SU145750A1 - Method for the catalytic polymerization of ethylene - Google Patents
Method for the catalytic polymerization of ethyleneInfo
- Publication number
- SU145750A1 SU145750A1 SU733452A SU733452A SU145750A1 SU 145750 A1 SU145750 A1 SU 145750A1 SU 733452 A SU733452 A SU 733452A SU 733452 A SU733452 A SU 733452A SU 145750 A1 SU145750 A1 SU 145750A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- ethylene
- catalytic polymerization
- carried out
- para
- obtain high
- Prior art date
Links
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- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
Description
Известны способы каталитической полимеризации этилена в органическом растворителе при атмосферном давлении и низких температурах с применением в качестве катализатора алюминийорганических соединений и диалкилкадми .Known methods for the catalytic polymerization of ethylene in an organic solvent at atmospheric pressure and low temperatures, using as a catalyst organoaluminum compounds and dialkilkadmi.
Указанные способы недостаточно производительны и не позвол ют получать нолиэтилен высокой плотности.These methods are not sufficiently productive and do not allow to obtain high density polyethylene.
По предлагаемому способу, с целью получени полиэтилена высокой nviOTHOCTH, процесс каталитической полимеризации ведут в присутствии дн-паратолилкадми в смеси с четыреххлористым титаном, вз тых в соотношении 1:2.According to the proposed method, in order to obtain high nviOTHOCTH polyethylene, the catalytic polymerization process is carried out in the presence of dn-para-tolilcadmi mixed with titanium tetrachloride, taken in a 1: 2 ratio.
Наиболее интенсивно указанный процесс протекает при 0°.The most intensively specified process takes place at 0 °.
Пример. В стекл нную колбу емкостью 500 мл, снабженную мешалкой , обратным холодильником, капельной воронкой, термометром и приспособлением дл ввода этилена, помещают 300 мл чистого гексана и кип т т его в токе этилена. После охлаждени до комнатной температуры в гексан ввод т 1,57 г (0,005 мол ) ди-паратолилкадми и реакционную смесь охлаждают до температуры -2025°. Затем при перемешивании по капл м ввод т 1,9 г (0,01 мол ) четыреххлористого титана , растворенного в 20 мл гексана. Окраска раствора при этом медленно измен етс от оранжевой до красно-коричневой. Наиболее активное поглощение этилена наблюдаетс при температуре около 0°. Полимеризацию ведут в течение шести часов Полученный полиэтилен отмывают метиловым спиртом, 2-5%-ной азотной кислотой, водой, а затем высушивают. Выход- 51,9г. Чистый полимер представл ет собой белый порошок, из которого можно прессовать .пленки при температуре 155- 165° и давлении пор дка 100 ат. При испытани х полученных пленок на ма тниковомдинамометре с термостатированием были получены следующие результаты, характеризующие механические свойства пленок:Example. In a 500 ml glass flask equipped with a stirrer, a reflux condenser, an addition funnel, a thermometer, and an ethylene injection device, 300 ml of pure hexane are placed and boiled in a stream of ethylene. After cooling to room temperature, 1.57 g (0.005 mol) of di-para-tolilkadmi are introduced into hexane and the reaction mixture is cooled to -2025 °. Then, with stirring, 1.9 g (0.01 mol) of titanium tetrachloride dissolved in 20 ml of hexane is added dropwise. The color of the solution slowly changes from orange to red-brown. The most active absorption of ethylene is observed at a temperature of about 0 °. Polymerization is carried out within six hours. The resulting polyethylene is washed with methyl alcohol, 2-5% nitric acid, water, and then dried. Yield - 51.9 g. The pure polymer is a white powder from which films can be pressed at a temperature of 155-165 ° and a pressure of about 100 atm. When testing the films obtained on a fertilizer dynamometer with temperature control, the following results were obtained, which characterize the mechanical properties of the films:
напр жение рекристаллизации, разрывна прочность, кг/см удлинение %%recrystallization stress, tensile strength, kg / cm elongation %%
Предмет изобретени Subject invention
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU733452A SU145750A1 (en) | 1961-06-07 | 1961-06-07 | Method for the catalytic polymerization of ethylene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU733452A SU145750A1 (en) | 1961-06-07 | 1961-06-07 | Method for the catalytic polymerization of ethylene |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU145750A1 true SU145750A1 (en) | 1961-11-30 |
Family
ID=48301265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU733452A SU145750A1 (en) | 1961-06-07 | 1961-06-07 | Method for the catalytic polymerization of ethylene |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU145750A1 (en) |
-
1961
- 1961-06-07 SU SU733452A patent/SU145750A1/en active
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