FIELD: chemistry.
SUBSTANCE: present invention relates to a method of phosphorylation of technical lignins and their derivatives and can be used in making insecticides. The proposed method involves successive treatment of air-dried sodium and potassium lignates with phosphorous thiotrichloride for 5 to 30 minutes with intense stirring and simultaneous grinding in a vibro reactor at 20 to 80°C without a solvent, and then with alkali metal alcoholates with intense stirring and simultaneous grinding for 10 to 40 minutes at the same temperature, in molar ratio of phosphorylation reagents equal to 1:1 per 1 mole of OH groups of lignin.
EFFECT: design of a new method of phosphorylation of lignins.
1 cl, 32 ex, 6 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PHOSPHORYLATION OF TECHNICAL LIGNINS AND THEIR DERIVATIVES WITH O,O-DIALKYLTHIO-PHOSPHORIC ACID HALOGENANHYDRIDES | 2000 |
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