FIELD: chemistry.
SUBSTANCE: invention relates to a method for synthesis of di-(β-chloroethyl)formal, which is the basic material in synthesis of polysulphide oligomers (thiocols), capable of cold curing to obtain sealants with unique properties. Method involves reacting ethylene chlorohydrin with formaldehyde in molar ratio (2.25-2.7):1, in the presence of dry gaseous hydrogen chloride as an acid catalyst with subsequent azeotropic distillation of the reaction water in the presence of 1,2-dichloroethane as a resolving agent.
EFFECT: method enables to obtain an end product with high output and selectivity.
6 cl, 1 tbl, 12 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCING TERT-BUTYLHYPOCHLORITE | 2010 |
|
RU2446146C2 |
| METHOD FOR PRODUCTION OF 1,2-DICHLOROETHANE OR 1,1,2- TRICHLOROETHANE | 1988 |
|
SU1832672A1 |
| METHOD OF THE VACUUM RECTIFICATION OF ETHYLENE CHLOROHYDRIN | 2004 |
|
RU2277082C1 |
| METHOD OF PRODUCING 2,2'-DICHLORODIETHYLFORMAL | 2013 |
|
RU2522332C1 |
| METHOD OF SYNTHESIS OF 1,2-DICHLOROETHANE | 1992 |
|
RU2072974C1 |
| METHOD OF ISOLATION OF 1-(2-CHLOROETHYL)-PYRIDINIUM TETRACHLOROFERRATE FROM REACTION MASS OBTAINED BY CHLORINATION OF ETHYLENE WITH CHLORINE IN THE PRESENCE OF 1-(2-CHLOROETHYL)-PYRIDINIUM TETRACHLOROFERRATE AS A CATALYST | 1991 |
|
RU2035446C1 |
| PROCESS FOR PREPARATION OF POLYSULPHIDE | 2014 |
|
RU2662433C2 |
| PROCESS FOR CLEANING DICHLOROETHANE OF CHLOROPRENE | 1992 |
|
RU2061668C1 |
| METHOD OF ETHRIOL OBTAINING | 2014 |
|
RU2560156C1 |
| METHOD FOR PROCESSING OF HIGH-BOILING BY-PRODUCTS OF TRIMETHYLPROPANE PRODUCTION PROCESS | 2016 |
|
RU2616004C1 |
