Air Products and Chemicals, Inc.

Timothy Jay Roth

William Russell Welliver

F MacGregor Miller

David R Jones, Iv

Kenneth Francis Grzybowski

Carmine Richard Gagliardi

John Robert Brown

Mark S Hudson

Alexander Mishulovich

David Reese Jones

A cementitious composition comprising 0.1 to about 7.5 percent by weight of a solid residual oxidation product from the combustion of an aqueous emulsion of a naturally occurring asphalt from the Orinoco Belt of Venezuela which contains from about 100 to about 1500 ppm by weight of magnesium in the form of a water soluble magnesium salt, which product from the combustion contains magnesium sulfate present in the amount of from about 0.05 to about 4 percent by weight of the cementitious composition and from about 92.5 to about 99.95 percent by weight of a hydraulic silicate cement material.

Modified cement and concrete compositions

Bituminous compositions of enhanced physical/performance properties comprising an oxidation product of a naturally occurring asphalt from the Orinoco Belt of Venezuela and the bitumen base material, and methods for their preparation.

Bituminous compositions having enhanced performance properties

Fire retardant plastic construction materials containing a fire retarding quantity of the oxidation product of certain asphalts.

Fire retardant plastic construction material

A set control composition and/or interground blend of materials including a calcium sulfate material and magnesium sulfate.

Modified gypsum compositions

Manufactured aggregates and/or composites having incorporated therein an asphaltic oxidation product.

Manufactured aggregate composite

This invention pertains to a fertilizer and a process for producing the same which incorporates flyash, which is a by-product from the coal fired utility industry, with an organic fertilizing component comprising manure. The flyash and manure are mixed with the resulting mixture compressed by passing the mixture through a roller press thereby forming a sheet and then fracturing the sheet into chips or other particulate form. The water content of the mixture is controlled in an effort to produce particulates having high dry strength.

Fertilizer chip and process for making same

This invention relates to an improved process for producing gypsum calcium sulfate dihydrate flakes from powdered gypsum calcium sulfate dihydrate obtained from the desulfurization of flue gas by the wet limestone process. The flakes have sufficient size and strength such that the gypsum calcium sulfate dihydrate can be handled and processed in conventional equipment commonly used by wallboard manufacturers and others in the construction industry, The intermediate calcium sulfate dihydrate from the desulfurization process is dewatered to about 5 to 12% by weight and then compressed into a thin sheet under a compaction or compression load of 4 tons force to 15 tons force per linear inch of sheet width. A linear speed of from 0.5 to 2.5 feet per second is maintained during compaction providing a compaction residence time of from about 0.2 to 1.2 seconds. An elevated temperature is maintained during the compaction process to enhance the reformation of the crystal size and shape of the gypsum calcium sulfate dihydrate. The combination of pressure and temperature on the moist gypsum calcium sulfate dihydrate alters the physical characteristics of the gypsum calcium sulfate dihydrate, thereby resulting a sheet which breaks into hard flakes on exit from the compaction zone.

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Allentown, PA, United States of America

Timothy Jay Roth