A porous inorganic product which is excellent in acoustic absorptivity and filtration efficiency and is high in strength is produced by bringing suitably sized organic foam particles, which have elasticity and can be shrunk greatly by heating or can be dissolved in a solvent, into contact with one another under pressure so as to deform each thereof, filling the gaps present between the organic foam particles with an inorganic binder such as cement, hardening the inorganic binder to form a harden...

An improved asphalt emulsion composition comprises an oil phase having minor amounts of gilsonite and naphtha and a major amount of asphalt, and a water phase having water and a small amount of a cationic emulsifying agent, wherein the ratio between the oil and water phases is between about 1:1 and 2:1 by weight respectively, the asphalt having a distillation residue penetration of less than 40 dmm at 77.degree. F (25.degree. C).

Molded articles and films prepared from plasticized esters of cellulose and carboxylic acids, particularly plasticized cellulose acetate butyrate, exhibit good toughness when certain poly(alkylene glycols) and esters thereof are employed as the plasticizer.

Stable aqueous emulsions comprising a resinic acid isocyanate, a non-ionic and/or anionic emulsifier and an optionally chlorinated hydrocarbon are used as sizing agents for paper or paper-like materials.

Shaped articles are produced from compositions of sulfur and a particulate inorganic material, at least 10% by weight of the particulate inorganic material being fly ash. The initial compositions are uniform dry blends, and the finished products are formed by converting the sulfur of the composition to molten form and then cooling while, as in casting, the molten material is confined in the desired shape. Use of fly ash provides articles having a hardness more than twice that of sulfur alone and...

A composition which is particularly adapted for coating structural surfaces to provide them with a thermal carrier to protect them from the detrimental effects of fire comprises an aqueous mixture of (a) lithium mica, (b) wollastonite, (c) aluminum trihydrate, (d) nepheline syenite, and (e) soda bicarbonate. The composition may be diluted with water to facilitate application. The composition may also contain raw vermiculite, sodium aluminum sulfate, borax, calcium sulfate, sodium silicate and ot...

Rosin can be rendered non-crystalline and maintain its characteristic chemical and physical properties by the addition of a hard rosin ester.

Synergistically performing flame retarding compositions are provided for cellulosic boards, such as hardboards, particleboards and fiberboards. The synergistically performing compositions consist of three components, namely, an aluminous material, a naturally occurring borate-containing mineral and a phosphate or sulfate salt. Incorporation of these compositions in the boards allows consistent production of flame-retarded products with a Class I or better fire rating.

Improved building compositions are prepared by including in CaO-containing components/SiO.sub.2 -containing components admixtures a small amount of chemically precipitates silicic acid containing flourine as an impurity. A steam-cured building material preferably prepared by first pre-grinding sand with the chemically precipitated silicic acid and water, storing the resulting slurry for at least 0.5 hour and then mixing it with the CaO-containing component. The wet grinding and storing steps hav...

A coating composition comprising; A. an oligomer of Formula I: ##STR1## wherein: R.sup.1 is hydrogen or methyl; R.sup.2 is lower alkylene; R.sup.3 is aliphatic or cycloaliphatic; X is --O-- or --NH--; n is an integer from 2 to 50 inclusive; B. n-vinyl-2-pyrrolidone; C. an acrylic acid ester having a boiling point of at least 200.degree. C at 760 mm Hg.