C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 22/38 (2006.01) B01F 7/24 (2006.01) C08G 69/28 (2006.01)
Patent
CA 2485261
The present invention relates to an apparatus for processing materials, a process for mixing, finishing and de-volatizing polyamide to make 66 nylon and the 66 nylon made by this process. The apparatus comprises an agitator section (12) hav-ing an outlet (14) adjacent the bottom thereof; a transfer screw (20) disposed adjacent the outlet of the agitator section; a spiral ribbon (24) extending upwardly from the transfer screw; a ring (26) dis-posed vertically above the spiral ribbon, at least one baffle (32a, 32b) disposed vertically above the spiral ribbon and connected to the ring and a wall-wiping spur connected to the ring. Preferably, the apparatus has two baffles - an upper one (32a) for pumping the material downwardly and a lower one (32b) for pumping the material up-wardly. The diameter of each baffle is preferably about 80 % of the diameter of the agitator sec-tion.
E. I. Du Pont de Nemours And Company
E.i. Du Pont de Nemours And Company
Torys Llp
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