The Dow Chemical Company

Horst G Langer

Thomas P Brady

Jere D Fellmann

George A Doorakian

Patrick H Martin

Issam A Khoury

Marsha A Paul

Kent D Campbell

A melt processable, green ceramic precursor powder is prepared from a solution containing a melt processable organic polymer and a polyahl coordination complex. The powder may be melt processed, as in extrusion, hot pressing, or injection molding, to form preceramic greenware useful in electronics applications.

Melt processable, green, ceramic precursor powder

A process for growing crystals of berlinite, comprises the steps of:

Process for growing berlinite crystals

Amorphous, porous metallo phosphates wherein the metal is Al, Ti, Ba, Zr, Hf, V, Nb, Ta, Cr, Mo, W, Mg, Sc, Cu, Fe and La or mixtures thereof, having average pore diameter from about 5 Angstroms to about 50 Angstroms that are useful as catalysts and catalyst supports.

Porous amorphous metallo phosphates process for preparing porous

A process for preparing a phosphate ester which contains at least one terminal epoxide moiety, the process comprising contacting under reaction conditions, optionally in the presence of water, at least one phosphoric acid ester with an amount of an epoxide having an epoxy equivalent greater than one. The product compositions can be cured by standard epoxide curing agents to provide protective coatings having intumescent properties.

Epoxy phosphate compositions

High purity berlinite is prepared by formation of an organoaluminum phosphate hydrogel in an organic solvent and subsequently hydrolyzing the hydrogel by reaction with water at pH less than or equal to 3.0. The berlinite is useful as a replacement for silicon-based quartz in electronic applications and in piezoelectric devices.

Preparation of high purity berlinite

The invention is an improved process for preparing epoxy resin/phosphoric acid reaction products having high enough phosphomonoester contents to be water-dispersible (as base salts) and low enough free acid contents to yield water-resistant cured coatings. The phosphoric acid is provided as an acid source material deriveable by the reaction of a hydroxylic P--OH functionality-limiting agent (blocking agent) with phosphoric anhydride as such or as a reaction product thereof with less than six molecular proportions of water. A resin solvent, which may also function as the P--OH blocking agent but otherwise is inert and acceptable as part of the final coating resin formulation, is employed as the reaction medium. The epoxide/acid reaction is allowed to proceed, effectively in the absence of water, until the content in the reaction mixture of species indistinguishable from H.sub.3 PO.sub.4 by base-titration has dropped to a minimum. Then enough water to hydrolyze the phosphopolyesters present is added and the hydrolysis is carried out, thereby cleaving the ester groups formed from the blocking agent and generating the P--OH groups needed for salification. The disclosed resin compositions are of particular utility for coating the interiors of beverage cans.

Process for epoxy phosphate coating resins

Glycol ether partial esters of the formula ##STR1## where R is a specified substituent formed by reaction of monohydroxyl reactants of (poly)glycols with phosphorus pentoxide.

Partial esters of polyphosphoric acid

Derivatives of polyphosphoric acid partial esters of the formula ##STR1## wherein R is the remnant of a (poly)glycol monoether, phenol, or alkanol provided that in at least one occurrence R is the remnant of a (poly)glycol monoether, and M is a positive counterion of valence n are disclosed.

Derivatives of polyphosphoric acid partial esters

Derivatives of polyphosphoric acid partial esters of the formula ##STR1## wherein R is the remnant of a (poly)glycol monoether, phenol or alkanol provided that in at least one occurrence R is the remnant of a (poly)glycol monoether, and M is a positive counterion of valence n are disclosed.

Metal alkoxides are reacted with phosphorus pentoxide to produce metal organopolyphosphate coordination polymers.

Preparation of metal organopolyphosphate coordination of complexes

Cellulosic substrates, e.g., wood, textiles, or paper, have increased fire resistance when there are added thereto one or more compounds of the formula ##STR1## wherein M and R are specified substituents.

Fire-retardant composition containing derivatives of polyphosphoric acid

Free flowing particulate pentachlorophenol having little or no tendency to bloom is obtained by incorporating about 0.5-10 percent by weight of benzyl alcohol. Prills made from molten pentachlorophenol containing the benzyl alcohol are a preferred form.

Growing community of inventors

Wayland, MA, United States of America

Horst G Langer