Dean L Webster

US Patent:

7776956, Aug 17, 2010

Filed:

Aug 3, 2007

Appl. No.:

11/882754

Inventors:

Dean C. Webster - Fargo ND, US
Peter A. Edwards - Cokato MN, US

Assignee:

NDSU Research Foundation - Fargo ND

International Classification:

C08G 18/09

US Classification:

524591

Abstract:

The invention relates to novel aqueous coating compositions containing epoxy urethane (glycidyl carbamate) functional resin. An aqueous coating composition comprises a polyfunctional oligomer having at least two epoxy urethane functional groups and a polyalkylene oxide chain, a surfactant and water. The aqueous coating compositions of the invention can be dispersed in water with added surfactants to form a dispersion containing no volatile organic solvent. The invention provides a method for making aqueous coating compositions containing epoxy urethane functional resin as well. Water-dispersible epoxy urethane compounds of the aqueous coating compositions are also provided.

US Patent:

7799434, Sep 21, 2010

Filed:

Jul 26, 2006

Appl. No.:

11/989496

Inventors:

Dean C. Webster - Fargo ND, US
Abdullah Ekin - Imperial PA, US

Assignee:

NDSU Research Foundation - Fargo ND

International Classification:

B32B 9/04
C08G 77/448

US Classification:

428447, 528 25, 528 26, 528 28, 528 38, 528 44, 528 76, 528 80, 528 85

Abstract:

Polysiloxanes terminated with one or more hydroxy functional carbamate groups are provided. The polymers may have the formula (I) wherein R, R, R, and Rare independently hydrogen, C-Calkyl, C-Cfluoro-substituted alkyl; cyclopentyl, cyclohexyl, benzyl, toluoyl, xylyl and/or phenyl; Rand Rare linking groups; Rand Rare independently hydrogen, C-Calkyl, cyclopentyl, cyclohexyl, benzyl, toluoyl, xylyl or phenyl; and Land Lare linking groups. Typically, x is such that the polymer has a molecular weight of about 1,000 to 100,000. Other polymeric materials produced by reacting with an isocyanate functional compound or a lactone and coating compositions containing such polymeric materials are also provided.

US Patent:

7989074, Aug 2, 2011

Filed:

Jun 6, 2007

Appl. No.:

11/810696

Inventors:

Dean C. Webster - Fargo ND, US
Robert J. Pieper - Fargo ND, US
Abdullah Ekin - Corapolis PA, US

Assignee:

NDSU Research Foundation - Fargo ND

International Classification:

C08L 83/08

US Classification:

428447, 4284231, 428450, 525100, 525102, 525123, 525165, 525185, 525190, 525446, 528 38, 528 44, 528 83, 528 85

Abstract:

A polymeric material may be prepared by reacting a mixture comprising an amino functional polyorganosiloxane, polyisocyanate, and polyol. The polyol may comprise a hydroxy-functional poly(meth)acrylate. The polymeric material may be used as a coating for a substrate and may inhibit fouling on a surface exposed to aquatic conditions.

US Patent:

8017795, Sep 13, 2011

Filed:

Apr 21, 2006

Appl. No.:

11/408801

Inventors:

Dean C. Webster - Fargo ND, US
Zhigang Chen - Fargo ND, US
Neena Ravindran - Fargo ND, US

Assignee:

NDSU Research Foundation - Fargo ND

International Classification:

C07D 303/00
A01N 43/20
A01N 43/24

US Classification:

549547, 514475

Abstract:

Disclosed are coating formulations that include a copolyester and a vinyl ether in which the copolyester is produced by copolymerizing a monomer composition that includes a fused aromatic diacid monomer, an unsaturated diacid monomer, and a polyol. Also disclosed are methods for producing a laser-ablatable film on a surface of a substrate. The method includes coating the substrate with a coating formulation that includes a copolyester and a vinyl ether and polymerizing the coating formulation. The copolyester includes a fused aromatic moiety covalently bonded therein. Novel radiation curable sensitizers that can be used in the preparation of radiation curable polymer films having improved laser ablation properties are also described.

US Patent:

8062729, Nov 22, 2011

Filed:

Jul 11, 2007

Appl. No.:

11/827446

Inventors:

Dean C. Webster - Fargo ND, US
Partha S. Majumdar - Fargo ND, US

Assignee:

NDSU Research Foundation - Fargo ND

International Classification:

D06N 7/04

US Classification:

428141, 4284231, 428447, 528 28, 528 33, 528 60, 528 66

Abstract:

A polymeric material may be prepared by reacting a composition that includes polyol, polyisocyanate, and polyorganosiloxane having functional groups capable of reacting with the polyisocyanate, wherein the polymeric material has a surface which includes raised microdomains.

US Patent:

8097741, Jan 17, 2012

Filed:

Mar 31, 2008

Appl. No.:

12/593716

Inventors:

Dean C. Webster - Fargo ND, US
Dipak Chattopadhyay - Fargo ND, US

Assignee:

NDSU Research Foundation - Fargo ND

International Classification:

C07F 7/10

US Classification:

556413, 549512, 549551, 549553, 549555, 556419, 556421, 428428, 428450

Abstract:

The invention relates to solvent-containing two-component polyurethane moisture cured hybrid sol-gel coating formulation comprising 1) an epoxy-functional binder with carbamate functionality and 2) a blended curing component comprising at least one sol gel precursor and an amine crosslinker.

US Patent:

8114567, Feb 14, 2012

Filed:

Apr 21, 2007

Appl. No.:

12/226555

Inventors:

Dean C. Webster - Fargo ND, US
Zhigang Chen - Fargo ND, US

Assignee:

NDSU Research Foundation - Fargo ND

International Classification:

G03F 7/00
G03F 7/004
C07D 303/00
A01N 43/20
A01N 43/24

US Classification:

4302701, 430913, 549547, 514475

Abstract:

Disclosed are photosensitizers that include a polyol moiety covalently bonded to a fused aromatic moiety. Also disclosed is a method for improving UV laser ablation performance of a coating, such as a cationic UV curable coating, by incorporating an oxalyl-containing additive into the cationic UV curable or other coating. Oxalyl-containing sensitizers having the formula Q-O—C(O)—C(O)—O—R, wherein Q represents a fused aromatic moiety and R1 is an alkyl or aryl group, are also disclosed, as are oxalyl-containing oxetane resins, oxalyl-containing polyester polyols, and cationic UV curable coating formulations that include oxalyl-containing additives.

US Patent:

8299200, Oct 30, 2012

Filed:

Jun 9, 2008

Appl. No.:

12/663334

Inventors:

Dean C. Webster - Fargo ND, US
Abdullah Ekin - Imperial PA, US
Stacy Sommer - Fargo ND, US

Assignee:

NDSU Research Foundation - Fargo ND

International Classification:

C08G 77/26

US Classification:

528 38, 528 28

Abstract:

A polymeric material, prepared by reacting a mixture comprising a polyorganosiloxane having one or more isocyanate-reactive functional groups, polyisocyanate, and polyol, is provided. The isocyanate-reactive functional groups, typically one or two, are attached to only a single end of the polyorganosiloxane chains. The polymeric material may be used to form coatings on a substrate and to inhibit fouling on surfaces exposed to aqueous conditions.