C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
402/112, 402/116
C08G 2/10 (2006.01) B01F 7/10 (2006.01) B01J 19/18 (2006.01) B29B 7/48 (2006.01) C08F 2/02 (2006.01) C08G 85/00 (2006.01)
Patent
CA 1184342
ABSTRACT A method of continuous polymerization of a liquid polymerization medium to obtain fire particles of polymer product, the reaction being continuously effected in a polymerization reactor wherein mixing is effected by the action of a plurality of paddles mounted on each of dual rotating shafts, characterised in that the said dual shafts rotate in reverse directions to each other, and the said paddles are enclosed by walls of the said reactor the inside surface of the said walls closely defining the surface generated by the rotation of the ends of both sets of paddles; the ends of major axes of the said paddles on one rotating shaft periodically approaching the ends of minor axes of the corresponding paddles on the other rotating shaft to effect a mixing action as well as a longitudinal shearing action across a notional interface between said two shafts. The method is particularly useful for the polymerization of trioxan.
384397
Hotta Hiroshi
Ikenaga Yukio
Komazawa Hiroyasu
Mori Tadashi
Nakashima Tuneyasu
Polyplastics Co. Ltd.
Smart & Biggar
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