The invention provides a fire-stopping product, an insulated building façade comprising a fire-stopping product, and a method of making a fire-stopping product. The fire-stopping product comprises a resilient, porous material at least partially impregnated with an intumescent agent and held in compression by a releasable restraint. When exposed to hot gases from a fire, the restraint yields to release the resilient, porous material in an initial expansion, thereby exposing the intumescent agent to the hot gases and allowing rapid intumescence to occur. When implemented in a ventilated building façade, the fire-stopping product is able to close an air gap in a short amount of time.

The invention provides a fire-stopping product, an insulated building façade comprising a fire-stopping product, and a method of making a fire-stopping product. The fire-stopping product comprises a resilient, porous material at least partially impregnated with an intumescent agent and held in compression by a releasable restraint. When exposed to hot gases from a fire, the restraint yields to release the resilient, porous material in an initial expansion, thereby exposing the intumescent agent to the hot gases and allowing rapid intumescence to occur. When implemented in a ventilated building façade, the fire-stopping product is able to close an air gap in a short amount of time.

The present invention provides alumina hydrate particles, a flame retardant and a resin composition that are each for an electric wire/cable covering material improvable in flame retardancy and mechanical properties while the covering material keeps acid resistance; such an electric wire/cable; and producing methods thereof. The alumina hydrate particles of the present invention for electric wire/cable covering material have an average particle size of 0.5 to 2.5 μm, and having a primary particle variation R of 24% or less, the variation R being represented by the following expression:
primary particle variation R (%)=“standard deviationσ(μm) of major axis diameters of the primary particles”/“average value(μm) of the major axis diameters of the primary particles”×100.

The present invention provides alumina hydrate particles, a flame retardant and a resin composition that are each for an electric wire/cable covering material improvable in flame retardancy and mechanical properties while the covering material keeps acid resistance; such an electric wire/cable; and producing methods thereof. The alumina hydrate particles of the present invention for electric wire/cable covering material have an average particle size of 0.5 to 2.5 μm, and having a primary particle variation R of 24% or less, the variation R being represented by the following expression:
primary particle variation R (%)=“standard deviationσ(μm) of major axis diameters of the primary particles”/“average value(μm) of the major axis diameters of the primary particles”×100.

Disclosed is a flame retardant composition including: (A) 20 to 50 parts by mass of at least one melamine salt selected from the group consisting of melamine orthophosphate, melamine pyrophosphate, and melamine polyphosphate; (B) 50 to 80 parts by mass of at least one piperazine salt selected from the group consisting of piperazine orthophosphate, piperazine pyrophosphate, and piperazine polyphosphate (with the proviso that the total of component (A) and component (B) is 100 parts by mass); (C) 0.01 to 5.0 parts by mass of a silane coupling agent; and (D) 0.01 to 1.0 part by mass of an aliphatic dicarboxylic acid ether ester compound represented by general formula (1). The details of general formula (1) are as described in Description.

Disclosed is a flame retardant composition including: (A) 20 to 50 parts by mass of at least one melamine salt selected from the group consisting of melamine orthophosphate, melamine pyrophosphate, and melamine polyphosphate; (B) 50 to 80 parts by mass of at least one piperazine salt selected from the group consisting of piperazine orthophosphate, piperazine pyrophosphate, and piperazine polyphosphate (with the proviso that the total of component (A) and component (B) is 100 parts by mass); (C) 0.01 to 5.0 parts by mass of a silane coupling agent; and (D) 0.01 to 1.0 part by mass of an aliphatic dicarboxylic acid ether ester compound represented by general formula (1). The details of general formula (1) are as described in Description.

Provided is a flame retardant composition which can be used without solidification for a long period of time, and has suppressed odor derived from the Tsunomata seaweed glue. The flame retardant composition contains boric acid or a borate, a Tsunomata seaweed glue, a zeolite powder and water. The flame retardant composition may further contain lime. The flame retardant composition may contain one or more combinations of an aluminum powder, a copper powder and a silver powder. It is preferred that the boric acid or borate is contained in an amount of 5 to 35% by mass relative to the whole, the Tsunomata seaweed glue is contained in an amount of 1 to 10% by mass relative to the whole, the zeolite powder is contained in an amount of 0.3 to 35% by mass relative to the whole, the hydrated lime is contained in an amount of 0.5 to 10% by mass relative to the whole, one or more combinations of the aluminum powder, the copper powder and the silver powder are contained in an amount of 0.3 to 3% by mass relative to the whole, and water is contained in an amount of 50 to 85% by mass relative to the whole.

Provided is a flame retardant composition which can be used without solidification for a long period of time, and has suppressed odor derived from the Tsunomata seaweed glue. The flame retardant composition contains boric acid or a borate, a Tsunomata seaweed glue, a zeolite powder and water. The flame retardant composition may further contain lime. The flame retardant composition may contain one or more combinations of an aluminum powder, a copper powder and a silver powder. It is preferred that the boric acid or borate is contained in an amount of 5 to 35% by mass relative to the whole, the Tsunomata seaweed glue is contained in an amount of 1 to 10% by mass relative to the whole, the zeolite powder is contained in an amount of 0.3 to 35% by mass relative to the whole, the hydrated lime is contained in an amount of 0.5 to 10% by mass relative to the whole, one or more combinations of the aluminum powder, the copper powder and the silver powder are contained in an amount of 0.3 to 3% by mass relative to the whole, and water is contained in an amount of 50 to 85% by mass relative to the whole.

The invention relates to a non-intumescent, waterborne fire-retardant coating composition comprising: (a) at least one binder resin having reactive functional groups comprising both hydroxyl and carboxylic groups, wherein the binder resin has an acid value lower than 40 mg KOH/g resin on solids and an OH value higher than 30 mg KOH/g resin on solids, (b) a crosslinker, capable of reacting with at least some of the functional groups of the binder resin (a), wherein the crosslinker contains a carbodiimide functionality, and (c) at least one fire retardant. The resulting coating has a good adhesion to a variety of substrates, prolonged pot-life, and complies with the requirements of fire resistance in aircraft industry.

Provided is a cable having a sheath composition having flame retardancy and water resistance, and a sheath layer formed of the sheath composition. Specifically, the present invention relates to a sheath composition for simultaneously improving flame retardancy and water resistance of a sheath layer of a cable, which are in a trade-off relation with each other, and physical properties such as heat resistance, hardness, and wear resistance, improving appearance, and reducing manufacturing costs; and a cable having a sheath layer formed of the sheath composition.