Ethylene → HCID 86758380, compound

Participants

Reaction Steps

The cascade of autoclaves of example 1 is continuously charged with 458 g/h of ethylene, a mixture A (2000 ml/h) consisting of 9000 g of vinyl acetate (d=0.79 g/ml), 9000 g of tert.-butanol and 180 g of acrylic acid (d=1.051 g/ml) and an initiator solution B (120 ml/h) consisting of 600 g of vinyl acetate, 600 g of tert.-butanol and 9 g tert.-butyl perpivalate. The monomers or monomer mixtures (mixture A, initiator solution B and ethylene) are introduced into autoclave 1 via the premix autoclave. The product stream passes through all autoclaves. The internal reactor temperatures are T1=67° C., T2=70° C., T3=73° C. and T4=80° C. The operating pressure is 300 bar. When equilibrium is reached samples are taken from the individual autoclaves through sluices. Unused ethylene is depressurised with caution and discharged. The degassed samples have solids contents of 15 to 40% by weight. The Mooney viscosity is 14(ML-4/100° C.); (VA content: 75% by weight, ethylene content: 20% by weight, acrylate content: 5% by weight). The average residence time was 7 hours.

Provenance & Evidence