RU2010130782A - METHOD FOR PRODUCING LINEAR POLYDIMETHYLSILOXANES WITH TERMINAL HYDROXYLIC GROUPS BY POLYCONdensation of DIMETHYLDIALCOXYSILANES IN AN ACTIVE MEDIA - Google Patents
METHOD FOR PRODUCING LINEAR POLYDIMETHYLSILOXANES WITH TERMINAL HYDROXYLIC GROUPS BY POLYCONdensation of DIMETHYLDIALCOXYSILANES IN AN ACTIVE MEDIA Download PDFInfo
- Publication number
- RU2010130782A RU2010130782A RU2010130782/04A RU2010130782A RU2010130782A RU 2010130782 A RU2010130782 A RU 2010130782A RU 2010130782/04 A RU2010130782/04 A RU 2010130782/04A RU 2010130782 A RU2010130782 A RU 2010130782A RU 2010130782 A RU2010130782 A RU 2010130782A
- Authority
- RU
- Russia
- Prior art keywords
- carried out
- removal
- volatile components
- temperature
- carboxylic acid
- Prior art date
Links
Landscapes
- Silicon Polymers (AREA)
Abstract
1. Способ получения линейных полидиметилсилоксанов с концевыми гидроксильными группами, заключающийся в том, что осуществляют процесс поликонденсации диметилдиалкоксисилана, выбранного из ряда диметилдиалкоксисиланов общей формулы (I) ! ! где Alk означает алкильная группа от С1 до C4, ! при этом процесс поликонденсации осуществляют в активной среде, представляющей собой безводную карбоновую кислоту, с последующим удалением летучих компонентов. ! 2. Способ по п.1, отличающийся тем, что в качестве карбоновой кислоты используют кислоту, выбранную из ряда: муравьиная, уксусная, пропионовая, изомасляная, триметилуксусная. !3. Способ по п.1, отличающийся тем, что мольное соотношение диметилдиалкоксисилана и карбоновой кислоты составляет от 1:3 до 1:10. ! 4. Способ по п.1, отличающийся тем, что процесс поликонденсации в активной среде осуществляют в температурном интервале от 20°С до температуры кипения реакционной смеси. ! 5. Способ по п.1, отличающийся тем, что удаление летучих компонентов проводят в вакууме в температурном интервале от 20°С до 150°С. ! 6. Способ по п.4 или 5, отличающийся тем, что удаление летучих компонентов проводят при температуре 20°С. ! 7. Способ по п.6, отличающийся тем, что полученный полидиметилсилоксан характеризуется молекулярной массой 3500. ! 8. Способ по п.4 или 5, отличающийся тем, что удаление летучих компонентов проводят при температуре 100°С. ! 9. Способ по п.8, отличающийся тем, что полученный полидиметилсилоксан характеризуется молекулярной массой 24000. ! 10. Способ по п.4 или 5, отличающийся тем, что удаление летучих компонентов проводят при температуре 150°С. ! 11. Способ по п.10, отличающийся тем, что полученный п 1. The method of obtaining linear polydimethylsiloxanes with terminal hydroxyl groups, which consists in the fact that the polycondensation process of dimethyldialcoxysilane selected from a number of dimethyldialcoxysilanes of the general formula (I)! ! where Alk means an alkyl group from C1 to C4,! the polycondensation process is carried out in an active medium, which is an anhydrous carboxylic acid, followed by the removal of volatile components. ! 2. The method according to claim 1, characterized in that as the carboxylic acid using an acid selected from the series: formic, acetic, propionic, isobutyric, trimethylacetic. ! 3. The method according to claim 1, characterized in that the molar ratio of dimethyldialkoxysilane and carboxylic acid is from 1: 3 to 1:10. ! 4. The method according to claim 1, characterized in that the polycondensation process in the active medium is carried out in a temperature range from 20 ° C to the boiling point of the reaction mixture. ! 5. The method according to claim 1, characterized in that the removal of volatile components is carried out in vacuum in the temperature range from 20 ° C to 150 ° C. ! 6. The method according to claim 4 or 5, characterized in that the removal of volatile components is carried out at a temperature of 20 ° C. ! 7. The method according to claim 6, characterized in that the obtained polydimethylsiloxane is characterized by a molecular weight of 3500.! 8. The method according to claim 4 or 5, characterized in that the removal of volatile components is carried out at a temperature of 100 ° C. ! 9. The method according to claim 8, characterized in that the obtained polydimethylsiloxane is characterized by a molecular weight of 24,000.! 10. The method according to claim 4 or 5, characterized in that the removal of volatile components is carried out at a temperature of 150 ° C. ! 11. The method according to claim 10, characterized in that the resulting p
