B - Operations – Transporting – 28 – B
Patent
B - Operations, Transporting
28
B
B28B 1/52 (2006.01) C04B 11/02 (2006.01) C04B 11/024 (2006.01) C04B 24/42 (2006.01) C04B 28/14 (2006.01) C04B 40/02 (2006.01)
Patent
CA 2246490
The present invention relates to an improved composite material; more particularly to a composite gypsum/cellulose fiber material having improved water resistance which is especially useful for making building products. Specifically, the present invention relates to a silicone impregnated gypsum/wood fiber building board having enhanced water resistance through the addition of a siloxane emulsion and preferably a catalyst emulsion to the gypsum and wood fiber during the board manufacturing process.
La présente invention concerne un matériau composite amélioré et plus particulièrement, un matériau composite en plâtre et fibres cellulosiques doté d'une imperméabilité à l'eau améliorée, et qui est particulièrement utile dans la fabrication de matériaux de construction. En particulier, la présente invention se rapporte à un panneau de construction en plâtre et fibres de bois imprégnés de silicone présentant une imperméabilité à l'eau améliorée, laquelle est due à l'adjonction au plâtre et à la fibre de bois d'une émulsion de siloxane et, de préférence, d'une émulsion catalysante au cours du processus de fabrication du panneau.
Company United States Gypsum
Marks & Clerk
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