B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
402/104, 402/112
B01J 19/20 (2006.01) C08G 2/10 (2006.01) C08G 2/18 (2006.01)
Patent
CA 1271880
Abstract of the Disclosure A trioxane polymer is continuously produced with a continuous stirring-mixing apparatus which comprises two parallel rotational shafts, a number of paddles mounted on each rotational shaft and a barrel having an inside wall surface along the cir- cular surface traced by the respective paddles, as they rotate, the barrel having a cross-section in the shape of two circles concentric with the two rotational shafts, which overlap each other. The apparatus is provided with a temperature controlling jacket. In the apparatus a mixture of trioxane, catalyzer, other copolymerizable comonomers, as the case may be, and additives is continuously fed in through a material supply port located at one end thereof, then, the material mixture is subjected to a polymeri- zation or copolymerization reaction, while being stirred by turning the aforementioned rotational shafts in opposite directions to each other and, thereafter, the polymers or copolymers of trioxane are taken out as fine granules through a discharge port located at the other end thereof. The method is characterized in that one set or two or more sets of paddles of a sectional shape which meet the requirement that when a pair of paddles facing each other are turned in different directions around their rotational axes, the clearance between them is kept to less than 3/100 of the barrel ID, the paddles being mounted on each shaft, adjoining each other, and the different direction turning is made in a state such that the clearance between the farthest part from the rotational axis of said paddle and the inside wall of the barrel is always less than 3/100 of the barrel ID.
508895
Chino Shuichi
Goto Noboru
Minamisawa Tsuyoshi
Nakamura Masaaki
Chino Shuichi
Goto Noboru
Minamisawa Tsuyoshi
Nakamura Masaaki
Polyplastics Co. Ltd.
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