Fire resistant cured binder for fibrous mats
AssigneeGeorgia-Pacific Resins, Inc.
InventorLarry R. Graves
Life of this patent
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Abstract
A binder composition for fibrous mats, preferably inorganic fibrous mats, which is fire resistant when cured is provided. The binder composition comprises a stable mixture of an aqueous aldehyde condensation polymer-based resin, a fire retardant latex and, optionally, an effective amount of an aqueous silica colloid, wherein the weight ratio of the latex to the resin is at least 1:1 on a non-volatile weight basis. The effective amount of the silica colloid is an amount sufficient to enhance the flame resistant property of the binder composition after curing and yet remain compatible with the components of the binder composition prior to curing.
Claims26
A binder composition suitable for impregnating and coating fibrous mats and for bonding the fibers thereof when cured, wherein said binder composition is fire resistant when cured, said binder composition comprising:
- a stable mixture of
- a fire resistant latex,
- a thermosetting, aldehyde condensation polymer, and an effective amount of an aqueous silica colloid to enhance the fire retardant properties of the cured binder composition and yet remain compatible with the other components of the binder composition prior to curing,
- wherein the weight ratio of said latex to said aldehyde condensation polymer is at least 1:1 on a non-volatile weight basis.
A binder composition suitable for impregnating and coating fibrous mats and for bonding the fibers thereof when cured, wherein said binder composition is fire resistant when cured, said binder composition comprising:
- a stable mixture of
- 50to about 95 percent by weight of a fire resistant latex, and
- about 5 to 50 percent by weight of a thermosetting, modified urea-aldehyde condensate, based on the weight of said latex and said condensate, and
- 0.1 to about 10 percent by weight of an aqueous silica colloid, based the weight of said condensate, on a non-volatile materials weight basis,
- wherein the modified urea-aldehyde condensate is prepared by reacting urea, an aldehyde and a modifying agent selected from the group consisting of aqueous ammonia, anhydrous ammonia, a primary polyamine and a combination thereof during the condensation reaction.
A fire resistant composition suitable for bonding the fibers of fibrous mats, said composition comprising:
- a cured mixture of
- a fire resistant latex,
- a thermosetting, aldehyde condensation polymer, and
- an effective amount of an aqueous silica colloid to enhance the fire retardant properties of said composition after curing and yet remain compatible with the other components of said composition prior to curing,
- wherein the weight ratio of said latex to said aldehyde condensation polymer is at least 1:1 on a non-volatile weight basis.
A binder composition suitable for impregnating and coating fibrous mats and for bonding the fibers thereof when cured, said binder composition consisting essentially of:
- a stable mixture of a fire resistant latex and an aidehyde condensation polymer,
- wherein said stable mixture contains
- about 50 to about 95 percent by weight of said fire resistant latex based on the weight of said polymer and latex, and
- about 5 to 50 percent by weight of said aldehyde condensation polymer based on the weight of polymer and latex,
- wherein said weight percentages are based on non-volatile materials, and
- wherein said aldehyde condensation polymer is a urea-aldehyde condensate modified with ammonia or a polyamine.
Dependencies are inferred from the claim text.