| 摘要 |
FIELD: production of carboxymethyl cellulose (CMC) sodium salt useful as thickening agent and emulsifier in paper, textile and petroleum industry. ^ SUBSTANCE: claimed method includes cellulose treatment with sodium hydroxide aqueous solution to produce alkali cellulose, wherein in sodium hydroxide aqueous solution (100 mass pts) low molecular polyether based on ethylene oxide or propylene oxide (1.0-2.5 mass pts) is introduced and for cellulose treatment sodium hydroxide aqueous solution in concentration of 19.5-23.0 % at temperature 50-60°C is used, and process is carried out for 2.5-3.0 h at 30-45°C. ^ EFFECT: CMC aqueous solutions with decreased viscosity. ^ 4 cl, 1 tbl, 8 ex |
