A method for the deposition of an organic intumescent coating on a glass sheet, includes the preparation of an organic intumescent coating composition by mixing a latex having a pH from 4 to 6 and an intumescent agent chosen from thermally degradable polycarboxylic acids, and the application of the organic intumescent coating composition to the glass sheet.

A fire-resistant polyurethane composition and a fire-resistant product comprising the fire-resistant polyurethane composition. The fire-resistant polyurethane coating composition comprises: an aromatic isocyanate component, a polyol component, and an intumescent component; wherein the aromatic structure in the polyurethane backbone is ≥24 wt %. The fire-resistant polyurethane composition could provide surprisingly good intumescent layer toughness as well as good insulation performance.

The present disclosure provides a thermal resistant water blocking tape for use in an optical fiber cable. The thermal resistant water blocking tape includes a water blocking tape. The water blocking tape is resistant to water penetration. The water blocking tape is defined by a top surface and a bottom surface. In addition, the water blocking tape has an intumescent material that reduces transmission of thermal radiations across the thermal resistant water blocking tape at elevated temperature. The intumescent material may be coated on the water blocking tape. The intumescent material may produce insulating carbonaceous foam at elevated temperature.

The present invention relates to environmentally friendly flame retardant materials based on renewable resources and industrial waste streams. The materials have advantageous intumescent properties, charring, gas phase radical traps and thermal stability. The present invention further relates to processes for the preparation of the flame retardant materials and to plastic materials comprising said flame retardant materials.

A mixture curable in the presence of a suitable metallic catalyst to provide an intumescent coating material. The mixture comprises: a siloxane polymer; a cross-linker for cross-linking the siloxane polymer; filler, wherein the filler comprises char reinforcing filler; and an intumescent ingredient. The intumescent ingredient comprises a phosphorus containing compound or a composition comprising a phosphorus containing compound. The mixture comprises 5 to 20% by weight of the phosphorus containing compound or composition comprising a phosphorus containing compound. The intumescent ingredient comprises 10 to 40% by weight expandable graphite.

An intumescent composition based upon modifications to poly acrylic acid (PAA), including certain additives, is contemplated. Such compositions may be incorporated in epoxy and other resin-based coatings. The PAA may be modified through the use of one or more mineralizing additives to promote char formation.

An intumescent coating composition consisting of a binder system and a two-component intumescent package is described. Tannic acid (TA) and ammonium polyphosphate (APP) have exhibited sufficient characteristics to serve as char formers (via TA), blowing agents (via TA), and an acid source (via APP). Such compositions may be incorporated in epoxy and other resin-based coatings. The resulting composition should provide comparable intumescent performance in comparison to existing/available products.

A novel method of improving the water and leaching resistances and durability of a fire retardant-treated wood product by using a chemical fire retardant composition in which crosslinking polyvinyl acetate (XPAVc or X-PVAc) is applied as a protective coating on wood over the fire retardant layer. An additional crosslinking polyvinyl acetate coating layer or one or more layers of acrylic, alkyd, epoxy, lacquer, polyester, polyurethane, silicone coatings, vinyl ester, or the like may further cover the cured crosslinking polyvinyl acetate primer and then dried or cured.

An intumescent mesh has a flexible grid with a plurality of strands that form a series of openings in the flexible grid, and an intumescent coating applied to the flexible grid. The intumescent coating is made of an expandable graphite and a polymer-based carrier as ingredients and having an activation temperature above which the intumescent coating swells. The grid is sized such that the intumescent coating permits airflow through the flexible grid until the intumescent coating is exposed to temperatures at or above the activation temperature, whereupon the intumescent coating swells to seal the openings and prevent air flow through the flexible grid.

An intumescent mesh comprises a mesh structure woven from strands that define openings in the mesh structure, the strands being made from non-metal materials. An intumescent material is applied to the strands, the intumescent material being carried such that, in an inactivated state the intumescent material permits airflow through the openings in the mesh structure, and in an activated state, the intumescent material swells and restricts airflow through the openings in the mesh structure. The intumescent mesh is able to withstand a temperature of at least 980° C. for at least 10 minutes prior to failure.