FIELD: chemistry.
SUBSTANCE: invention relates to a method of producing chloromethylated polystyrene which can be used in organic synthesis when producing ion-exchange resins and selective membranes. Method of producing chloromethylated polystyrene involves first reacting linear polystyrene with formals in thionyl chloride in the presence of a catalyst – tin tetrachloride for 0.1–0.75 hours at 0–10 °C. Reaction mass is then washed with carbon tetrachloride and subsequent hot extraction with anhydrous alcohol. 1,3-dioxolane is used as a formal. Molar ratio of polystyrene : 1,3-dioxolane : tin (IV) tetrachloride is 1:(2–6):(0.02–0.1).
EFFECT: invention significantly reduces the amount of reagents used – cyclic formal, catalyst, organic solvent, and obtain chloromethylated polystyrene with high degree of chloromethylation.
1 cl, 4 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR PRODUCING CROSSLINKED CHLOROMETHYLATED POLYSTYRENE | 2021 |
|
RU2755720C1 |
| METHOD FOR PRODUCING A SUPER-CROSSLINKED POLYSTYRENE | 2021 |
|
RU2780484C1 |
| METHOD FOR PREPARING 4-CHLOROMETHYL-1,3-DI- OXALANE | 2001 |
|
RU2218339C2 |
| TREATMENT OF COMPOSITION CONTAINING TRIMETHYLOLALKANE BIS(MONOLINEAR) FORMAL | 2000 |
|
RU2247704C2 |
| METHOD OF OBTAINING WATER-SOLUBLE POLYELECTROLYTE | 0 |
|
SU1366518A1 |
| ANIONITE WITH AMINOGROUPES FOR WATER TREATMENT AND METHOD OF ITS PRODUCTION | 2016 |
|
RU2663290C2 |
| PROCESS FOR PREPARING ANIONITES | 1997 |
|
RU2127283C1 |
| PHTHALOCYANINE CHLOROMETHYLATION METHOD | 2009 |
|
RU2405785C1 |
| 2-ISOPROPYL-4-[(FURYL-2)METHYLENOXY)METHYLENE-1,3- DIOXOLANE CAPABLE OF ACTIVATING GERMINATING WHEAT SEEDS AND INCREASING RESISTANCE OF PLANTULES TO WATER STRESS | 1999 |
|
RU2152942C1 |
| BIO- AND HEME-COMPATIBLE SORBENTS BASED ON SUPER-CROSS-LINKED STYRENE POLYMERS WITH MODIFIED SURFACE, METHOD OF PREPARATION THEREOF (VERSIONS), AND METHOD OF PREPARING SORBENT MATRIX | 1996 |
|
RU2089283C1 |
