Devolatilizing molten polymer with a rotary disk processor

Details Devolatilizing molten polymer with a rotary disk processor Devolatilizing molten polymer with a rotary disk processor

1981-09-16

1982-12-07

Phynes, Lucille M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

264176F, 264211, 525439, 528272, 528274, 528309, 528310, 528481, C08G 6376, C08F28300, C08L 6700

Patent

active

043628524

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.

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