Abstract: A fire protective tape using a halogen-free mastic coating on a fabric support is provided, the essential components of the mastic being solids including a low fusing ceramic frit, hydrated solids having chemically bonded water which is released as a fire protective water vapor when heated, solids which expand or intumesce during the same heat application to form a porous, expanded or foamy insulating body, solids which have a fire break effect, such as antimony oxide and zinc tetraborate, and binder solids which are thermoplastic resins and serve to bind the solids into a flexible coating when applied, the binder solids being dispersed as an emulsion in water and mixed with the other solids to form a mastic. With further addition of water the mastic is converted to a selected viscosity for application by troweling, coating or spraying.

Abstract: A fire protective mastic is provided, whose essential components are solids including a low fusing ceramic frit, hydrated solids having chemically bonded water which is released as a fire protective water vapor when heated, solids which expand or intumesce during the same heat application to form a porous, expanded or foamy insulating body, solids which have a fire break effect, such as antimony oxide and zinc tetraborate, and binder solids which are thermoplastic resins and serve to bind the solids into a flexible coating when applied, the binder solids being dispersed as an emulsion in water and mixed with the other solids to form a mastic. With further addition of water it is converted to a selected viscosity for application by troweling, coating or spraying.

Abstract: Electric arc and flame protective sheath or boot material for electrical, particularly for high voltage electrical, cables and complex electrical splices, junctures and the like, is precast preferably from a liquid polyvinyl chloride plastisol, preformed into a selected shape of a protective sheath or boot, reinforced and protected against destruction by pre-mixing with a filler of heat resistant fiber containing flame and fire-retardant plasticizer as well as fire-retardant, preferably intumescent, and heat stabilizing substances. The precast sheath or boot is flexible and elastomeric and may be sized and shaped to be slipped upon the cable or joint protectively to further insulate and protect it against electrical arcing, heat or fire.

Abstract: Electric arc and flame protective tape for electrical, particularly for high voltage electrical cables and complex electrical, splices, junctures and the like, comprises a base sheet fabric coated with a thermoplastic resin preferably from a liquid polyvinyl chloride plastisol, reinforced and protected against destruction by pre-melting with a filler of heat resistant fiber, and containing flame and fire-retardant plasticizer as well as fire-retardant, preferably intumescent, and heat stabilizing substances. The tape is flexible and elastomeric and may be wrapped about the cable or joint, protectively to further insulate and protect it against electrical arcing, heat or fire.

Abstract: A fire protective tape using a halogen-free mastic coating on a fabric support is provided, the essential components of the mastic being solids including a low fusing ceramic frit, hydrated solids having chemically bonded water which is released as a fire protective water vapor when heated, solids which expand or intumesce during the same heat application to form a porous, expanded or foamy insulating body, solids which have a fire break effect, such as antimony oxide and zinc tetraborate, and binder solids which are thermoplastic resins and serve to bind the solids into a flexible coating when applied, the binder solids being dispersed as an emulsion in water and mixed with the other solids to form a mastic. With further addition of water the mastic is converted to a selected viscosity for application by troweling, coatingor spraying.