SU775106A1 - Method of producing polycaproamide - Google Patents
Method of producing polycaproamide Download PDFInfo
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- SU775106A1 SU775106A1 SU782703275A SU2703275A SU775106A1 SU 775106 A1 SU775106 A1 SU 775106A1 SU 782703275 A SU782703275 A SU 782703275A SU 2703275 A SU2703275 A SU 2703275A SU 775106 A1 SU775106 A1 SU 775106A1
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- polymer
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- polymerization
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Description
Изобретение относитс к области получени синтетических волокнообраэующихполимеров , а именно к способам получени поликапроамида, и может 5 быть использовано дл интенсификации и усовершенствовани промышленного производства поликапроамида, примен ющегос дл формовани волокон и литьевых изделий, а также дл улуч- Q шени качества полимера.The invention relates to the field of producing synthetic fiber-forming polymers, and specifically to methods for producing polycaproamide, 5 and can be used to intensify and improve the industrial production of polycaproamide used to form fibers and molded products, as well as to improve the quality of the polymer.
Известен способ получени поликапроамида путем гидролитической, полимеризации t-капролактама .в присутствии активатора-М-ациллактамов ,i} , лсA known method of producing polycaproamide by hydrolytic polymerization of t-caprolactam. In the presence of activator-M-acyl lactams, i}, hp
Недостатком такого способа вл етс то, что в присутствии воды N-ациллактамы .(например, N-ацетиллактам) легко гидролизуютс . Дл предотвращени гидролиза в реакционную среду 20 неоЪходимо вводить карбоновую кислоту или увеличивать температуру процесса и вводить одновременно с карбановой и п-толуолсульфокислоту, что усложн ет ведение технологического 25 процесса. Кроме того, N-ациллактамы в промышленных масштабах не производ тс , и их необходимо готовить .непосредственно на предпри ти х, где они используютс .The disadvantage of this method is that in the presence of water, N-acyl lactams (for example, N-acetyl lactam) are easily hydrolyzed. To prevent hydrolysis, carboxylic acid must be introduced into the reaction medium 20 or the temperature of the process must be increased and introduced simultaneously with carbanoic and p-toluenesulfonic acid, which complicates the management of the process 25. In addition, N-acyl lactams are not produced on an industrial scale and must be prepared directly in the plants where they are used.
Цель изобретени - сокращение продолжительности процесса полнамидировани за счет сокращени длительности иидукционного периода, усовершенствование технологии ведени процесса за счет снижени количества удал емых из peaKiuiOHHOft среды воды и монометра и улучшение качества поликапроа1 в1да за счет повышени стабильности его показателей.The purpose of the invention is to reduce the duration of the full-time process by reducing the duration of the induction period, improving the process technology by reducing the amount of water and monometer removed from the peaKiuiOHHOft medium and improving the quality of the polycapro-1da by increasing its stability.
Эта цель достигаетс тем, что в реакционную среду в качестве актива- торов ввод т 0,0005-0,01 моль % сложных эфиров терефтгшевой. кислоты и спиртов, например диметилтетрафталат (ДМТ). При этом карбоновые кислоты не ввод т, так как сложные эфиры не обладгиот больцюй склонностью к .гидролизу . Кроме, того, .сложные эфиры терефталевой кислоты вл ютс эффективными регул торами молекул рной массы, полимер после плавлени практически не измен ет молекул рной массы , что способствует практически повышению качества полимера и изделий из него.This goal is achieved by introducing 0.0005-0.01 mol% of tereft esters into the reaction medium as activators. acids and alcohols, for example dimethyltetraphthalate (DMT). At the same time, carboxylic acids are not introduced, as the esters do not possess a greater tendency to hydrolysis. In addition, the terephthalic acid esters are effective molecular weight regulators, the polymer after melting practically does not change the molecular weight, which contributes to practically improving the quality of the polymer and its products.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU782703275A SU775106A1 (en) | 1978-12-26 | 1978-12-26 | Method of producing polycaproamide |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU782703275A SU775106A1 (en) | 1978-12-26 | 1978-12-26 | Method of producing polycaproamide |
Publications (1)
Publication Number | Publication Date |
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SU775106A1 true SU775106A1 (en) | 1980-10-30 |
Family
ID=20801284
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU782703275A SU775106A1 (en) | 1978-12-26 | 1978-12-26 | Method of producing polycaproamide |
Country Status (1)
Country | Link |
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SU (1) | SU775106A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4614792A (en) * | 1984-06-09 | 1986-09-30 | Stamicarbon B.V. | Anionic polymerization of lactam with alkaline earth metal compound catalyst, lactam compound activator and ester compound |
EP2308460A1 (en) | 2005-02-21 | 2011-04-13 | Basf Se | Composition comprising active agents and at least one nitrogen-containing hyper-branched polymer |
WO2011141266A1 (en) | 2010-04-15 | 2011-11-17 | Basf Se | Process for producing flame-proofed polyurethane foams |
-
1978
- 1978-12-26 SU SU782703275A patent/SU775106A1/en active
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4614792A (en) * | 1984-06-09 | 1986-09-30 | Stamicarbon B.V. | Anionic polymerization of lactam with alkaline earth metal compound catalyst, lactam compound activator and ester compound |
EP2308460A1 (en) | 2005-02-21 | 2011-04-13 | Basf Se | Composition comprising active agents and at least one nitrogen-containing hyper-branched polymer |
WO2011141266A1 (en) | 2010-04-15 | 2011-11-17 | Basf Se | Process for producing flame-proofed polyurethane foams |
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