Solid state shear extrusion pulverization

Details Solid state shear extrusion pulverization Solid state shear extrusion pulverization

1993-10-28

1995-03-14

Han, Frances

Solid material comminution or disintegration

Processes

With application of fluid or lubricant material

241 17, 241 23, 241 65, 2412601, 241261, 366 85, 366 88, 366 89, B02C 1922

Patent

active

053970659

ABSTRACT:
A process and apparatus for pulverization of natural and synthetic polymeric material by heating to a pre-melt or softening temperature below its melting point, cooling and applying normal and shear stresses sufficient to form fine powder, and fluidizing the powder in a gas stream preventing its agglomeration. The same process and apparatus is suitable for enhancement of reactivity of polymeric and solid monomeric material to form homopolymers, copolymers, and new polymeric materials.

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