method of manufacturing an olefinic oxide polymer containing cellulosic article comprising dissolving an olefinic oxide polymer having a weight average molecular weight of at least 70,000 in a liquid solution of cellulose or a cellulose derivative followed by forming an article.
Dependencies are inferred from the claim text.