The invention relates to diorganylphosphinic salts containing 0.0001% to 99.9999% by weight of iron, to a process for preparation thereof and to the use thereof.

A composition forming an insulating layer is described, whereby a binder based on an alkoxysilane-functionalized polymer carries the alkoxy-functionalized silane group, containing water and an insulation layer-forming additive. The composition according to the invention results in a relatively high expansion rate, enabling coatings to be applied to achieve the layer thickness required for the respective fire resistance duration in a simple and rapid manner, whereby the layer thickness is reduced to a minimum but offers significant insulating effect. The composition according to the invention is particularly suitable for fire protection, especially for the coating of steel components, such as columns, beams, frame members, in order to increase the fire resistance duration.

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.

The invention relates to a composition which contains a binder based on epoxy-thiol. Said claimed composition makes it possible to apply, in a simple and rapid manner, coatings that have the layer thickness required for the respective fire resistance grading, the layer thickness being reduced to a minimum while achieving a good fire protection effect. Said claimed composition is particularly suitable for fire protection, especially as a coating for cables and cable routes for increasing the fire resistance grading.

The present invention relates to an intumescent coating composition, an intumescent multi-component coating product, methods for using the intumescent coating composition or the intumescent multi-component coating product, substrates coated with the intumescent coating composition or the intumescent multi-component coating product. The intumescent coating composition and the intumescent multi-component coating product of the present invention may have excellent low temperature resistance properties and anti-fire properties.

Fire-resistant overlays, panels, and processes for making and using same. The fire-resistant overlay can include a fiber mat that can include a plurality of fibers secured to one another. The fire-resistant overlay can include a coating disposed on at least one of a first and a second side thereof. The coating can include a blowing agent and an at least partially cured intumescent resin. When a side of the fiber mat that includes the coating disposed thereon is subjected to a modified ASTM D6413-99 test, where the test is modified by using a run time of 5 minutes instead of 12 seconds, a char can be produced. The char can have a density of about 0.05 g/cm.sup.3 to about 0.2 g/cm.sup.3, a length of about 8.8 cm to about 10.2, a height of about 1.25 cm to about 2.5 cm, and an expansion ratio of about 10 to about 17.5.

A method includes coating a substrate to provide a flame resistant substrate. In an embodiment, the method includes exposing the substrate to a cationic solution to produce a cationic layer deposited on the substrate. The cationic solution comprises cationic materials. The cationic materials comprise a polymer, a colloidal particle, a nanoparticle, a nitrogen-rich molecule, a geopolymer, a carbon-based filler, or any combinations thereof. The method also includes agitating the substrate. The method further includes exposing the cationic layer to an anionic solution to produce an anionic layer deposited on the cationic layer to produce a layer comprising the anionic layer and the cationic layer. The anionic solution comprises a layerable material.

The invention relates to a heat-resistant coating composition comprising a one or more epoxy resins and one or more poly sulfide curing agents, which also comprises one or more spumifics, one or more carbonifics and one or more sources of phosphoric acid; wherein the mole ratio of thiol groups in the polysulfide(s) to epoxy groups in the epoxy resin(s) is in the range of from 0.20 to 0.50; and wherein the weight ratio of carbonific(s) to spumific(s) is no more than 0.48 or the weight ratio of carbonific(s) to source(s) of phosphoric acid is no more than 0.38, or both.

This disclosure provides high-efficiency and low-energy-consumption synthetic methods of a series of phosphorus-nitrogen-based intumescent flame retardants and the use thereof in paint flame retarding. 1 part by weight of a phosphorization agent and 0.5-4.0 parts by weight of a nitrogen-containing foaming agent are uniformly mixed and stirred at room temperature, and an amount of water is further added to emit heat and initiate reaction. 0.5-3.0 parts by weight of a charring agent and 0.5-4.0 parts by weight of a hydroxy-containing polyfuctional crosslinking agent are then added, and reacted with stirring. An amine compound is finally added for neutralization until pH value is 5-8, and solid liquid separation is performed. The solid portion is dried to obtain a main body portion of a phosphorus-nitrogen-based intumescent flame retardant. The resultant filtrate is diluted with - volume of water, and a flame retardant product is obtained. This flame retardant product is mainly used in the flame retarding of paper and cotton fabrics. The main body and different proportions of other nitrogen-containing foaming agents and charring agents are uniformly mixed and pulverized into nano- and micro-scale, and a phosphorus-nitrogen-based intumescent flame retardant is obtained. The nano- and micro-scale phosphorus-nitrogen intumescent flame retardant is mixed into a paint at a weight ratio of 15-30%, to obtain a flame-retardant paint which is capable of maintaining mechanical and physical properties of the paint. The phosphorus-nitrogen-based intumescent flame retardant of this disclosure is an intumescent flame retardant having a synergistic effect of phosphorus and nitrogen.

A composition that forms an insulating layer is described, which contains a thiol-ene-based binder. With the composition according to the invention, the expansion rate of which is relatively high, coatings having the layer thickness necessary for the respective fire resistance time can be applied simply and quickly, the layer thickness being reduced to a minimum and a highly insulating effect still being achieved. The composition according to the invention is particularly suitable for fire protection, in particular as a coating of metallic and/or non-metallic substrates, for example steel components such as pillars, beams or truss members, to increase the fire resistance time.