发明名称 |
FOERFARANDE FOER FRAMSTAELLNING AV CELLULOSAKARBAMATER. |
摘要 |
1. A method of producing cellulose carbamates by impregnating cellulose-containing material with an aqueous solution containing alkali metal hydroxide and urea, heating the impregnated cellulose-containing material to form the cellulose carbamates as well as separating non reacted urea and by-products, characterized in that the material impregnated with alkali metal hydroxide and urea is washed with urea-containing water one or several times prior to heating. |
申请公布号 |
FI853871(L) |
申请公布日期 |
1986.04.10 |
申请号 |
FI19850003871 |
申请日期 |
1985.10.07 |
申请人 |
LENZING AKTIENGESELLSCHAFT |
发明人 |
GRIESSER, HERBERT;JESZENSZKY, THOMAS;WEINROTTER, KLAUS;JURKOWITSCH, RAIMUND |
分类号 |
C08B3/14;C08B15/06 |
主分类号 |
C08B3/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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