FIELD: chemistry.
SUBSTANCE: invention discloses novel comb-like polymethylsiloxanes of general formula 
(I), where X denotes the same radical from: -Si(CH3)2CH=CH2, -Si(CH3)3, -Si(CH3)2H; Y denotes the same radical from: -CH3, -CH=CH2; n is a whole number from 12 to 600; m equals 0 or a whole number from 1 to 11. The invention also discloses a method of obtaining said polymethylsiloxanes through a reaction in an organic solvent medium between poly(sodium oxy)methylsiloxane and a siloxane oligomer selected from oligomers of general formula X-[OSi(CH3)2]m-Z, where X and m assume values given above; Z denotes - Cl or -OC(O)CH3.
EFFECT: novel comb-like polymethylsiloxanes have polydispersity on the number of beams and have sufficiently high molecular weight, and the method enables to obtain high output of the product.
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR PRODUCING POLYORGANOSILOXANE MOLECULAR BRUSHES | 2021 |
|
RU2783679C1 |
| METHOD OF PRODUCING STEREOREGULAR CYCLOLINEAR OLIGOSILOXANES OF α,ω-DIHYDROXYPOLY(OXY-2,8-DIORGANO-4,4,6,6,10,10,12,12-OCTAMETHYLCYCLOHEXASILOXANE-2,8-DIIYLS) | 2010 |
|
RU2447094C2 |
| FUNCTIONAL METALLOSILOXANES AND METHOD FOR THEIR PREPARING | 2005 |
|
RU2296767C1 |
| FUNCTIONAL POLYMETALLOSILOXANES | 2005 |
|
RU2293746C1 |
| METHOD FOR OBTAINING METHYL SILOXANE COPOLYMERS WITH AZIDOPROPYL AND SYLIL HYDRIDE FUNCTIONAL GROUPS | 2021 |
|
RU2799808C2 |
| ORGANO-INORGANIC MOLECULAR SILICA SOLS AND PREPARATION METHOD THEREOF | 2009 |
|
RU2421397C1 |
| MULTIBEAM STAR-LIKE POLYDIMETHYLSILOXANES | 2009 |
|
RU2415880C2 |
| METHOD OF PRODUCING HYDROXYL-CONTAINING POLYMETHYLSILOXANES | 2018 |
|
RU2697476C1 |
| POLYARYLSILANE DENDRIMERS AND METHOD OF OBTAINING THEM | 2007 |
|
RU2353629C1 |
| CARBOSILANE-SILOXANE DENDRIMERS | 2009 |
|
RU2422473C1 |
