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 |
|---|---|---|---|
| POLYMETHYL(PHENETHYL)METHYLPHENYLSILOXANES AND METHOD FOR PRODUCTION THEREOF | 2023 |
|
RU2827996C1 |
| POLYMETHYLALKYL[METHYL(PHENETYL)]SILOXANES FOR HEAT-, FROST-RESISTANT MATERIALS | 2011 |
|
RU2458942C1 |
| SILOXANE BLOCK-COPOLYMERS CONTAINING METHYL (HEXAFLUOROALKYL) SILOXANE LINKS | 2014 |
|
RU2563253C1 |
| BIS-(N,N-DIETHYLAMINO)(PHENETHYL)METHYLSILANES AS AGENTS FOR CONDENSATION OF PHENYL-CONTAINING LOW-MOLECULAR SILOXANES | 2023 |
|
RU2827998C1 |
| POLYDIMETHYLMETHYL(HEXAFLUOROALKYL)SILOXANES FOR HEAT-, OIL- AND PETROL-RESISTANT MATERIALS | 2013 |
|
RU2527968C1 |
| METHOD OF PRODUCING POLYORGANOSILOXANES | 2011 |
|
RU2463319C1 |
| METHOD OF PRODUCING METHYL(PHENETHYL)DICHLOROSILANE | 2010 |
|
RU2453551C2 |
| POLYMETHYL(HEXAFLUOROALKYL)SILOXANES FOR THERMO- AND OIL-BENZO-STABLE MATERIALS | 1995 |
|
RU2078097C1 |
| OLIGOMETHYL-ALKYL (METHYLHYDROXY) (METHYLHYDROPEROXY) SILOXANES AS ANTISTRUCTURING ADDITIVES AND VULCANISING AGENTS FOR SILOXANE CAOUTCHOUCS AND METHOD OF THEIR PRODUCTION | 2006 |
|
RU2336285C2 |
| METHOD OF OBTAINING OLIGOORGANOSILOXANES | 2014 |
|
RU2556639C1 |
