Light weight metal fire door core

Details Light weight metal fire door core Light weight metal fire door core

2011-04-19

2011-04-19

Anthony, Joseph D (Department: 1761)

Compositions: coating or plastic

Coating or plastic compositions

Inorganic settable ingredient containing

C106S779000, C106S780000, C106S785000, C156S039000, C156S042000, C156S045000, C156S292000, C428S070000, C428S071000, C428S075000, C428S076000, C428S340000, C428S703000, C252S062000, C252S601000, C052S309150

Reexamination Certificate

active

07927420

ABSTRACT:
The present invention describes a fire resistant building material composition, useful for example as a fire door core and to a method of making this composition where the building material of the present invention is prepared from an aqueous slurry of calcined gypsum, paper fibers, a water insoluble organic binder, fiber reinforcement and a set retarder.

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