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2 507 217

(13)

(51)

IPC

C08G77/04(2006-01-01)

(21) (22)

Application

2012155631/04, 2012-12-21

(24)

Start date

2012-12-21

(22)

Actual filing date

2012-12-21

(45)

Published

2014-02-20

(72)

Inventor

Efremova Natalija VladimirovnaMazhorova Nadezhda GavriilovnaIvanov Pavel Vladimirovich

(73)

Holder

Obshchestvo S Ogranichennoj Otvetstvennost'Ju Firma

METHOD OF PRODUCING POLYORGANOELEMENTO-SPIRO-CYCLOSILOXANES Russian patent published in 2014 - IPC C08G77/04

Abstract RU 2507217 C1

FIELD: chemistry.

SUBSTANCE: invention relates to organoelemental spiro cyclic polymers. disclosed is a method of producing polyorganoelemento-spiro-cyclosiloxanes by co-hydrolysis of organoelemental comonomers: a compound of formula Z(OY)₄, where Z=Si, Ti; Y=alkyl C_nH_2n+1(n=1-5) and diorganodialkoxysilane or diorganoalkoxysiloxane of general formula RO[SiRR'O]_xR (R is Me or Et, R' is H or Me or Vin or Ph; x=1-4) in molar ratio of 1:(2-4) with a stoichiometric amount of water of 1-2 moles to the total amount of monomers without an organic solvent in the presence of an acid catalyst.

EFFECT: reducing consumption of crude components, environmental efficiency of the process, absence of ionic impurities in the end product and longer storage life thereof.

3 cl, 8 ex

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RU 2 507 217 C1

Authors

Efremova Natalija Vladimirovna

Mazhorova Nadezhda Gavriilovna

Ivanov Pavel Vladimirovich

Dates

2014-02-20—Published

2012-12-21—Filed