| 摘要 |
FIELD: fibrous materials. ^ SUBSTANCE: invention relates to method for production of fibrous semi-finished product with antibacterial properties, containing no heavy metals and useful in production of sanitary, domestic and hygienic paper as well as domestic articles (spoons, fogs, plates cups, etc.). Waste paper mass or mixture thereof with craft hardwood or coniferous cellulose is treated with potassium permanganate in amount of 0.1-0.5 % based on mass of dry cellulose in acidic medium using sulfur acid in amount of 3.1-18.6 % at 20-40°C until total reagent is absorbed. ^ EFFECT: semi-finished product of improved quality due to increased hygienic properties. ^ 2 tbl, 25 ex |
