公开(公告)号：US3649341A

公开(公告)日：1972-03-14

申请号：US3649341D

申请日：1968-11-14

申请人： NESTE OY

发明人： TAMMELA VILJO ,  TURUNEN OLLI

IPC分类号： C08B1/02 ,  C08B3/06 ,  D06M13/188 ,  D06M13/20

CPC分类号： D06M13/188 ,  C08B1/02 ,  C08B3/06

摘要： Partly acetylated regenerated cellulose films or fibers are manufactured by first swelling them in a concentrated and waterfree acetic acid solution of an alkali metal acetate at a temperature ranging between 50* and 140* C. Immediately thereafter and without drying the swelled films or fibers are esterified by an acetic acid anhydride solution containing alkali metal acetate at a temperature ranging between 100* and 170* C.

摘要翻译： 通过在50〜140℃的温度范围内首先在碱金属乙酸盐的浓缩无水乙酸溶液中将其部分地蒸发，制成部分乙酰化的再生纤维素膜或纤维。此后立即不干燥溶胀的膜或纤维 在100-170℃的温度范围内由含有碱金属乙酸盐的乙酸酐溶液酯化。