Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1980-02-25
1981-10-13
Jacobs, Lewis T.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 37R, 260 37EP, 260 37N, 260 37PC, 260 37SI, 260 38, 260 42, 260 4215, 260 4227, 260 4243, 260 4246, 260 4247, 260 4249, C08L 6700
Patent
active
042947502
ABSTRACT:
Particulate material, composites containing said material, and a method of making said particulate material. The material is composed of at least about 85% (number basis) of regular, well-defined ellipsoidal particles having a size less than about 25 microns, at least 90% and 50% by weight of the particles being less than about 15 and 10 microns in size respectively, a surface area of about 0.75 to about 2.5 square meters per gram and a specific gravity of about 2 to 3. The composites contain this particulate material and up to about 99% of one or more polymeric media. The particulate material is produced by subjecting a diverse mixture of flyash particles to dry air classification in an air classifier controlled to recover particulate particles as described above.
REFERENCES:
patent: 2987408 (1961-06-01), Minnick
patent: 3585155 (1971-06-01), Hollstein
patent: 3801536 (1974-04-01), Guenantin
patent: 3836504 (1974-09-01), Morisawa
patent: 4043831 (1977-08-01), Freidman
patent: 4147687 (1979-04-01), O'Donnell
patent: 4229329 (1980-10-01), Bennett
Ehrenreich Leo C.
Klingaman Richard M.
Jacobs Lewis T.
Penn Virginia Corporation
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