Claims (11)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2010130782/04A RU2456308C2 (en) | 2010-07-23 | 2010-07-23 | Method of producing linear polydimethylsiloxanes with terminal hydroxyl groups via polycondensation of dimethyldialkoxysilanes in active medium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2010130782/04A RU2456308C2 (en) | 2010-07-23 | 2010-07-23 | Method of producing linear polydimethylsiloxanes with terminal hydroxyl groups via polycondensation of dimethyldialkoxysilanes in active medium |
Publications (2)
Publication Number | Publication Date |
---|---|
RU2010130782A true RU2010130782A (en) | 2012-01-27 |
RU2456308C2 RU2456308C2 (en) | 2012-07-20 |
Family
ID=45786292
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
RU2010130782/04A RU2456308C2 (en) | 2010-07-23 | 2010-07-23 | Method of producing linear polydimethylsiloxanes with terminal hydroxyl groups via polycondensation of dimethyldialkoxysilanes in active medium |
Country Status (1)
Country | Link |
---|---|
RU (1) | RU2456308C2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150344634A1 (en) * | 2012-12-21 | 2015-12-03 | Nihon Yamamura Glass Co., Ltd. | Organic-inorganic hybrid prepolymer, organic-inorganic hybrid material, and element sealing structure |
RU2565671C1 (en) * | 2014-05-30 | 2015-10-20 | Федеральное государственное бюджетное учреждение науки Институт синтетических полимерных материалов им. Н.С. Ениколопова Российской академии наук (ИСПМ РАН) | Branched fluorine-containing organosilicon copolymers, method for production thereof and hydrophobic polymer coating based thereon |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU1735317A1 (en) * | 1990-01-05 | 1992-05-23 | Казанский Химико-Технологический Институт Им.С.М.Кирова | Method of obtaining low-molecular dimethyl syloxane rubber |
JP3079939B2 (en) * | 1994-08-25 | 2000-08-21 | 信越化学工業株式会社 | Method for producing low molecular weight organosiloxane having silanol group |
DE19857348A1 (en) * | 1998-12-11 | 2000-06-15 | Wacker Chemie Gmbh | Organopolysiloxane resins |
RU2006113775A (en) * | 2006-04-25 | 2007-11-20 | Институт синтетических полимерных материалов (ИСПМ) им. Н.С. Ениколопова РАН (RU) | METHOD FOR PRODUCING POLYorganorganosiloxanes by polycondensation of organoalkoxysilanes in an active medium |
-
2010
- 2010-07-23 RU RU2010130782/04A patent/RU2456308C2/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
RU2456308C2 (en) | 2012-07-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP2017502107A5 (en) | ||
JP2014148600A5 (en) | ||
MY182729A (en) | Process for producing polyhydroxyalkanoates from precursors obtained by anaerobic fermentation from fermentable biomass | |
RU2017123537A (en) | MEANS FOR DEFORMING HAIR TREATMENT | |
JP2013532117A5 (en) | ||
JP2016532734A5 (en) | ||
RU2015112327A (en) | METHOD FOR PRODUCING SEBACIC ACID | |
JP2011038020A (en) | Method for producing triorganosiloxy end-capped organopolysiloxane | |
RU2014141155A (en) | GYPSUM DISPERSANT ADDITIVE | |
RU2010130782A (en) | METHOD FOR PRODUCING LINEAR POLYDIMETHYLSILOXANES WITH TERMINAL HYDROXYLIC GROUPS BY POLYCONdensation of DIMETHYLDIALCOXYSILANES IN AN ACTIVE MEDIA | |
RU2012143604A (en) | CURING COMPOSITION | |
RU2015118036A (en) | METHOD FOR PRODUCING CARBAMIDE CONTAINING SILANES | |
RU2012140370A (en) | METHOD FOR PRODUCING ALKEN | |
JP2009137961A5 (en) | ||
JP2010254685A5 (en) | ||
RU2013127292A (en) | METHOD FOR PRODUCING STAR-SHAPED POLYMERS | |
RU2006113775A (en) | METHOD FOR PRODUCING POLYorganorganosiloxanes by polycondensation of organoalkoxysilanes in an active medium | |
RU2013143971A (en) | ADVANCED SOLVENT FOR REMOVING MALEIC ANHYDRIDE FROM THE GAS FLOW | |
JP2013216895A5 (en) | ||
EA201290868A1 (en) | COMPOSITION CONTAINING ACTIVE SUBSTANCE AND GRAINED POLYMER BASED ON POLYALKYLENOXIDE AND COMPLEX VINYL AIR | |
CN105152903B (en) | Preparation method of aliphatic dicarboxylic acid | |
EA201590366A1 (en) | METHOD OF OBTAINING CYCLIC COMPLEX DIETHERS, IN PARTICULARITY OF DILACTIDE | |
RU2017113008A (en) | SALTS OF ETHY ETHERS AND POLYMERIC ACID | |
RU2011126929A (en) | METHOD FOR PRODUCING POLYMETHYLESILOXANE LIQUIDS OF LINEAR OR BRANCHED STRUCTURE | |
RU2009126039A (en) | METHOD FOR PRODUCING ORGANOSILSESQUIOXOANES BY POLYCONDENSATION OF ORGANOALCOXISILANES IN AN ACTIVE MEDIUM |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | The patent is invalid due to non-payment of fees |
Effective date: 20160724 |