FOERFARANDE FOER FRAMSTAELLNING AV LOESLIGA CELLULOSADERIVATER

摘要

PCT No. PCT/FI82/00069 Sec. 371 Date Aug. 30, 1983 Sec. 102(e) Date Aug. 30, 1983 PCT Filed Dec. 30, 1982 PCT Pub. No. WO83/02278 PCT Pub. Date Jul. 7, 1983.The present invention concerns a procedure for producing cellulose carbamate from cellulose and urea. To avoid alkali treatment of the cellulose used as starting material with a view to decreasing the degree of polymerization of the cellulose, the cellulose in web form is exposed to a radiation dose of preferably 0.5 to 10 Mrad from a radiation source, whereafter the cellulose is reacted with urea at elevated temperature.