David T Truong

US Patent:

6670086, Dec 30, 2003

Filed:

May 21, 2002

Appl. No.:

10/153846

Inventors:

Richard J. Nadolsky - Houston TX
Thomas Joseph Clark - Sugar Land TX
David D. Truong - Stafford TX

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

G03G 908

US Classification:

4301062, 4301081, 4301088

Abstract:

Coupled alcohol ethoxylates made by reacting alcohol ethoxylates with a diisocyanate have been found to improve the thermal properties of toner compositions and powder coatings. The alcohol ethoxylates have saturated linear alcohol portions of from about 20-70 carbon atom chain lengths. The diisocyanates may be aromatic diisocyanates such as toluene diisocyanate (TDI) and/or methylenediphenyl diisocyanate (MDI). Preferably, about one mole of diisocyanate is reacted with about two moles of the alcohol ethoxylates to form the coupled alcohol ethoxylates that are useful compatibilizers to improve the homogeneity of toner compositions and powder coating compositions.

US Patent:

7183359, Feb 27, 2007

Filed:

Oct 12, 2005

Appl. No.:

11/249070

Inventors:

Paul K. Hanna - Sugar Land TX, US
David D. Truong - Stafford TX, US

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

C08F 269/00
C08L 23/12

US Classification:

525285, 525286, 525240

Abstract:

Polypropylene having high maleic anhydride content, between about 5 and about 45 wt %, may be prepared by first reacting a metallocene-prepared polypropylene having terminal unsaturation with one mole equivalent of maleic anhydride to give polypropylene having a single unsaturation and a terminal succinic anhydride moiety. This product is then reacted with additional maleic anhydride in the presence of a free radical initiator (such as a peroxide or UV radiation) to give a polypropylene with maleic anhydride moieties along the backbone. The polypropylene product does not suffer scission or crosslinking with subsequently undesirable increases in molecular weight or viscosity. The maleic anhydride moieties provide reactivity to the polypropylene and thus expand its uses and applications.

US Patent:

7314904, Jan 1, 2008

Filed:

May 25, 2004

Appl. No.:

10/852866

Inventors:

Richard J. Nadolsky - Houston TX, US
David D. Truong - Stafford TX, US

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

C08F 216/02

US Classification:

5263075, 5263483, 526227, 5262196, 5263171

Abstract:

Disclosed is a composition of a functionalized polyalphaolefin comprising the reaction product of admixing (a) an alpha-olefin monomer having at least 10 carbon atoms; (b) an unsaturated functionalizing compound; and (c) a polymerization initializer, under reaction conditions sufficient to polymerize the alpha-olefin monomer and unsaturated functionalizing compound. Free radical initiators, especially peroxides are disclosed to be useful in preparing the functionalized polyalphaolefin. The functionalized polyalphaolefins are disclosed to be useful in preparing inks, toners, coatings, candle waxes, lubricating oils, and personal care products.

US Patent:

7589150, Sep 15, 2009

Filed:

Dec 12, 2001

Appl. No.:

10/433164

Inventors:

Paul Hanna - Sugar Land TX, US
Leon L. Otte - Spring TX, US
Kent Fudge - Sugar Land TX, US
Thomas J. Clark - Sugar Land TX, US
David D. Truong - Stafford TX, US
John Woods - Missouri City TX, US

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

C08L 51/06
C08G 63/91
C08F 10/06

US Classification:

525 64, 525 70, 525 80, 525 86, 525539, 525437, 525416, 5253337

Abstract:

Disclosed are polypropylene homopolymers, copolymers and mono and polyfunctional polypropylene derivatives as well as methods of preparing them. These polymers are prepared in the eresence of a metallocene catalyst and are isotactic. Applications using these polymers include but are not limited to, electrophotography toners, melt facture reduction agents, and compatibilizers.

US Patent:

20040086795, May 6, 2004

Filed:

Oct 24, 2003

Appl. No.:

10/693341

Inventors:

Richard Nadolsky - Houston TX, US
Thomas Clark - Sugar Land TX, US
David Truong - Stafford TX, US

International Classification:

G03G015/00

US Classification:

430/056000

Abstract:

Coupled alcohol ethoxylates made by reacting alcohol ethoxylates with a diisocyanate have been found to improve the thermal properties of toner compositions and powder coatings. The alcohol ethoxylates have saturated linear alcohol portions of from about 20-70 carbon atom chain lengths. The diisocyanates may be aromatic diisocyanates such as toluene diisocyanate (TDI) and/or methylenediphenyl diisocyanate (MDI). Preferably, about one mole of diisocyanate is reacted with about two moles of the alcohol ethoxylates to form the coupled alcohol ethoxylates that are useful compatibilizers to improve the homogeneity of toner compositions and powder coating compositions.

US Patent:

20050130054, Jun 16, 2005

Filed:

Nov 18, 2004

Appl. No.:

10/992323

Inventors:

Xiaoying Yuan - Houston TX, US
Paul Hanna - Sugar Land TX, US
John Shelley - Sapulpa OK, US
William Cottom - Mounds OK, US
David Truong - Stafford TX, US
Tom Clark - Myakka City FL, US

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

G03G009/08

US Classification:

430108800

Abstract:

Disclosed are wax based inks for phase change/hot melt inkjet printing or thermal transfer printing applications. Also disclosed are waxes useful for toners for use in electrostatographic printing applications. Both materials are prepared using a wax having a narrow melting range. The narrow melting range of the wax reduces energy requirements in printing applications. The use of the waxes also promotes release for high speed printing and especially promotes fast drying in wax based ink applications.

Address:

11623 Evesborough Dr, Houston, TX 77099

VIN:

1NXBR32E37Z883034

Make:

TOYOTA

Model:

COROLLA

Year:

2007