Fibrous mat-faced gypsum board in exterior and interior finishin

Details Fibrous mat-faced gypsum board in exterior and interior finishin Fibrous mat-faced gypsum board in exterior and interior finishin

1991-06-27

1993-06-22

Friedman, Carl D.

Static structures (e.g., buildings)

Disparate sheet lamina between exposed surfaces of wall,...

264133, E04B 500

Patent

active

052207625

ABSTRACT:
Gypsum-containing boards, uses for these boards, and methods for making them are provided. The board includes a set gypsum core having a fibrous glass at disposed thereon. The core includes a water-resistant additive in at least a minimum amount sufficient to impart to the board an ASTM C-473 water absorption value of less than about 10%. This additive includes organohydrogenpolysiloxane resin added with a portion of the mixing water, or otherwise added in neat form to the process for preparing the slurry.

REFERENCES:
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patent: 4421704 (1983-12-01), Reily
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patent: 4504533 (1985-03-01), Altenhofen et al.
patent: 4525965 (1985-07-01), Woelfel
patent: 4564544 (1986-01-01), Burkard et al.

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