SU133223A1 - The method of producing polycarbonates - Google Patents
The method of producing polycarbonatesInfo
- Publication number
- SU133223A1 SU133223A1 SU641810A SU641810A SU133223A1 SU 133223 A1 SU133223 A1 SU 133223A1 SU 641810 A SU641810 A SU 641810A SU 641810 A SU641810 A SU 641810A SU 133223 A1 SU133223 A1 SU 133223A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- acid
- reaction
- producing polycarbonates
- polycarbonates
- phosgene
- Prior art date
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- Polyesters Or Polycarbonates (AREA)
Description
Известен способ получени поликарбонатов из диоксидифенилалканов или диоксидифенилсульфонов и фосгена в присутствии кислотосвлзующих агентов (пиридин, водные щелочные растворы) с применсннзм в качестве катализатора солей аммони . При этом дл более тесного контакта фаз в реакционную смесь добавл ют поверхностно-активные вещества (высщие жирные кислоты или их соли).A known method for producing polycarbonates from dioxydiphenylalkanes or dioxydiphenylsulfones and phosgene in the presence of acidifying agents (pyridine, aqueous alkaline solutions) is used as catalyst for ammonium salts. Here, surfactants (higher fatty acids or their salts) are added to bring the phases closer to the reaction mixture.
С целью получени поликарбонатов, растворимых в хлорированных углеводородах, предлагаетс способ, основанный на взаимодействии диоксидифенилалканов или -сульфонов с фосгеном в щелочной среде с применением в качестве катализатора низших моно- или дикарбоновых кислот как алифатического, так и ароматического р дов или их солейВ частности, катализаторами могут служить: уксуснокислый нпмрий, щавелевокислый калий, щавелевокислый аммоний, глутарова кислота, слизева ,кислота, бензойна кислота, (З-нафтенова кислота и терефталева кислота.In order to obtain polycarbonates soluble in chlorinated hydrocarbons, a method is proposed based on the interaction of dioxydiphenylalkanes or β-sulfones with phosgene in an alkaline medium using as a catalyst lower mono- or dicarboxylic acids of both aliphatic and aromatic series or their salts. In particular, catalysts can serve as npmriacetic acid, potassium oxalate, ammonium oxalate, glutaric acid, mucus, acid, benzoic acid, (3-naphthenic acid and terephthalic acid .
Количество катализатора, вводимого в реакционную смесь, колеблетс от 0,1 до 3% от веса вз того диоксисоединени .The amount of catalyst introduced into the reaction mixture ranges from 0.1 to 3% by weight of the dioxo compound taken.
Окончание реакции диоксидифенилалкана или -сульфона с фосгеном определ ют по нейтральности реакционной массы. С этой целью количество вводимого в реакцию едкого натри должно быть эквивалентно количеству кислоты, освобождающейс в результате реакции.The end of the reaction of dioxydiphenylalkane or -sulfone with phosgene is determined by the neutrality of the reaction mass. For this purpose, the amount of sodium hydroxide introduced into the reaction should be equivalent to the amount of acid released by the reaction.
Пример 1. К раствору 600 г (2,63 мол ) 2,2-(4,.ноксндифенил )-пропана и 316 г (7,90 мол ) NaOH в 3680 г воды добавл ют 1350 см метиленхлорида; затем при температуре 20° и энергичном перемешиьанпи начинают вводить фосген. Через 3 часа реакци заканчиваетс , прнкм конечна точка реакции определ етс при помощи индикаторной бумаги (). После отделени нижнего сло , содержап1;:то полпкарбо№ 133223-2нат , к нему приливают раствор 100 г NaOH в 4000 см воды- Одновременно в качестве катализатора добавл ют 2 г уксуснокислого натри и смесь энергично размешивают. Чтобы предотвратить разделение на два елс , примерно через час, к реакционной смеси приливают еще 1500 сж метнленхлорида . С этой же целью можно добавл ть эмульгирующие вещества . Во врем процесса размешивани , продолжающегос около часа после добавлени катализатора, сильно увеличиваетс в зкость.Example 1. To a solution of 600 g (2.63 mol) 2.2- (4, x-oxiphenyl) propane and 316 g (7.90 mol) of NaOH in 3680 g of water, add 1350 cm of methylene chloride; then at a temperature of 20 ° and vigorous stirring begin to enter phosgene. After 3 hours, the reaction is complete, and the final reaction point is determined by means of indicator paper (). After separation of the lower layer, the content is 1; In order to prevent separation into two weeks, after about an hour, another 1500 g of methylene chloride is added to the reaction mixture. Emulsifying agents may be added for the same purpose. During the stirring process, which lasts about an hour after the addition of the catalyst, the viscosity greatly increases.
Дл дальнейшей обработки реакционную смесь разбавл ют метиленхлоридом , несколько раз промывают водой с добавлением кислоты, сушат сульфатом натри , после чего сгущенный раствор или непосредственно выт гивают в пленку или же осаждают из него поликарбонат посредством ацетона.For further processing, the reaction mixture is diluted with methylene chloride, washed several times with water with addition of acid, dried with sodium sulfate, after which the thickened solution is either directly drawn into the film or the polycarbonate is precipitated from it with acetone.
Механические показатели пленки, полученной в соответствии с этим примером, следующие: толщина 85 (.i; разрущающее усилие 7 кг1мм ; раст жение 79%.The mechanical properties of the film obtained in accordance with this example are as follows: thickness 85 (.i; breaking force 7 kg1mm; stretching 79%.
Предмет изобретени Subject invention
Способ получени поликарбонатов путем взаимодействи фосгена с диоксифениловыми соединени ми (например, диоксифенилалканамиили -сульфонами), отличающийс тем, что, с целью получени поликарбонатов , растворимых в хлорированных углеводородах, в качестве катализаторов примен ют низшие монокарбоновые или дикарбоновые кислоты или их соли.A method of producing polycarbonates by reacting phosgene with dioxyphenyl compounds (e.g. dioxophenylalkanes or sulfones), characterized in that, in order to obtain polycarbonates soluble in chlorinated hydrocarbons, lower monocarboxylic or dicarboxylic acids are used as catalysts, or their monocarboxylic acids or dicarboxylic acids can be used as catalysts.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU641810A SU133223A1 (en) | 1959-10-22 | 1959-10-22 | The method of producing polycarbonates |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU641810A SU133223A1 (en) | 1959-10-22 | 1959-10-22 | The method of producing polycarbonates |
Publications (1)
Publication Number | Publication Date |
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SU133223A1 true SU133223A1 (en) | 1959-11-30 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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SU641810A SU133223A1 (en) | 1959-10-22 | 1959-10-22 | The method of producing polycarbonates |
Country Status (1)
Country | Link |
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SU (1) | SU133223A1 (en) |
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1959
- 1959-10-22 SU SU641810A patent/SU133223A1/en active
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