Disclosed are an intumescent fire-retardant coating with ultra-high corrosion resistance and a preparation method thereof. The fire-retardant coating is composed by water, wetting and dispersing agent, defoaming agent, composite carbon-forming catalyst, composite blowing agent, pentaerythritol, titanium dioxide, Mg(OH).sub.2, mica powder, kaolin, anti-rust pigment, aluminum tripolyphosphate, VAE emulsion, freeze-thaw agent, film-forming aid, and thickener. On the basis of the existing fire-retardant coatings, the present disclosure adds a series of anti-corrosion, heat insulation fillers and salt spray resistance additives to achieve a certain salt spray resistance effect. The fire-retardant coating of the present disclosure has both fire-retardant and anticorrosive functions, does not contain organic solvents, is low in price, has high construction tolerance, and has broad application prospects in the field of intumescent fire-retardant coatings.

A urethane resin composition having properties suitable for forming a building insulation layer without adding a foam stabilizer in a urethane resin composition having at least quasi-incombustibility. A urethane resin composition for forming a foam that constitutes a insulation material for a building includes a foam having at least quasi-incombustibility in a heat-release test complying with ISO-5660, the urethane resin composition containing at least a polyisocyanate compound, an ester polyol compound, a trimerization catalyst, an additive, and a non-silicon surface adjuster, and by not containing a foam stabilizer, the additive including red phosphorus as an essential component and being combined with a phosphate-containing flame retardant and/or a chlorine-containing flame retardant.

The present invention relates to a fire protection composition comprising a component A and a component B. Component A comprises an epoxy liquid resin and ammonium polyphosphate. Component B comprises an adduct B1 of (i) at least one polyamine having at least three amine hydrogens reactive toward epoxide groups with (ii) at least one epoxide, an ether group-containing aliphatic primary diamine B2, and an aliphatic or cycloaliphatic primary diamine B3. The fire protection composition has good adhesion to metal, and after passing through burning-in ovens in the automotive industry still shows good fire protection values with a low mass loss and is suitable for spray application.

The present invention relates to a fire protection composition comprising a component A and a component B. Component A comprises an epoxy liquid resin and ammonium polyphosphate. Component B comprises an adduct B1 of (i) at least one polyamine having at least three amine hydrogens reactive toward epoxide groups with (ii) at least one epoxide, an ether group-containing aliphatic primary diamine B2, and an aliphatic or cycloaliphatic primary diamine B3. The fire protection composition has good adhesion to metal, and after passing through burning-in ovens in the automotive industry still shows good fire protection values with a low mass loss and is suitable for spray application.

Formulations comprising from 10 to 80% by weight of the formulation of a halogenated epoxy resin; from 1 to 15% by weight of the formulation of an antimony based fire retardant; from 1 to 10% by weight of the formulation of an inorganic or non-polymeric organic phosphorous containing fire retardant; and from 1 to 30% by weight of the formulation of a curative system are provided. The formulations are particularly suitable for producing aircraft interior composite components having good fire retarding properties, low smoke emission, low smoke toxicity and low heat release properties. The formulations also have excellent processing and mechanical properties. Further components may be included in the compositions to improve various properties, including the fire retarding, low smoke emission, low smoke toxicity and low heat release properties and to also further improve the processing and mechanical properties, including toughness. Compositions produced from the formulations have excellent processing and mechanical properties, and may also have good surface finishes.

A process for preparing a flame retardant composition, the process comprising: adding to a container at least one flame retardant salt, a nitrogen-containing compound, and optionally water; and mixing the contents of the container to give a dispersed mixture or dissolved solution comprising the flame retardant composition; wherein the at least one flame retardant salt comprises an ammonium salt of phosphoric acid; wherein the ammonium salt of phosphoric acid comprises water soluble ammonium polyphosphate (APP); wherein the water soluble ammonium polyphosphate has a total nitrogen as N from about 5 to about 15 weight percent, and a total phosphorus as P.sub.2O.sub.5 from about 30 to about 40 weight percent, based on the total weight of the ammonium polyphosphate (APP).

The present invention provides a polypropylene-polyphenylene ether-polystyrene ternary alloy, including the following components in parts by weight: 100 parts of a polypropylene and a polyphenylene ether and a polystyrene, wherein the polypropylene accounts for 10% to 60%, the polyphenylene ether accounts for 10% to 60%, and the polystyrene accounts for 5% to 30%; 5 parts to 25 parts of a compatibilizer; and 10 parts to 60 parts of a polyphosphate compound. The polypropylene-polyphenylene ether-polystyrene ternary alloy of the present invention has an advantage of a less smoke release amount during melt.

A prepreg including an epoxide resin matrix system and fibrous reinforcement, at least partially impregnated by the epoxide resin matrix system, the epoxide resin matrix system having the components: a. a mixture of (i) at least one epoxide-containing resin and (ii) at least one catalyst for curing the at least one epoxide-containing resin; and b. a plurality of solid fillers for providing fire retardant properties to the fibre-reinforced composite material formed after catalytic curing of the at least one epoxide-containing resin, and wherein the fibrous reinforcement is a woven fabric ply of an interwoven mixture of glass fibres and carbon fibres, the woven fabric ply has a weight of from 350 to 550 g/m.sup.2 and is from 40 to 95 wt % glass fibres and from 5 to 60 wt % carbon fibres, each based on the weight of the woven fabric ply, and the proportion by weight of carbon fibres, expressed as C in wt %, in the woven fabric ply is defined by the formula:

[00001]$C\ge \left(-0.0048W+2.0858\right)\times 100\%,$ where W is the weight of the woven fabric ply in g/m.sup.2,
and the proportion by weight of glass fibres, expressed as G wt %, in the woven fabric ply is defined by the formula: G=(100−C) %.

A polymer having a backbone and a side unit of 9,10-dihydro-9-oxa-10-phosphaphenanthrene 10-oxide bonded thereto, where the backbone of the polymer includes at least one heterocyclic moiety. There is also provided a process for producing the polymer as defined herein as well as a flame retardant polyolefin formulation including the polymer as defined herein and a moulded article including the flame retardant polyolefin formulation as defined herein.

The invention relates to a glass fiber filled flame retardant polypropylene composition comprising (A) a polypropylene-based polymer, (B) a first flame retardant in an amount of 15 to 40 wt % of the total composition, wherein the first flame retardant is in the form of particles comprising ammonium polyphosphate and at least one phosphate selected from the group consisting of melamine phosphate, melamine polyphosphate, melamine pyrophosphate, piperazine phosphate, piperazine polyphosphate, piperazine pyrophosphate, 2-methylpiperazine monophosphate, tricresyl phosphate, alkyl phosphates, haloalkyl phosphates, tetraphenyl pyrophosphate, poly(2-hydroxy propylene spirocyclic pentaerythritol bisphosphate) and poly(2,2-dimethylpropylene spirocyclic pentaerythritol bishosphonate), (C) a second flame retardant in an amount of 0.1 to 15 wt % of the total composition, wherein the second flame retardant comprises an aromatic phosphate ester and (D) glass fibers in an amount of 5 to 40 wt % of the total composition.