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High-pressure ethylene polymerization initiated by peroxide

✍ Scribed by Kodama, Shinjiro ;Shimidzu, Takeo ;Yuasa, Sachio ;Kagiya, Tsutomu ;Fukui, Kenichi

Publisher
John Wiley and Sons
Year
1961
Weight
483 KB
Volume
55
Category
Article
ISSN
0022-3832

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✦ Synopsis

Abstract

The polymerization of ethylene initiated by di‐tert‐butyl peroxide is studied in batch system under pressures ranging from 300 to 1700 kg./cm.^2^, and at temperatures of 110 to 170°C., using reaction mediums of water, ethyl alcohol, and their mixture. An experimental rate equation in water is:

The rate is proportional to the concentration of radical produced by the first‐order decomposition of initiator. A reaction scheme is proposed from which this rate equation can be derived. According to this scheme, the deactivation of radical is kinetically of the first order with respect to the radical concentration. Several relations between the reaction conditions and properties of polyethylene produced are also described.

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