Paul William Hanna

Author:

Paul R. Hanna

ISBN #:

0262081091

Author:

Paul R. Hanna

ISBN #:

0809314150

Author:

Paul R. Hanna

ISBN #:

0809314169

Author:

Paul R. Hanna

ISBN #:

0817985018

Author:

Paul R. Hanna

ISBN #:

0817985026

Author:

Paul Robert Hanna

ISBN #:

0395045657

Author:

Paul Robert Hanna

ISBN #:

0819124605

Author:

Paul Hanna

ISBN #:

0140260692

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:

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:

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.

US Patent:

20050203255, Sep 15, 2005

Filed:

Jan 14, 2005

Appl. No.:

11/035480

Inventors:

Paul Hanna - Sugar Land TX, US
Kent Fudge - Sugar Land TX, US

Assignee:

Baker Hughes Incorporated - Houston TX

International Classification:

C08F010/00

US Classification:

525333700, 526351000, 430109100, 430106100, 430107100

Abstract:

Disclosed are polypropylene derivatives and methods of preparing them. These derivatives can be used as, for example, compatibilizers. The degree of isotactic, syndiotactic or atactic structure of the compatibilizers can be modified based upon the character of the materials to be compatibilized to improve the effectiveness of the compatibilizer.