Agglomerating filled polytetrafluoroethylene

C - Chemistry – Metallurgy – 08 – L

Patent

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Details

400/4107, 400/53

C08L 27/18 (2006.01) C08J 3/205 (2006.01) C08K 5/544 (2006.01) C08K 7/00 (2006.01)

Patent

CA 1056979

ABSTRACT OF THE DISCLOSURE The agglomeration of finely-divided granular tetra- fluoroethylene polymer particles to produce agglomerated particles having improved flow properties is carried out by agitating the finely-divided particles in an aqueous disper- sion containing a substantially water-immiscible organic liquid. The finely-divided particles can first be blended with particulate hydrophilic filler material and the blend agglomerated. The presence of both an amino-functional or- ganosilane and a silicone resin while agitating the aqueous dispersion of the blend of the filler material and the finely-divided tetrafluoroethylene polymer effectively reduces lose of filler during the agglomeration procedure.

227575

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