Gerald C Brown

US Patent:

8058463, Nov 15, 2011

Filed:

Nov 26, 2008

Appl. No.:

12/323593

Inventors:

Axel Hans-Joachim Herzog - West Chester PA, US
Gerald Oronde Brown - Wilmington DE, US

Assignee:

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

International Classification:

C07F 7/10
C07D 231/00

US Classification:

556413, 548110

Abstract:

Fluoroalkyl silanes are a class of compounds useful for various industrial purposes. For example, fluoroalkyl silanes which have hydrolysable groups (called hydrolysable fluoroalkyl silanes), are compounds useful as surface treatment agents which provide durable hydrophobic and oleophobic coatings. In general, hydrolysable fluoroalkyl silanes can be represented with the following formula: (RO—)Si—Rwherein R is H or an alkyl; and Ris a monovalent organic compound terminated by a perfluoroalkyl group. When used to coat a surface, the (RO—)moiety reacts (via hydrolysis) with various chemical groups of the surface (e. g. , hydroxyl, amine, or other reactive groups) thereby bonding the fluoroalkyl silane to the surface The Rmoiety comprises a divalent organic linking group which links the silicon atom to a terminal group rich in fluorine atoms whose unique electronic properties impart desirable hydrophobic and oleophobic properties in a surface coating. Modification of the Rmoiety is useful in the engineering of fluoroalkyl silanes. The present invention provides for fluoroalkyl silanes having Rmoieties which have not been heretofore considered.

US Patent:

8153834, Apr 10, 2012

Filed:

Dec 4, 2008

Appl. No.:

12/328122

Inventors:

Gerald Oronde Brown - Wilmington DE, US
Axel Hans-Joachim Herzog - West Chester PA, US

Assignee:

E.I. duPont de Nemours and Company - Wilmington DE

International Classification:

C07F 7/04
C07D 231/00

US Classification:

556413, 548110

Abstract:

The present invention relates to particles, i. e. , oxides of Si, Ti, Zn, Zr, Mn, Al and combinations thereof, where at least one particle has a surface covalently bonded to at least one fluorosilane group. The particle is first bonded to a divalent organic linking group which in turn is bonded to a perfluoroalkyl group. It has been discovered that incorporation of the aforementioned divalent organic linking group can improve the ability of the resulting hydrophobized inorganic particles to impart hydrophobic and oleophobic properties.

US Patent:

8314037, Nov 20, 2012

Filed:

Nov 11, 2008

Appl. No.:

12/268470

Inventors:

Gerald Oronde Brown - Wilmington DE, US
Peter Michael Murphy - Chadds Ford PA, US
Ying Wang - West Chester PA, US

Assignee:

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

International Classification:

B32B 5/02
B32B 27/00
C08F 18/20
A01K 1/015

US Classification:

442 80, 428221, 428421, 526245, 526246

Abstract:

A fluoropolymer composition comprising monomers copolymerized in the following percentages by weight:.

US Patent:

8324314, Dec 4, 2012

Filed:

Oct 12, 2009

Appl. No.:

12/577334

Inventors:

Gerald Oronde Brown - Wilmington DE, US
Michael Henry Ober - Wilmington DE, US

Assignee:

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

International Classification:

A63B 37/00
B01F 17/00
B05D 3/02
B32B 5/08
B32B 5/12
B32B 5/26
B32B 25/02
B32B 25/10
B32B 27/00
B32B 27/04
B32B 27/12
B32B 27/40
C08G 18/08
C08G 18/28
C08J 3/00
C08K 3/10
C08K 3/18
C08K 3/20
C08K 3/22
C08L 75/00
D03D 15/00
D03D 25/00

US Classification:

524590, 4273722, 4273855, 4284231, 442 58, 442 79, 442 80, 442 81, 442 83, 442 85, 442 86, 442 89, 442 92, 442 93, 442 94, 442106, 442115, 442124, 442131, 442181, 442218, 442275, 442280, 442281

Abstract:

A composition for imparting surface properties to substrates comprising a polymer of at least one polyurethane having at least one urea linkage prepared by:.

