COMPOSITION FOR FILTER MATERIAL Russian patent published in 1998 - IPC

Abstract RU 2101075 C1

FIELD: filtration technics. SUBSTANCE: composition for porous filter materials includes 25-55 wt % of liquid phenol-formaldehyde resin and 45-75 wt % of powdered oxalic acid. Composition is thoroughly agitated, put into mold, and hardened at 20-90 C. After blowing agent is washed away, pieces are placed in closed molds and heated to 150-160 C. EFFECT: improved filter material quality. 1 tbl

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RU 2 101 075 C1

Authors

Shchuchkin M.N.

Davydjuk V.D.

Orlov A.G.

Buzylev A.E.

Dates

1998-01-10—Published

1996-07-05—Filed