FIELD: organic chemistry, chemical technology. SUBSTANCE: method involves dimerization of α-methylstyrene at 35-60 C, stirring at linear rate 80 cm/s, not less, in the presence of 1.8-3.0 mas. p. 80-90-% sulfuric acid solution (as measured for 100% acid from monomer) feeding at the rate 0.3-0.5 mas. p./h at continuous blowing with nitrogen at the rate 100 l/h. The synthesized compound is used for plastics production as plasticizing agents or high-temperature heat carriers. EFFECT: increased yield of cyclic saturated alpha-methylstyrene dimer, simplified method, decreased cost. 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| PLASTICIZER FOR POLYSTYRENE AND COPOLYMERS THEREOF | 1994 |
|
RU2089570C1 |
| METHOD FOR PRODUCTION OF UNSATURATED DIMER OF $$$-METHYL STYRENE | 1993 |
|
RU2071460C1 |
| 1,1,3-TRIMETHYL-3-PHENYLINDANE PRODUCTION PROCESS | 2006 |
|
RU2317969C2 |
| METHOD OF SYNTHESIS OF UNSATURATED ALPHA-METHYLSTYRENE DIMER FOR CONTROL OF POLYMERIC CHAIN INCREMENT | 1999 |
|
RU2149862C1 |
| 1,1,3-TRIMETHYL-3-PHENYLINDANE PREPARATION METHOD | 2002 |
|
RU2223937C1 |
| METHOD OF PRODUCING CYCLIC HOMO- AND CO-DIMERS OF STYRENE AND ALPHA-METHYLSTYRENE | 2010 |
|
RU2430079C1 |
| PROCESS FOR PREPARING LIQUID ALPHA-METHYLSTYRENE DIMERS | 1991 |
|
RU2082707C1 |
| METHOD FOR PREPARING LINEAR α-METHYLSTYRENE DIMERS | 2006 |
|
RU2313512C1 |
| METHOD OF SYNTHESIS OF LOW-MOLECULAR POLYSTYRENE | 1992 |
|
RU2050368C1 |
| METHOD OF SYNTHESIS OF UNSATURATED DIMERS OF ALPHA-METHYLSTYRENE | 2001 |
|
RU2189964C1 |