US Patent:

8329822, Dec 11, 2012

Filed:

Nov 9, 2009

Appl. No.:

12/614488

Inventors:

Gerald Oronde Brown - Wilmington DE, US
Victoria A. Helinski - New Castle DE, US

Assignee:

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

International Classification:

C08F 214/18

US Classification:

525200, 42721331, 42721334, 42721336, 427215, 427221, 427222, 252 861, 252 862, 252 881, 252 891, 524430, 525199, 525222, 525227, 525228, 525268, 525269, 525270, 525276, 526 79, 526 80, 526 87, 526 90, 526 91, 526194, 526242, 526246, 526245, 526319, 526328, 5263295, 5263296

Abstract:

A polymer composition comprising.

US Patent:

8420826, Apr 16, 2013

Filed:

Sep 23, 2011

Appl. No.:

13/242365

Inventors:

Axel Hans-Joachim Herzog - West Chester PA, US
Gerald Oronde Brown - Wilmington DE, US

Assignee:

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

International Classification:

C07D 231/00
C07F 7/04

US Classification:

548110, 556421, 556420

Abstract:

The present invention is directed to a fluorosilane represented by (L)-Si—(CH)—(Z)—[C(X)]—(Z)-Q-Rwhere each n is independently an integer from 1 to 12; L is independently chosen from a hydrolysable or non-hydrolysable monovalent group; Ris chosen from a C-Cperfluoroalkyl provided that: i) one fluorine atom of the perfluoroalkyl can be optionally replaced by hydrogen, and/or ii) the perfluoroalkyl can be optionally interrupted by at least one oxygen, methylene, or ethylene; Qis chosen from the group consisting of a C-Chydrocarbylene optionally interrupted by at least one divalent organic group; Xis chosen from O or S; —Zis —NH— and Zis from the group consisting of —O—, and —S—; each Ris independently chosen from hydrogen, phenyl, or a monovalent C-Calkyl optionally terminated by —CH, preferably H or CH.

US Patent:

8501952, Aug 6, 2013

Filed:

Sep 23, 2011

Appl. No.:

13/242434

Inventors:

Axel Hans-Joachim Herzog - West Chester PA, US
Gerald Oronde Brown - Wilmington DE, US

Assignee:

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

International Classification:

C07D 231/00

US Classification:

548110, 556421, 556420

Abstract:

The present invention is directed to a fluorosilane represented by (L)-Si—(CH)—N(-Q-R)-Q-Rwhere each n is independently an integer from 1 to 12; L is independently chosen from a hydrolysable or non-hydrolysable monovalent group Ris chosen from a C-Cperfluoroalkyl provided that: i) one fluorine atom of the perfluoroalkyl can be optionally replaced by hydrogen, and/or ii) the perfluoroalkyl can be optionally interrupted by at least one oxygen, methylene, or ethylene; Qis chosen from the group consisting of a C-Chydrocarbylene optionally interrupted by at least one divalent organic group; Xis chosen from O or S; and b) Qand Qare independently chosen from the group consisting of a C-Chydrocarbylene interrupted by at least one of —C(O)—O— or —O—C(O)—, and optionally further interrupted by at least one divalent organic group.

US Patent:

8507601, Aug 13, 2013

Filed:

Nov 9, 2009

Appl. No.:

12/614482

Inventors:

Gerald Oronde Brown - Wilmington DE, US
Victoria A. Helinski - New Castle DE, US

Assignee:

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

International Classification:

C08F 220/24
C08F 220/22
C08L 27/00
C08K 3/22

US Classification:

524520, 524430, 428421, 442 92

Abstract:

A method of providing oil repellency, water repellency, and dynamic water repellency to a substrate comprising contacting the substrate with a polymer composition comprising.