FIELD: organic chemistry, chemical technology.
SUBSTANCE: invention describes a method for treatment of degraded solvent in manufacturing diene-base solution polymers by treatment of solvent with alkaline agent solution and fractionation. As an alkaline agent method involves using hydrocarbon-solvent alkaline metal phenolates of the general formula: 
wherein Me means potassium (K) or sodium (Na); R1, R2, R3 are α-methylbenzyl, α,α-dimethylbenzyl, (C1-C18)-alkyl or hydrogen atom in any combination as measured for 0.0001-0.5 wt.-% of bound alkaline metal per a solvent. Invention provides effective removing halogen-containing impurities from degraded solvent being up to their complete absence and exclusion corrosion process of fractionation equipment due to creature and maintaining the necessary level of alkalinity in solvent that result to enhancing safety in manufacturing polymers.
EFFECT: improved method for treatment.
4 tbl, 6 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PURIFICATION OF THE RETURN SOLVENT | 2018 |
|
RU2683093C1 |
| METHOD OF PURIFICATION OF THE RETURN SOLVENT | 2017 |
|
RU2648754C1 |
| METHOD OF PURIFICATION OF THE RETURN SOLVENT | 2017 |
|
RU2663295C1 |
| METHOD OF REGENERATION OF RETURN SOLVENT IN PROCESS FOR PREPARING SYNTHETIC RUBBERS | 2000 |
|
RU2176648C2 |
| RECYCLED SOLVENT TREATMENT METHOD | 0 |
|
SU567727A1 |
| PROCESS FOR PREPARING BUTADIENE-STYRENE RUBBERS | 1994 |
|
RU2071483C1 |
| METHOD OF RECYCLING RECYCLED SOLVENT USED IN PRODUCTION OF ISOPRENE RUBBER FROM ISOPRENE EXTRACTED FROM PYROLYSIS FRACTION C5 | 2023 |
|
RU2825337C1 |
| METHOD OF PRODUCING COMMERCIAL ACETONE WITH HIGH RESISTANCE TO OXIDATION | 1998 |
|
RU2167144C2 |
| METHOD OF FREEING PHENOL FROM ACETOL | 2004 |
|
RU2260579C1 |
| METHOD OF SYNTHESIS OF BUTADIENE-STYRENE RUBBER | 2001 |
|
RU2200740C1 |
