By-product gypsum fillers for mica-free joint compounds consisti

Details By-product gypsum fillers for mica-free joint compounds consisti By-product gypsum fillers for mica-free joint compounds consisti

1973-05-11

1976-08-17

Schofer, Joseph L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

106109, 106110, 260 8, 260 296PS, 260 4252, C04B 1100, C04B 1102

Patent

active

039753204

ABSTRACT:
A filler for a mica-free joint compound, comprising by-product gypsum having a mean particle size between about 11 and about 12 microns, a percentage by weight of particles smaller than 1 micron of between about 5 and about 6.5, and a packed dry bulk volume no greater than about 93 cc. per 100 grams.

REFERENCES:
patent: 3297601 (1967-01-01), Maynard et al.
patent: 3303147 (1967-02-01), Elder
patent: 3305518 (1967-02-01), Jakacki
patent: 3557029 (1971-01-01), Bergeron
patent: 3652309 (1972-03-01), Lane
patent: 3666581 (1972-05-01), Lane
patent: 3723146 (1973-03-01), Lane

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