Radiation-induced polymerization of ethylene in a pilot plant. II. Development of wet-wall process. [. gamma. rays]

Journal Article · Wed Aug 01 04:00:00 EDT 1979 · J. Appl. Polym. Sci.; (United States)

DOI:https://doi.org/10.1002/app.1979.070240321· OSTI ID:5895952

Takehisa, M; Watanabe, H; Kurihara, H

Radiation-induced polymerization of ethylene using tert-butyl alcohol aqueous solution as a medium was carried out in a pilot plant with 10 liter reactor at pressures of 100 to 400 kg/cm/sup 2/, ethylene feed rates of 1.2 to 11.8 kg/hr, medium feed rates of 0 to 100 liter/hr, dose rates of 0.6 x 10/sup 5/ to 1.4 x 10/sup 5/ rad/hr, and at room temperature. The space-time yield and molecular weight of polymer were in the range of 1.2 to 16.7 g/liter hr and 6 x 10/sup 3/ to 2 x 10/sup 5/, respectively. The space-time yield and molecular weight increased with pressure and mean residence time. The space-time yield was the maximum at an ethylene molar fraction of 0.5. The produced polymer was continuously taken out from the high-pressure system as a slurry. The amount of deposited polymer to the reactor wall was markedly decreased, and five full days continuous operation was successfully performed with the space-time yield of 13.5 g/liter hr.

• Research Organization: Japan Atomic Energy Research Inst., Takasaki
• OSTI ID: 5895952
• Journal Information: J. Appl. Polym. Sci.; (United States), Journal Name: J. Appl. Polym. Sci.; (United States) Vol. 24:3; ISSN JAPNA
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400600* -- Radiation Chemistry
ALCOHOLS
ALKENES
AQUEOUS SOLUTIONS
BUTANOLS
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
COMPARATIVE EVALUATIONS
DEPOSITS
DISPERSIONS
DOSE RATES
ELECTROMAGNETIC RADIATION
ETHYLENE
FLOW RATE
FUNCTIONAL MODELS
GAMMA RADIATION
HIGH PRESSURE
HYDROCARBONS
HYDROXY COMPOUNDS
IONIZING RADIATIONS
KINETICS
MEDIUM TEMPERATURE
MIXTURES
MOLECULAR WEIGHT
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PILOT PLANTS
POLYETHYLENES
POLYMERIZATION
POLYMERS
POLYOLEFINS
PRESSURE DEPENDENCE
QUANTITY RATIO
RADIATIONS
REACTION KINETICS
SLURRIES
SOLUTIONS
SUSPENSIONS
TEMPERATURE DEPENDENCE
TIME DEPENDENCE
YIELDS