RU2009126039A - METHOD FOR PRODUCING ORGANOSILSESQUIOXOANES BY POLYCONDENSATION OF ORGANOALCOXISILANES IN AN ACTIVE MEDIUM - Google Patents
METHOD FOR PRODUCING ORGANOSILSESQUIOXOANES BY POLYCONDENSATION OF ORGANOALCOXISILANES IN AN ACTIVE MEDIUM Download PDFInfo
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- RU2009126039A RU2009126039A RU2009126039/04A RU2009126039A RU2009126039A RU 2009126039 A RU2009126039 A RU 2009126039A RU 2009126039/04 A RU2009126039/04 A RU 2009126039/04A RU 2009126039 A RU2009126039 A RU 2009126039A RU 2009126039 A RU2009126039 A RU 2009126039A
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- carboxylic acid
- active medium
- organic solvent
- anhydrous carboxylic
- alk
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Abstract
1. Способ получения органосилсесквиоксанов, содержащих по крайней мере одно звено из ряда звеньев [RSiO3/2] и/или [RSi(OH)O2/2], химической структуры (А) или (В) соответственно ! , ! где R означает Alk или С6Н5 или СН2=СН или СН2=СН-СН2, ! Alk означает алкильную группу от С1 до C4, ! заключающийся в том, что осуществляют процесс поликонденсации в активной среде, по крайней мере, одного органоалкоксисилана, выбранного из ряда органоалкоксисиланов общей формулы (I) ! ! где R, Alk имеют вышеуказанные значения, ! при этом процесс осуществляют в роторном испарителе с последующим удалением летучих веществ. ! 2. Способ по п.1, отличающийся тем, что активной средой является безводная карбоновая кислота или смесь безводной карбоновой кислоты и органического растворителя. ! 3. Способ по п.2, отличающийся тем, что активной средой является безводная карбоновая кислота. ! 4. Способ по п.2, отличающийся тем, что активной средой является смесь безводной карбоновой кислоты и органического растворителя. ! 5. Способ по п.2, отличающийся тем, что безводная карбоновая кислота выбрана из ряда: муравьиная, уксусная, пропионовая, изомасляная, триметилуксусная. ! 6. Способ по п.2, отличающийся тем, что органический растворитель выбран из ряда: толуол, этилацетат, бутилацетат, метилтрет-бутиловый эфир. ! 7. Способ по п.3, отличающийся тем, мольное соотношение суммарного количества органоалкоксисиланов и карбоновой кислоты составляет от 1:3 до 1:20. ! 8. Способ по п.4, отличающийся тем, что количество органического растворителя в реакционной смеси составляет от 10 до 90 об.%. ! 9. Способ по любому из пп.1-8, отличающийся тем, что процесс поликонденсации осуществляют в температурном ин 1. A method of producing organosilsesesquioxanes containing at least one unit from a number of units [RSiO3 / 2] and / or [RSi (OH) O2 / 2], chemical structure (A) or (B), respectively! ! where R is Alk or C6H5 or CH2 = CH or CH2 = CH-CH2,! Alk means an alkyl group from C1 to C4,! consisting in the fact that carry out the polycondensation process in the active medium of at least one organoalkoxysilane selected from a number of organoalkoxysilanes of the general formula (I)! ! where R, Alk have the above meanings,! the process is carried out in a rotary evaporator, followed by the removal of volatile substances. ! 2. The method according to claim 1, characterized in that the active medium is anhydrous carboxylic acid or a mixture of anhydrous carboxylic acid and an organic solvent. ! 3. The method according to claim 2, characterized in that the active medium is anhydrous carboxylic acid. ! 4. The method according to claim 2, characterized in that the active medium is a mixture of anhydrous carboxylic acid and an organic solvent. ! 5. The method according to claim 2, characterized in that the anhydrous carboxylic acid is selected from the series: formic, acetic, propionic, isobutyric, trimethylacetic. ! 6. The method according to claim 2, characterized in that the organic solvent is selected from the series: toluene, ethyl acetate, butyl acetate, methyl tert-butyl ether. ! 7. The method according to claim 3, characterized in that the molar ratio of the total amount of organoalkoxysilanes and carboxylic acid is from 1: 3 to 1:20. ! 8. The method according to claim 4, characterized in that the amount of organic solvent in the reaction mixture is from 10 to 90 vol.%. ! 9. The method according to any one of claims 1 to 8, characterized in that the polycondensation process is carried out in a temperature in
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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RU2009126039/04A RU2009126039A (en) | 2009-07-09 | 2009-07-09 | METHOD FOR PRODUCING ORGANOSILSESQUIOXOANES BY POLYCONDENSATION OF ORGANOALCOXISILANES IN AN ACTIVE MEDIUM |
Applications Claiming Priority (1)
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RU2009126039/04A RU2009126039A (en) | 2009-07-09 | 2009-07-09 | METHOD FOR PRODUCING ORGANOSILSESQUIOXOANES BY POLYCONDENSATION OF ORGANOALCOXISILANES IN AN ACTIVE MEDIUM |
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RU2009126039A true RU2009126039A (en) | 2011-01-20 |
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RU2009126039/04A RU2009126039A (en) | 2009-07-09 | 2009-07-09 | METHOD FOR PRODUCING ORGANOSILSESQUIOXOANES BY POLYCONDENSATION OF ORGANOALCOXISILANES IN AN ACTIVE MEDIUM |
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RU (1) | RU2009126039A (en) |
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2009
- 2009-07-09 RU RU2009126039/04A patent/RU2009126039A/en not_active Application Discontinuation
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Legal Events
Date | Code | Title | Description |
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FA92 | Acknowledgement of application withdrawn (lack of supplementary materials submitted) |
Effective date: 20110202 |