FIELD: chemical industry; methods of production of the linear dimmers of a-methylsterene.
SUBSTANCE: the invention is pertaining to the methods of production of the linear dimmers of a-methylsterene, which are used in the capacity of the modifiers in production of polymers. The method is exercised by dimerization of α- methylsterene in the presence of zeolite Y with the molar ratio of SiO2/Al2O3 = 6.2, with the stage of the ionic exchange of Na+ for Н+ - 40÷60 % containing 0.5÷2.0 mass % of copper (II). The catalyst amount makes 1÷4 mass %, the temperature of the reaction is 80÷100°С. The output of the dimmers compounds - 92.8÷94.8 % at conversion of the raw of 96.3÷99.4 %. The technical result of the invention is the raise of the selectivity of formation and output of the linear unsaturated dimmers of α- methylsterene.
EFFECT: the invention ensures the increased selectivity of formation and output of the linear unsaturated dimmers of α- methylsterene.
9 ex, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR PREPARING LINEAR DIMERS OF α-METHYLSTYRENE | 2006 |
|
RU2313511C1 |
| METHOD OF OBTAINING LINEAR DIMERS OF α-METHYLSTYRENE | 2006 |
|
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| LINEAR ALPHA-METHYLSTYRENE DIMERS' PRODUCTION PROCESS | 2006 |
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| PROCESS OF PRODUCING LINEAR α-METHYLSTYRENE DIMERS | 2006 |
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| METHOD FOR COMBINED SYNTHESIS OF LINEAR AND CYCLIC HOMO- AND CODIMERS OF STYRENE AND ALPHA-METHYLSTYRENE | 2010 |
|
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| METHOD FOR COMBINED SYNTHESIS OF LINEAR CYCLIC HOMO- AND CODIMERS OF STYRENE AND α-METHYLSTYRENE | 2010 |
|
RU2424221C1 |
| METHOD OF PRODUCING CYCLIC HOMO- AND CO-DIMERS OF STYRENE AND ALPHA-METHYLSTYRENE | 2010 |
|
RU2430079C1 |
| METHOD OF SYNTHESIS OF UNSATURATED DIMERS OF ALPHA-METHYLSTYRENE | 2001 |
|
RU2189964C1 |
| METHOD OF PRODUCING HOMO- AND CO-OLIGOMERS OF Α-METHYLSTYRENE AND ISOPENTENES IN THE PRESENCE OF HIERARCHICAL ZEOLITE H-YMMM | 2020 |
|
RU2735666C1 |
| PROCESS OF PRODUCING LINEAR STYRENE DIMMER (TRANS-1,3-DIPHENYLBUTENE-1) | 2006 |
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RU2317284C1 |
