Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymerizing in two or more physically distinct zones
Patent
1977-08-04
1978-10-31
Holler, Alan
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymerizing in two or more physically distinct zones
526 73, 5263522, C08F 404, C08F 434, C08F 1002
Patent
active
041236009
ABSTRACT:
A process for polymerizing ethylene under the high temperature and high pressure conditions by using a battery of two or more autoclave reactors connected in series by means of piping provided with a heat exchanger, each of said reactors having an upper reaction zone and a lower reaction zone. According to this process, the reaction yield of polyethylene is higher than that attainable from the conventional two-zone polymerization methods, and the obtained polyethylene is improved in optical properties and processability.
REFERENCES:
patent: 3178404 (1965-04-01), Vaughn, Jr. et al.
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patent: 3575950 (1971-04-01), Gleason et al.
patent: 3756996 (1973-09-01), Pugh et al.
patent: 3875128 (1975-04-01), Suzuki et al.
patent: 4014859 (1977-03-01), Cooper et al.
Hiki Fumihiko
Kita Shinichiro
Kondou Akira
Shimizu Masayuki
Holler Alan
Sumitomo Chemical Company Limited
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