Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Treating polymer containing material or treating a solid...
Reexamination Certificate
2004-01-26
2009-02-17
Boykin, Terressa M (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Treating polymer containing material or treating a solid...
C428S402000, C524S356000, C524S366000, C524S379000, C528S483000, C528S486000, C528S491000, C528S493000, C528S495000, C528S497000, C528S499000
Reexamination Certificate
active
07491791
ABSTRACT:
A method for treating polytetrafluoroethylene (PTFE) in its reactor latex form to produce a dry submicron PTFE powder that remains stable without rheology modifiers, surfactants, wetting agents, pH adjusters or other stabilizing additives. Reactor latex PTFE formed during an emulsion polymerization process can be irradiated, with an electron beam or gamma rays, during or after the polymerization to form a product where the dry submicron PTFE powder is free-flowing, tends not to self-agglomerate and tends not to dust into the air upon handling so that the PTFE is readily dispersible when placed in a desired application system or medium.
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Awad Youssef
Carey Paul
Cody Charles A.
Neuberg William
Sui Manshi
Boykin Terressa M
Ostrolenk Faber Gerb & Soffen, LLP
Shamrock Technologies Inc.
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