
324
S
Spheripol
uses two reactors in series. Spherilene S uses a single reactor. The rst plant was built by Himont in Lake Charles,
LA, in 1993. Fifteen plants had been licensed by 2007. The process is now licensed by Basell Polyolens.
Eur. Chem. News, 1991, 56(1476), 27; 1992, 58(1530), 18.
Spheripol A process for making polypropylene and propylene copolymers. Homopolymerization is conducted
in the liquid phase in a loop tubular reactor; copolymerization is conducted in the gas phase in a uidized-bed
reactor. The catalyst is treated with a special silane. The product is in the form of beads of up to 5 mm in diam-
eter. Developed by Montecat ...