SU467909A1 - The method of producing polypropylene - Google Patents
The method of producing polypropyleneInfo
- Publication number
- SU467909A1 SU467909A1 SU1891672A SU1891672A SU467909A1 SU 467909 A1 SU467909 A1 SU 467909A1 SU 1891672 A SU1891672 A SU 1891672A SU 1891672 A SU1891672 A SU 1891672A SU 467909 A1 SU467909 A1 SU 467909A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- polypropylene
- propylene
- producing polypropylene
- pressure
- polymer
- Prior art date
Links
Description
(54) СПОСЮБ ПОЛУЧЕНИЯ ПОЛИПРОПИЛЕНА(54) METHOD OF OBTAINING POLYPROPYLENE
Изобретение относитс к производству цолиолефинов на металлоорганических катализаторах и, в частности, полипропилена.This invention relates to the production of coli-olefins on organometallic catalysts and, in particular, polypropylene.
Известен способ получени полипропилена непрерывной полимеризацией пропилена в среде инертного углеводородного растворите« л при 20-1ОО°С и давпента 1-50 ати в I , присутствии катахшзатора, состо щего из A known method of producing polypropylene by continuous polymerization of propylene in an inert hydrocarbon solvent is "l at 20-1OO ° C and dawpenta 1-50 ati in I, in the presence of a catachate consisting of
треххлористого титана и дйэтилалюминийхло-,| рида ( с модификаторами или без них) с последующим испарением из полученного поглимеризата непрореагировавшего проп11лена.trichloride titanium and diethylaluminium-, | read (with or without modifiers), followed by evaporation of unreacted propylene from the resulting rimmer.
Однако такой способ характеризуетс тем, что испарение избытка растворенного 15 пропилена и водорода при 6О-8О°С и давлении 0,1-О,7 ати сопровождаетс дополнительной полимеризацией пропилена. В результате этого снижаетс качество полипропилена за счет уменьшени показател 20 текучести расплава, увеличени разброса по этому показателю и расширепи молркул рно-весового распределени . Такой полимер мало пригоден дл производства пленкн и волокна.25However, this method is characterized by the fact that the evaporation of an excess of dissolved 15 propylene and hydrogen at 6 ° -8 ° C and a pressure of 0.1-O, 7 atm is accompanied by additional polymerization of propylene. As a result, the quality of polypropylene decreases due to a decrease in the melt flow rate 20, an increase in the spread of this indicator and an increase in the molecular weight distribution. Such a polymer is not very suitable for the production of films and fibers.
Цель изобретени - улучшение качества полипропилена.The purpose of the invention is to improve the quality of polypropylene.
Дл этого на стадии непрореагировавшего пропилена в полимеризат ввод т ингц .биторы полимеризации, выбранные из группы содержащей диметиловый эфир диэтиленгли ол и высококип шие многоатомные спирты например, глицерин или диэтиленгликоль,To do this, at the stage of unreacted propylene, polymeric polymerized injectors are used, selected from the group containing diethylene glycol dimethyl ether and high boiling polyhydric alcohols, for example glycerol or diethylene glycol,
Пример 1,В лабораторный ректор емкостью 1 л загружают 350 мл .бензина ввод т пропилен до давлени Ю ати, водЬгрод до концентрации в газовой фазе 4 сб.% и 1 г диэтилалюминийхлорида. Нагревают до 70°С и ввод т 0,26 г Tt Clg. .Врем полимеризации 1 час. Суспензию полимера обрабатьюают изопропиловым спиртом, нёйт рализуют щелочью и промывают водой. Полимер отдел ют от бензина и сушат. Получают 152 г полипропилена с показателем текучести расплава 29,3 г/1О мин.Example 1, 350 ml of benzine are introduced into a laboratory rector with a capacity of 1 l, propylene is added to a pressure of 10 Å, water is added up to a concentration in the gas phase of 4 sb.% And 1 g of diethyl aluminum chloride. Heat to 70 ° C and add 0.26 g of Tt Clg. Polymerization time is 1 hour. The polymer suspension is treated with isopropyl alcohol, neutralized with alkali and washed with water. The polymer is separated from gasoline and dried. 152 g of polypropylene are obtained with a melt flow rate of 29.3 g / 1O min.
П р и м е р 2. Используют прием при., мера 1. Понижают давление до 0,5 ати и испар ют пропилен при 70°с в течение 1 1 час. Получают 257,5 г полипропиленаEXAMPLE 2 Reception is used. Measure 1. Reduce the pressure to 0.5 air pressure and evaporate the propylene at 70 ° C for 1 hour. Get 257.5 g of polypropylene
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1891672A SU467909A1 (en) | 1973-03-13 | 1973-03-13 | The method of producing polypropylene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU1891672A SU467909A1 (en) | 1973-03-13 | 1973-03-13 | The method of producing polypropylene |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU467909A1 true SU467909A1 (en) | 1975-04-25 |
Family
ID=20544923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU1891672A SU467909A1 (en) | 1973-03-13 | 1973-03-13 | The method of producing polypropylene |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU467909A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4551509A (en) * | 1982-07-29 | 1985-11-05 | Societe Chimique Des Charbonnages S.A. | Process for manufacturing homopolymers and copolymers of ethylene |
| US4650841A (en) * | 1982-12-24 | 1987-03-17 | Societe Chimique des Chabonnages | Continuous process for the manufacture of ethylene homopolymers or ethylene copolymers |
| US4755572A (en) * | 1982-12-24 | 1988-07-05 | Societe Chimique Des Charbonnages S.A. | Process for the manufacture of homopolymers or copolymers of ethylene |
-
1973
- 1973-03-13 SU SU1891672A patent/SU467909A1/en active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4551509A (en) * | 1982-07-29 | 1985-11-05 | Societe Chimique Des Charbonnages S.A. | Process for manufacturing homopolymers and copolymers of ethylene |
| US4650841A (en) * | 1982-12-24 | 1987-03-17 | Societe Chimique des Chabonnages | Continuous process for the manufacture of ethylene homopolymers or ethylene copolymers |
| US4755572A (en) * | 1982-12-24 | 1988-07-05 | Societe Chimique Des Charbonnages S.A. | Process for the manufacture of homopolymers or copolymers of ethylene |
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