Robert I Moffett

US Patent:

6699363, Mar 2, 2004

Filed:

Nov 13, 2001

Appl. No.:

10/066969

Inventors:

Robert Harvey Moffett - Landenberg PA

Assignee:

E. I. du Pont de Nemours and Company - Wilmington DE

International Classification:

D21H 2110

US Classification:

1621683, 162175, 1621811, 1621812, 162183, 524 27, 524 47, 536101, 5361231

Abstract:

A process that can be used for producing a starch product is provided. The process comprises heating a composition, which comprises or consists essentially of a starch, a polyacrylamide, and a multivalent cation. The weight ratio of starch to polyacrylamide is greater than about 2 to 1. The process can also comprise heating a composition, which comprises or consists essentially of a starch and a polyacrylamide to produce a heated composition followed by contacting the heated composition with a multivalent cation. The heating can be carried out at a pH above 7. 0 if the polyacrylamide is a cationic polyacrylamide or nonionic polyacrylamide and, if the starch is a cationic starch and the polyacrylamide is an amphoteric polyacrylamide or anionic polyacrylamide, the heating neutralizes less than 75% of the cationic starch.

US Patent:

6780330, Aug 24, 2004

Filed:

Mar 9, 2001

Appl. No.:

09/802712

Inventors:

Robert Harvey Moffett - Landenberg PA

Assignee:

E. I. du Pont de Nemours and Company - Wilmington DE

International Classification:

C02F 156

US Classification:

210725, 210666, 210727, 210905, 210734

Abstract:

A process is provided which can be used to treat aqueous streams comprising soluble biomaterials, especially proteins, wherein the concentration of soluble biomaterials is substantially reduced. The process comprises adjusting the pH of a substantially aqueous to less than or equal to pH 3 to produce a first pH-adjusted stream, which is in turn adjusted to greater than pH 3 to produce a second pH-adjusted stream followed by addition of a flocculant to produce a flocculated material.

US Patent:

7048859, May 23, 2006

Filed:

Dec 11, 2001

Appl. No.:

10/013406

Inventors:

Robert Harvey Moffett - Landenberg PA, US

Assignee:

E. I. du Pont de Nemours and Company - Wilmington DE

International Classification:

C02F 1/56

US Classification:

210714, 210666, 210725, 210727, 210730, 210734, 210735, 210906

Abstract:

A process is provided which can be used to clarify substantially aqueous streams and optionally separate biosolids, especially proteins, from food processing operations which comprises contacting an aqueous stream comprising biosolids with an anionic inorganic colloid and an organic polymer to flocculate the biosolids.

US Patent:

8092736, Jan 10, 2012

Filed:

Nov 24, 2008

Appl. No.:

12/276448

Inventors:

Robert Harvey Moffett - Landenberg PA, US

Assignee:

E. I. du Pont de Nemours and Company - Wilmington DE

International Classification:

B29C 39/22

US Classification:

264300, 526206, 526247, 526253, 526255, 526250

Abstract:

A composition and its use as a mold release composition are disclosed. The composition comprises a fluorotelomer, which comprises repeat units derived from a fluoroalkene, and optionally a comonomer, and has an endgroup derived from an alcohol, an alcohol derivative, or a combination thereof, and said fluorotelomer has or comprises a structure depicted as H(CX)BDor a mixture of structures depicted as H(CX)Band H(CX)D, wherein each X is independently H or F, provided at least one X is F, p is a number from about 16 to about 1500, B represents a unit derived from a hydrofluorocarbon, q is a number from 0. 02 to 0. 4, D represents an endgroup derived from said alcohol, alcohol derivative, or combination thereof, and r is a number 0. 2 to 1. The composition comprises a silane having the formula R—Si—(Z)wherein Z is OR, Cl, or H, wherein Ris selected from the group consisting of hydrogen, a hydrocarbon radical having 1-34 carbon atoms, and combinations of two or more thereof, Ris selected from the group consisting hydrogen, a hydrocarbon radical having 1-4 carbon atoms, and combinations of two or more thereof, provided that Rand Rboth cannot be hydrogen, and n is a number from 1 to 3. The composition may further comprise a solvent and/or a catalyst.

US Patent:

8343337, Jan 1, 2013

Filed:

Oct 29, 2009

Appl. No.:

12/608048

Inventors:

Robert Harvey Moffett - Landenberg PA, US
Peter Andrin - Napanee, CA

Assignee:

E.I. du Pont de Nemours and Company - Wilmington DE

International Classification:

C10G 1/04

US Classification:

208390, 208391, 208424

Abstract:

A process for the extraction and recovery of bitumen from oil sands and a process for the treatment of tailings are disclosed. Bitumen is recovered in a process comprising contacting a polysilicate microgel with an ore sand oil to produce a froth comprising bitumen and a tailings stream comprising water, sand and clay fines. Preferably the tailings stream is dewatered and recovered water may be recycled to the extraction process. Polysilicate microgel may be carried through to a dewatering step and enhances flocculation in dewatering said tailings.

US Patent:

8388832, Mar 5, 2013

Filed:

Oct 29, 2009

Appl. No.:

12/608142

Inventors:

Robert Harvey Moffett - Landenberg PA, US
Peter Andrin - Napanee, CA

Assignee:

E. I. du Pont de Nemours and Company - Wilmington DE

International Classification:

C10G 1/04
B01D 21/01

US Classification:

208390, 208391, 210723, 210726

Abstract:

A process for the treatment of a tailings stream is provided. The tailings stream comprises water, sand and clay fines and is produced from bitumen extraction process of an oil sands ore. The process for treating the tailings stream comprises contacting a polysilicate microgel, a polyacrylamide and one or both of a multivalent metal compound and a low molecular weight cationic organic polymer with a tailings stream to flocculate sand and clay fines.

US Patent:

8409647, Apr 2, 2013

Filed:

Aug 12, 2008

Appl. No.:

12/189892

Inventors:

Robert Harvey Moffett - Landenberg PA, US
Jeffrey Allen Odle - Middletown DE, US
Rafael Januario Calabrese - Sao Paulo, BR

Assignee:

E. I. du Pont de Nemours and Company - Wilmington DE

International Classification:

A23L 1/059

US Classification:

426423, 426 49, 426422, 426490, 426592, 1061621, 435 41

Abstract:

The present invention provides a method of reducing chill haze in a protein containing liquid (especially beverages resulting from fermentation such as beer and wine) by contacting the liquid with silica microgels having an average microgel diameter of at least 18 nm, more preferably at least 45 nm, and most preferably at least 70 nm. It has now been discovered that microgels having an average microgel diameter of less than about 18 nm do not adequately reduce chill haze of a protein containing liquid. In particular, while microgels having an average microgel diameter of less than about 18 nm cause the coagulation of haze-forming components, these components remain suspended in liquid and continue to cause haze despite allowing the liquid to settle for long periods of time. Conversely, it has now been discovered that microgels having an average microgel diameter of at least about 18 nm cause the coagulation and precipitation of haze-forming components and the rapid settling thereof without the use of an organic polymer which acts as a flocculating agent.

US Patent:

20030089668, May 15, 2003

Filed:

Jul 3, 2001

Appl. No.:

09/898437

Inventors:

Robert Moffett - Landenberg PA, US

International Classification:

C02F001/52

US Classification:

210/725000

Abstract:

A process is provided to reduce phosphorus concentrations in aqueous streams comprising phosphorus. The process comprises (a) adjusting pH, (b) adding a particular metal ion, and (c) adding organic polymers. Optionally anionic inorganic colloids can be added.