Mica-free joint compound

Details Mica-free joint compound Mica-free joint compound

1980-03-27

1981-09-01

Poer, James

Compositions: coating or plastic

Coating or plastic compositions

Proteinaceous material containing

C04B 1100

Patent

active

042869951

ABSTRACT:
A joint compound, having crack resistance substantially equal to joint compounds containing mica, wherein the mica has been replaced by low length to width ratio gypsum crystals formed by the hydration of calcium sulfate to calcium sulfate dihydrate, particularly crystals formed in the presence of citric acid.

REFERENCES:
patent: 3891453 (1975-06-01), Williams
patent: 3975320 (1976-08-01), Lane et al.
patent: 4152408 (1979-05-01), Winslow

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