W. R. Grace Co.

W. R. Grace Co.-conn.

John J Blouin

Michael T Roland

Martin B Sherwin

Preston L Veltman

Disclosed is an improved method of extracting neem seeds. The method involves co-solvent extracting neem seeds with a solvent mixture of a nonpolar, aliphatic hydrocarbon solvent and a polar solvent to simultaneously remove the hydrophilic and hydrophobic extracts from the neem seeds. The method provides novel neem extract mixtures which contain both the hydrophobic and hydrophilic portion of the neem seeds. The extract mixtures may be further extracted to yield an azadirachtin-containing solid product having greater than 10 weight percent of azadirachtin.

Co-extraction of azadirachtin and neem oil

A spray-dried foliar fertilizer for enhancing plant nutrition and health, prepared by spray drying nutrient compounds. The foliar fertilizer is amorphous, free-flowing and water dispersible and may be applied directly to the plant foliage by dusting or spraying.

Spray dried water dispersible fertilizer

Disclosed is an improved method of extracting neem seeds. The method involves co-solvent extracting neem seeds with a solvent mixture of a nonpolar, aliphatic hydrocarbon solvent and a polar solvent to simultaneously remove the hydrophilic and hydrophobic extracts from the neem seeds. The method provides novel neem extract mixtures which contain both the hydrophobic and hydrophilic portion Of the neem seeds. The extract mixtures may be further extracted to yield an azadirachtin-containing solid product having greater than 10 weight percent of azadirachtin.

A process is disclosed whereby a depyrogenated solution comprising one or more amino acids is converted to a dried, amorphous product by spray drying. The solution optionally may contain one or more additional components, such as salts, buffers, lipids, vitamins, trace elements and electrolytes. Products may be prepared according to this method which are suitable for enteral or parenteral nutritive therapeutic use.

Process for spray drying amino acid compositions

A polyvinyl alcohol-aldehyde reaction product is produced continuously in a rotating contactor by contacting solid particles of polyvinyl alcohol with the aldehyde in an acidic aqueous salt solution. The product can be dried and then sieved to remove oversize particles. A preferred aldehyde is either formaldehyde or glutaraldehyde which reacts with the polyvinyl alcohol to produce a reaction product that can be used as a fluid loss control agent in oil fields.

Drilling fluids made from solid, free-flowing, continuously-made, water

A process for preparing L-aspartic acid by contacting fumarate ion-containing solution with aspartase or aspartase-producing microorganisms, adding maleic acid to insolubilize or precipitate the L-aspartic acid, isomerizing maleic acid in the supernatant liquid to form fumaric acid and recycling the fumaric acid into contact with the enzyme or microorganisms.

Process for preparing L-aspartic acid

A polyvinyl alcohol-aldehyde reaction product is produced continuously in a rotating contactor by contacting solid particles of the polyvinyl alcohol with the aldehyde in an acidic aqueous salt solution. The product can be dried and then sieved to remove oversize particles. A preferred aldehyde is either formaldehyde or glutaraldehyde which reacts with the polyvinyl alcohol to produce a reaction product that can be used as a fluid loss control agent in oil fields.

Continuous process for making solid, free-flowing water dispersible

A method for forming dried, solid, particulate product from complex sugar solutions by drying the solution in a current of heated air and in the presence of separately introduced recycled dried solids which have undergone additional conditioning to have a moisture content of not greater than about 0.5 percent therein.

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Catonsville, MD, United States of America

John J Blouin