The present invention relates to an intumescent coating composition comprising (a) the reaction product of a tetra-alkoxylorthosilicate or partially condensed oligomer thereof and an epoxy resin containing hydroxyl groups, wherein the alkoxy groups are independently selected from C.sub.1-C.sub.20 alkoxy groups (b) one or more spumifics, and (c) one or more metal oxides and/or hydroxides. The intumescent coating composition provides excellent fire performance and char strength. The invention also relates to substrates coated with the intumescent coating composition, and a method of protecting structures from heat/fire.

The present disclosure relates to a housing for an engine component. The housing comprises a wall made of a light alloy. An epoxy primer coating having at least one layer of a primer containing at least 80 wt. % epoxy covering the wall. An intumescent paint coating having at least one layer of intumescent paint directly covering the epoxy primer. And, an epoxy top coat directly covering the intumescent paint coating, the epoxy top coat having at least one layer of a top coat containing at least 80 wt. % epoxy.

An intumescent composition capable of withstanding temperature cycling as low as −60° C. without cracking is contemplated. The composition also exhibits enhanced durability due to its resistance to water absorption, its acceptable cure times, and (when exposed to fire conditions) its well-adhered, foamed char layer.

One or more embodiments of the present invention provides a process for the preparation of a coating or layer on a substrate, in which process a mixture comprising one or more polyurethane dispersions, one or more flame retardants, which can be halogen-based or halogen-free, one or more foam stabilizers and optionally one or more crosslinkers is mechanically foamed and then applied on a substrate as a foam, optionally followed by adding flocking fibres, and subsequently dried, wherein the foam has flame retardant properties and remains present as a stable pressure resistant dried foam.

A fire protection composition contains a binder on the basis of an alkoxysilane-functionalized polymer and a liquid carbon supplier. The fire protection composition allows application in a simple and rapid manner of coatings having the layer thickness required for the particular fire resistance time, the layer thickness being reduced to a minimum while achieving a good fireproofing effect. The fire-protection composition is formulated as a multi-component system. The fire-protection composition is particularly suitable for fire protection, especially as a coating of construction elements such as steel carriers.

A silicone elastomer composition which is generally storage stable, and cures to an elastomeric body, comprising; (i) an organopolysiloxane polymer having at least two hydroxyl or hydrolysable groups; (ii) a siloxane and/or silane cross-linker having at least three groups per molecule which are reactable with the hydroxyl or hydrolysable groups in the organopolysiloxane polymer (i); (iii) a solid organosilicate resin which is substantially unreactive with components (i) and (ii) and comprising R.sub.3.sup.2SiO.sub.1/2 and SiO.sub.4/2 siloxane units, wherein the molar ratio of the R.sub.3.sup.2SiO.sub.1/2 siloxane units to SiO.sub.4/2 siloxane units is from 0.5:1 to 1.2:1, and R.sup.2 is selected from hydrocarbon groups; and optionally (iv) a suitable condensation cure catalyst. The solid organosilicate resin (iii) is generally utilised to create a low modulus room temperature vulcanisable (RTV) silicone composition which when cured may be used as a coating, an adhesive or a sealant having high movement capability.

A flexible foam composition includes a flexible foam body having a surface, which flexible foam is polyurethane and/or latex flexible foam, and an expandable graphite layer on the surface or within the foam surface adjacent to the surface. The flexible foam composition with the expandable graphite layer imparts improved flame retardant properties to the composition.

Aqueous coating compositions as well as methods of using thereof are described. The coating compositions can be a two-part aqueous coating composition. The first coating component can comprise one or more polymers and the second coating component can comprise a catalyst such as phosphoric acid. The first coating component and the second coating component can be provided as separate aqueous compositions. The first coating component and a second coating component that can be co-applied (e.g., simultaneously or sequentially) to a surface form a rapid set coating.

An innovative reactive resin system can be used for intumescent coating. Intumescent coatings are used in particular for fire protection of metallic components, such as girders in structural engineering. In a fire scenario, these coatings are reactively foamed and so form a fire-resistant insulating layer with low thermal conductivity around the metal girder, with the resultant insulation retarding premature failure of this component. The resin systems are prepared by an innovative process where the monomer fraction is polymerized only up to a maximum degree of 70%. The glass transition temperature of this polymeric component of the resultant composition is particularly low.

An intumescent composition based upon modifications to tannic acid (TA), including certain additives, is contemplated. Such compositions may be incorporated in epoxy and other resin-based coatings. The resulting composition produces a novel, lightweight, and extremely effective intumescent char having a density of 1.5 to 4.0 mg/cm.sup.3.