Process for the transformation of a comminuted swellable cellulose ether into an easily workable material
AssigneeHoechst Aktiengesellschaft
InventorsLudwig Grosse, Hans-Werner Dorr
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Abstract
This invention relates to an improvement in the process for the transformation of comminuted cellulose ether, which has been rendered at least largely water-insoluble by modification, but which is still highly swellable with water, into an easily workable material, in which process the modified cellulose ether is attached to a hydrophilic support web, the improvement comprising dispersing the modified cellulose ether in a solution of unmodified cellulose ether in an organic solvent, coating the support on at least one of its surfaces with the dispersion, and then drying.
Claims8
In the process for the transformation of comminuted cellulose ether, which has been rendered at least largely water-insoluble by modification, but which is still highly swellable with water, into an easily workable material, in which process the modified cellulose ether is attached to a hydrophilic support web,
- the improvement comprising dispersing the modified cellulose ether in a solution of unmodified cellulose ether in an organic solvent, coating the support on at least one of its surfaces with the dispersion and then drying.
Dependencies are inferred from the claim text.