Louis A Highfill

US Patent:

48030589, Feb 7, 1989

Filed:

May 12, 1988

Appl. No.:

7/193024

Inventors:

Louis A. Highfill - Union MO

Assignee:

Monsanto Company - St. Louis MO

International Classification:

B01F 100
C09K 300
C11D 716
C11D 1706

US Classification:

252135

Abstract:

A composition of matter in particulate, crystalline form. The composition comprises a hydrate-forming phosphate selected from the group consisting of sodium tripolyphosphate, sodium pyrophosphate and trisodium phosphate, between about 0. 1% by weight and about 23% by weight added water in the form of water of hydration said water containing in solution sufficient surfactant to provide the composition from about 0. 20 ppm and about 125 ppm of a surfactant. Methods for preparing such compositions are also disclosed.

US Patent:

53023633, Apr 12, 1994

Filed:

May 3, 1993

Appl. No.:

8/055345

Inventors:

Louis A. Highfill - Union MO
George D. Rozelle - Evans GA

Assignee:

Monsanto Company - St. Louis MO

International Classification:

C01B 2530

US Classification:

423315

Abstract:

There is disclosed a process for preparing mixed alkali metal salts of tripolyphosphate. A solution of mixed orthophosphate salts, such as sodium and potassium is dried by spraying the mixture onto a hot tumbling bed of a mixture of phosphate salts. The dried salts are then calcined at a temperature in the range of from about 350. degree. C. to about 600. degree. C. , preferably above 500. degree. C. to form the mixed alkali metal salt of tripolyphosphate.

US Patent:

57730687, Jun 30, 1998

Filed:

Feb 20, 1996

Appl. No.:

8/603301

Inventors:

Barbara B. Heidolph - Wentzville MO
Louis A. Highfill - Washington MO

Assignee:

Solutia Inc. - St. Louis MO

International Classification:

A21D 1000

US Classification:

426551

Abstract:

A novel leavening composition containing hemipotassium phosphate in combination with a carbonate factor. The hemipotassium phosphate is prepared by solution crystallization with removal of water.

US Patent:

50045890, Apr 2, 1991

Filed:

Nov 29, 1989

Appl. No.:

7/442968

Inventors:

George W. Cadwallader - Maryland Heights MO
Louis A. Highfill - Union MO
Gregory D. Kurdys - Temperance MI
Richard S. Turigliatto - Southgate MI

Assignee:

Monsanto Company - St. Louis MO

International Classification:

C01B 1516
C01B 2526

US Classification:

423315

Abstract:

There is disclosed a process from producing granular sodium tripolyphosphate of predetermined particle size by means of calcining sodium orthophosphate dried from water solution and milled to a predetermined particle size. The tripolyphosphate is produced having approximately the same particle size distribution as the orthophosphate feed. Moisturizing the feed prior to calcining increases the assay of the product.

US Patent:

60512008, Apr 18, 2000

Filed:

Jul 13, 1998

Appl. No.:

9/114724

Inventors:

Joan K. Glascock - St. Louis MO
Barbara B. Heidolph - Wentzville MO
Louis A. Highfill - Washington MO

Assignee:

Solutia Inc. - St. Louis MI

International Classification:

C01B 2530

US Classification:

423309

Abstract:

There is disclosed a novel process for preparing hemipotassium phosphate useful as an acidulant for beverages. An equimolar mixture of monopotassium phosphate and phosphoric acid is heated to a temperature above 100. degree. C. cooled with vigorous agitation whereby the liquid loses its free water and crystallizes to a relatively dry crystalline mass. When prepared by the process of this invention hemipotassium phosphate provides a dry, flowable, crystalline product which can be transported and handled easily.

US Patent:

48531448, Aug 1, 1989

Filed:

Dec 19, 1988

Appl. No.:

7/286017

Inventors:

Louis A. Highfill - Union MO

International Classification:

B01F 100
C09K 300
C11D 716
C11D 1706

US Classification:

252135

Abstract:

A composition of matter in particulate, crystalline form. The composition comprises a hydrate-forming phosphate selected from the group consisting of sodium tripolyphosphate, sodium pyrophosphate and trisodium phosphate, between about 0. 1% by weight and about 23% by weight added water in the form of water of hydration said water containing in solution sufficient surfactant to provide the composition from about 0. 20 ppm and about 125 ppm of a surfactant. Methods for preparing such compositions are also disclosed.

US Patent:

50452940, Sep 3, 1991

Filed:

Jan 8, 1990

Appl. No.:

7/461951

Inventors:

Louis A. Highfill - Union MO

Assignee:

Monsanto Company - St. Louis MO

International Classification:

C01B 1516
C01B 2526

US Classification:

423315

Abstract:

A method of producing medium density granular sodium phosphates by agglomerating STP fines with mineral acids, drying the agglomerated fines and screening to recover the dry agglomerated fines.

US Patent:

55781071, Nov 26, 1996

Filed:

Jun 6, 1995

Appl. No.:

8/468697

Inventors:

Robert V. Brill - St. Louis MO
Louis A. Highfill - Washington MO

Assignee:

Monsanto Company - St. Louis MO

International Classification:

C05B 700

US Classification:

71 34

Abstract:

There is disclosed a caking inhibitor for mono-and diammonium phosphates which is water soluble and effective at small concentrations rendering the phosphates acceptable in most utilities without separation of the inhibitor. The inhibitor is sodium sulfate. Effective amounts of this salt range from about 0. 5 percent to about 1 percent by weight in the ammonium phosphates. It is particularly advantageous that this salt is useful in both types of ammonium phosphates.