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| Number | Title | Issue Date |
| 5378827 | Process for the production of cellulose carbamate A process for the production of cellulose carbamate from cellulose and urea through the conversion of the cellulose with excess urea in an inert liquid organic reaction carrier at a temperature in the range of 130 ° to 160° C., separation of the reactio... | 01/03/1995 |
