Continunous process for preparing polytetrafluoroethlene wet pow

Details Continunous process for preparing polytetrafluoroethlene wet pow Continunous process for preparing polytetrafluoroethlene wet pow

1995-10-02

1998-05-05

Teskin, Fred

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

Synthetic resins

Treating polymer containing material or treating a solid...

528502R, 526255, 523322, C08F 618

Patent

active

057476403

ABSTRACT:
A process for continuously preparing a wet powder of PTFE, comprising the step of continuously slurrying a PTFE aqueous dispersion with a high shear machine, and the step of continuously granulating the slurry by using vertical agitator. The process can be carried out for a long time without trouble, and can continuously provide a dry powder having good powder properties. The powder properties can be controlled by regulating operation conditions.

REFERENCES:
patent: 3046263 (1962-07-01), Whitlock
patent: 3766133 (1973-10-01), Roberts et al.
patent: 4439385 (1984-03-01), Kuhls et al.
patent: 4713443 (1987-12-01), Nakashima et al.

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