SU152238A1 - The method of obtaining the acid chloride symmetric tetramethyldiphenyldisiloxanecarboxy- (4,4 ') acid - Google Patents
The method of obtaining the acid chloride symmetric tetramethyldiphenyldisiloxanecarboxy- (4,4 ') acidInfo
- Publication number
- SU152238A1 SU152238A1 SU773746A SU773746A SU152238A1 SU 152238 A1 SU152238 A1 SU 152238A1 SU 773746 A SU773746 A SU 773746A SU 773746 A SU773746 A SU 773746A SU 152238 A1 SU152238 A1 SU 152238A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- acid
- symmetric
- acid chloride
- obtaining
- tetramethyldiphenyldisiloxanecarboxy
- Prior art date
Links
Description
Известен способ получени хлорангидрида тетраметилдифепилдиСилоксандикарбоновой-{4 ,4) кислоты действнем хлористого тиснила на тетраметилдифенилдисилоксандикарбоновую-(4,4) кислоту с последующей перекристаллизацией полученного продукта и выходом его 47%.A known method for the preparation of tetramethyldipheldyl-siloxane dicarboxylic- {4, 4) acid chloride is actual tisnyl chloride on tetramethyldiphenyl disilyloxane dicarboxylic- (4,4) acid, followed by recrystallization of the obtained product and its yield of 47%.
Предлагаемый способ получени хлорангидрида симметричной тетраметилдифенилдисилок1санд карбоновой- (4,4) кислоты отличаетс тем, что хлорангидрид п-(диметилхлорсилил) бензойной кислоты гидролизуют водой при температуре не выше 1°. Способ позвол ет расширить сырьевую базу дл получени высокомолекул рных полимеров. The proposed method for preparing a symmetric tetramethyldiphenyl disilicone carbonyl- (4,4) acid chloride is characterized in that the acid chloride of p- (dimethylchlorosilyl) benzoic acid is hydrolyzed with water at a temperature not higher than 1 °. The method allows the raw material base to be expanded to produce high molecular weight polymers.
Полученное соединение может найти широкое применение дл синтеза различных высокомолекул рных линейных полимеров линейной структуры.The compound obtained can be widely used for the synthesis of various high molecular weight linear polymers of linear structure.
Пример. В стекл нный стакан емк. 1 л, снабженный мешалкой, термометром и капельной воронкой, загружают 500 мл воды. Стакан с .водой охлаждают смесью льда с солью. При достижении в воде температуры 1° при интенсивном перемешивании добавл ют частыми капл ми 106,75 г хлорангидрида п-(диметилхлорсилил) бензойной кислоты. По окончании подачи хлорангидрида содержимое стакана перемешивают в течение 30 мин, после чего быстро перенос т на воронку Бюхнера дл отделени кристаллов хлорангидрида тетраметилдифенилдисилоксандикарбоновой- (4,4) кислоты от образовавшейс сол ной кислоты. Кристаллы на фильтре промывают 3 раза охлажденной до 1° водой, отжимают , затем сразу помещают в вакуум-эксикатор, где высушивают над серной кислотой. Получают 90 г хлорангидрида с т. пл. 54-55° и содертжаннем хлора 17,31%.Example. In a glass glass tank. 1 liter, equipped with a stirrer, a thermometer and a dropping funnel, is charged with 500 ml of water. The glass with water is cooled with a mixture of ice and salt. When the temperature reaches 1 ° with vigorous stirring, 106.75 g of p- (dimethylchlorosilyl) benzoic acid chloride are added with frequent drops. At the end of the acid chloride supply, the contents of the glass are stirred for 30 minutes, after which they are quickly transferred to a Büchner funnel to separate tetramethyldiphenyl disiloxanecarboxylic acid (4.4) acid crystals from the hydrochloric acid formed. The crystals on the filter are washed 3 times with water cooled to 1 °, squeezed, then immediately placed in a vacuum desiccator, where they are dried over sulfuric acid. Obtain 90 g of the acid chloride with t. PL. 54-55 ° and a chlorine content of 17.31%.
№ 152238- 2 Предмет изобретени No. 152238- 2 Subject of the invention
Способ получени хлорангидрида симметричной тетраметилдифенилдисилоксапдикарбоновой- (4,4) кислоты, отличающийс тем,, что, с целью расширени сырьевой базы дл получени высокомолеку.л рных полимеров, хлорангидрид п-(диметилхлорсилил) бензойной кислоты гидролизуют водой при температуре не выше 1°.The method of obtaining the acid chloride with symmetric tetramethyldiphenyl disiloxapicarboxylic- (4,4) acid, characterized in that, in order to expand the raw material base to obtain high molecular weight polymers, p- (dimethylchlorosilyl) benzoic acid chloride is hydrolyzed with water at a temperature not higher than 2 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU773746A SU152238A1 (en) | 1962-04-12 | 1962-04-12 | The method of obtaining the acid chloride symmetric tetramethyldiphenyldisiloxanecarboxy- (4,4 ') acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU773746A SU152238A1 (en) | 1962-04-12 | 1962-04-12 | The method of obtaining the acid chloride symmetric tetramethyldiphenyldisiloxanecarboxy- (4,4 ') acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU152238A1 true SU152238A1 (en) | 1962-11-30 |
Family
ID=48306776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU773746A SU152238A1 (en) | 1962-04-12 | 1962-04-12 | The method of obtaining the acid chloride symmetric tetramethyldiphenyldisiloxanecarboxy- (4,4 ') acid |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU152238A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3931552A (en) | 1969-03-06 | 1976-01-06 | P. R. Mallory & Co., Inc. | Capacitor electrolyte |
| EP0394783A2 (en) * | 1989-04-28 | 1990-10-31 | General Electric Company | Method for making carboxy aryl terminated organosiloxanes |
-
1962
- 1962-04-12 SU SU773746A patent/SU152238A1/en active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3931552A (en) | 1969-03-06 | 1976-01-06 | P. R. Mallory & Co., Inc. | Capacitor electrolyte |
| EP0394783A2 (en) * | 1989-04-28 | 1990-10-31 | General Electric Company | Method for making carboxy aryl terminated organosiloxanes |
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