FIELD: chemistry.
SUBSTANCE: invention relates to polysiloxanes which can be used as heat-resistant materials in different industries. Polymethyl(phenetyl)siloxanes of general formula (I) 
where n=100-1000, are disclosed. Said compounds are obtained via hydrolytic polycondensation of methyl(phenetyl)dichlorosilane with potassium hydroxide solution (KOH), followed by neutralisation of the hydrolysate and condensation thereof with hexamethylcyclotrisilazane at 100-150°C for 6-10 hours.
EFFECT: disclosed polymers have high heat resistance and good reproducibility of thermophysical properties.
1 cl, 1 tbl, 4 ex
| Title | Year | Author | Number |
|---|---|---|---|
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|
RU2458942C1 |
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|
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|
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| METHOD OF PRODUCING METHYL(PHENETHYL)DICHLOROSILANE | 2010 |
|
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|
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| POLYMETHYL(HEXAFLUOROALKYL)SILOXANES FOR THERMO- AND OIL-BENZO-STABLE MATERIALS | 1995 |
|
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|
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