A powder adhesive composition having cement, a dispersible polymer powder; and at least 10% volume of the powder adhesive is an expanded perlite. The cement is at a ratio of between 600-1000% of the mass of the expanded perlite. The powder adhesive composition is an adhesive, and the adhesion strength of the adhesive, is over 0.4 MPa, after 28 days, and after water immersion for at least 20 days.

An inorganic adhesive includes magnesium oxide, magnesium sulfate heptahydrate, silica fume, silica sol, lithium silicate, sodium silicate, citric acid, microcrystalline cellulose, cellulose nanowhiskers, amino trimethylene phosphonic acid, and water.

An inorganic adhesive includes magnesium oxide, magnesium sulfate heptahydrate, silica fume, silica sol, lithium silicate, sodium silicate, citric acid, microcrystalline cellulose, cellulose nanowhiskers, amino trimethylene phosphonic acid, and water.

Described herein is a fire-resistant adhesive coating composition which emits water vapor when exposed to fire. Such compositions comprise an ionic polyacrylate dispersant, aluminum hydroxide, silicate, and an alkoxylated alcohol. In certain embodiments, the composition comprises a solids content of at least about 44.2%, based on the wet weight of the composition. Also described herein are methods for making and using of such coating compositions.

Described herein is a fire-resistant adhesive coating composition which emits water vapor when exposed to fire. Such compositions comprise an ionic polyacrylate dispersant, aluminum hydroxide, silicate, and an alkoxylated alcohol. In certain embodiments, the composition comprises a solids content of at least about 44.2%, based on the wet weight of the composition. Also described herein are methods for making and using of such coating compositions.

A packaging or wrapping for a food product, capable of resisting to high temperatures and of eliminating the overpressure generated by the water vapour inside the packaging due to temperature rise, without the same packaging having any aperture communicating its inside and the outside environment. The packaging is also adapted to restrain/reduce the emission of odor-generating substances that are generated during the heating or baking of the packaged food product, with respect to what occurs in the absence of a packaging, or with a packaging provided with apertures.

A packaging or wrapping for a food product, capable of resisting to high temperatures and of eliminating the overpressure generated by the water vapour inside the packaging due to temperature rise, without the same packaging having any aperture communicating its inside and the outside environment. The packaging is also adapted to restrain/reduce the emission of odor-generating substances that are generated during the heating or baking of the packaged food product, with respect to what occurs in the absence of a packaging, or with a packaging provided with apertures.

The present invention relates to an alkali metal silicate coating formed from alkali metal silicate represented by the chemical formula M.sub.2O.nSiO.sub.2 and lithium silicate represented by the chemical formula Li.sub.2O.mSiO.sub.2, wherein M is selected from sodium, potassium, or a mixture thereof, n is from 2.9 to 3.7, m is from 4.2 to 4.8, and the molar ratio of M.sub.2O.nSiO.sub.2 to Li.sub.2O.mSiO.sub.2 is from 2.2 to 4.8; wherein the alkali metal silicate coating has a thickness of from 630 to 1,450 mg/m.sup.2, preferably from 700 to 1,400 mg/m.sup.2, in terms of SiO.sub.2 as measured by fluorescent X-ray spectrometry. The present invention further relates to a preparation method of the coating. The coating of the present invention has excellent heat resistance, hot water resistance and stain resistance, as well as excellent damage resistance.

A method for producing a composite glue composed of an aerogel, an inorganic fiber, and an inorganic adhesive includes the following steps of: (1) mixing step, (2) hydrolysis step, (3) condensation step, (4) aging step, (5) high-temperature solvent replacement step, (6) evaporation and drying step, and (7) composition step. The obtained product thereof is a viscous composite glue composed of the aerogel, and the total content of the aerogel and an inorganic fiber is of 25-90 wt % after dried. Additionally, the obtained product can be used at a high temperature of more than 600° C., and has no phenomena of inorganic material decomposition and carcinogen production.

A method for producing a composite glue composed of an aerogel, an inorganic fiber, and an inorganic adhesive includes the following steps of: (1) mixing step, (2) hydrolysis step, (3) condensation step, (4) aging step, (5) high-temperature solvent replacement step, (6) evaporation and drying step, and (7) composition step. The obtained product thereof is a viscous composite glue composed of the aerogel, and the total content of the aerogel and an inorganic fiber is of 25-90 wt % after dried. Additionally, the obtained product can be used at a high temperature of more than 600° C., and has no phenomena of inorganic material decomposition and carcinogen production.