Devolatilizing molten polymer with a rotary disk processor
AssigneeAllied Corporation
InventorsDavid Pendlebury, Hugh H. Rowan, Edward J. Buyalos
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Abstract
This invention is an improved process to remove volatiles from molten synthetic, preferably fiber forming relatively high viscosity polymers which comprises passing molten polymer through a rotary disk polymer processor at a temperature of between 260.degree. C. and 300.degree. C. at a rate of between about 10 and 75 pounds (4.5 and 34 kg) per hour per square foot (0.093 m.sup.2) of processor filming area, at a rotational rate of between about 5 and 75 rpm for the disks, and a processor having between 1 and 20 stages.
Claims9
In a process to remove volatiles from molten synthetic, relatively high viscosity polymers the improvement comprising
- passing the molten polymer through a rotary disc polymer processor at a temperature of between about 260.degree. C. and 300.degree. C., at a rate of between about 10 and 75 pounds per hour per square foot (48.9 to 367 kg/hr/m.sup.2) of processor filming area, at a rotational rate of between about 5 and 75 rpm of the disks, and said processor having between about one and twenty stages.
Dependencies are inferred from the claim text.