Способ получения полиэтилена
Patents
Language: |
Русский |
Type: |
Invention |
Number |
SU 445300 A1 |
Request number: |
1665683/23-05 |
Request date: |
Jun 1, 1971 |
patent.field.start_date: |
|
Registration date: |
Nov 15, 1979 |
patent.field.request_publication_date: |
|
Authors |
Дружков В.Н.
,
Захаров В.А.
,
Ермаков Ю.И.
|
Affiliations |
1 |
Boreskov Institute of Catalysis SB RAS
|
|
The mol. wt. of polyethylene (I) [9002-88-4] was regulated and the catalyst activity was improved in gas-phase or suspension polymn. of ethylene in the presence of Cr oxide or supported Ti catalysts by conducting the polymn. in 2 stages: (1) at 20-80° to 10-1000 g I yield/g catalyst and (2) at 90-120° until the desired mol. wt. was obtained.