FIELD: chemistry.
SUBSTANCE: invention relates to a polymerisation method and particularly to a method for copolymerisation of ethylene with higher α-olefins. Described is a method for copolymerisation of ethylene and an α-olefin comonomer containing 7-10 carbon atoms in a fluidised bed gas-phase reactor. Copolymerisation takes place in the presence of a Ziegler-Natta catalyst with multiple polymerisation centres. Said method is carried out in condensed mode. The amount of said α-olefin is kept less than the amount where considerable condensation occurs in the reactor. At least one of the following conditions is also used: a) the catalyst has 1-octene absorption rate of at least 700; b) polymerisation is carried out in the presence of an activator.
EFFECT: preventing condensation of 1-octene in the reactor.
7 cl, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| SPRAY DRIED (PRO)CATALYTIC ZIEGLER-NATTA SYSTEMS | 2019 |
|
RU2798843C2 |
| METHOD OF PRODUCING POLYOLEFIN FILM COMPOSITION AND FILMS OBTAINED USING SAID METHOD | 2017 |
|
RU2731614C1 |
| METHODS OF REGULATING POLYMER PROPERTIES | 2008 |
|
RU2447089C2 |
| METHOD OF PRODUCING MULTIMODAL COATING COMPOSITION | 2017 |
|
RU2720143C1 |
| POLYMERISATION METHOD | 2011 |
|
RU2572625C2 |
| ADDITIVE FOR POLYOLEFIN POLYMERISATION PROCESSES | 2010 |
|
RU2527945C2 |
| DEVICE FOR POLYMERISATION OF OLEFINS AND METHOD OF POLYMERISATION OF OLEFINS | 2015 |
|
RU2701923C2 |
| BRANCHED LONG-CHAIN POLYMERS AND PREPARATION THEREOF | 1995 |
|
RU2165437C2 |
| OBTAINING IMPACT-RESISTANT COPOLYMERS AND PROPYLENE-BASED PRODUCTS | 2014 |
|
RU2707101C1 |
| METHOD OF CONTINUOUS GAS PHASE POLYMERIZATION OF ALFA- OLEFIN(S) | 1994 |
|
RU2125063C1 |
