Douglas G Hanson

US Patent:

7041234, May 9, 2006

Filed:

Jan 23, 2002

Appl. No.:

10/057548

Inventors:

Stephen T. Wellinghoff - San Antonio TX, US
Douglas P. Hanson - San Antonio TX, US

Assignee:

Southwest Research Institute - San Antonio TX

International Classification:

C09K 19/20

US Classification:

25229967, 25229964, 585 25, 585935

Abstract:

A method for producing platform molecules comprising: forming a mixture comprising first and second phenylene rings comprising halogenated carboxylic groups, and a third phenylene ring comprising a desired substituent and a first functionality at a para-position to a second funcitonality; and exposing the mixture to conditions effective to react the first halogenated carboxylic group with the first functionality to produce a first ester bond, and the second halogenated carboxylic group with the second functionality to produce a second ester bond; producing platform molecules comprising terminal groups comprising the first functional group at a position para to first ester bond and the second functional group at a position para to the second ester bond.

US Patent:

7094360, Aug 22, 2006

Filed:

Dec 13, 2004

Appl. No.:

11/010680

Inventors:

Stephen T. Wellinghoff - San Antonio TX, US
Douglas P. Hanson - San Antonio TX, US

Assignee:

Southwest Research Institute - San Antonio TX

International Classification:

C09K 19/52
C09K 19/20
C08L 31/06

US Classification:

25229901, 25229964, 25229965, 2522995, 524533, 524559

Abstract:

A resin blend and method of producing the resin blend, the resin blend comprising one or more first liquid crystal monomer at a ratio to one or more secondary monomer, said secondary monomer and said ratio being adapted to maintain said resin blend in a nematic liquid crystalline state after addition of an inorganic filler at a temperature of 20 C. for about 30 minutes or more, the resin blend having a polymerization shrinkage of 3 vol. % or less.

US Patent:

7098359, Aug 29, 2006

Filed:

Jul 5, 2002

Appl. No.:

10/190470

Inventors:

Stephen T. Wellinghoff - San Antonio TX, US
Douglas P. Hanson - San Antonio TX, US

Assignee:

Southwest Research Institute - San Antonio TX

International Classification:

C07C 69/76
C09K 19/20
C09K 19/38
C08L 67/06
C08K 5/12

US Classification:

560 76, 25229901, 25229964, 25229967, 524294, 524534, 524559

Abstract:

New, efficient methods for making novel platform molecules and polymerizable mesogens are provided, as well as the novel mesogens and methods of using same.

US Patent:

7108801, Sep 19, 2006

Filed:

Jan 23, 2002

Appl. No.:

10/057506

Inventors:

Stephen T. Wellinghoff - San Antonio TX, US
Douglas P. Hanson - San Antonio TX, US

Assignee:

Southwest Reasearch Institute - San Antonio TX

International Classification:

C09K 19/52
C09K 19/20
C09K 19/38
C08L 31/06

US Classification:

25229901, 25229967, 524533, 524559

Abstract:

A method for producing a blend comprising randomly substituted mesogens comprising: providing one or more platform molecules have the following general structure:.

US Patent:

7147800, Dec 12, 2006

Filed:

Dec 24, 2003

Appl. No.:

10/746109

Inventors:

Stephen T. Wellinghoff - San Antonio TX, US
Douglas P. Hanson - San Antonio TX, US

Assignee:

Southwest Research Institute - San Antonio TX

International Classification:

C09K 19/20
C09K 19/52
C08G 63/12
C07C 69/76
C07C 15/12

US Classification:

25229967, 25229901, 528176, 528192, 560 86, 585 25, 585932, 585935

Abstract:

A method for making platform molecules comprising: reacting 4-alkoxy benzoyl chloride with R-hydroquinone under first conditions effective to produce bis 1,4[4-alkoxy-benzoyloxy]-R-phenylene comprising bis terminal alkoxy groups wherein Ris a bulky organic group; and, subjecting the bis 1,4[4-alkoxy-benzoyloxy]-R-phenylene to second conditions effective to selectively cleave the bis terminal alkoxy groups to produce a solution comprising complexes comprising diphenolic platform molecules comprising bis terminal hydroxyl groups, the second conditions also being effective to precipitate the complexes out of the solution.

US Patent:

7238831, Jul 3, 2007

Filed:

Jan 23, 2002

Appl. No.:

10/056121

Inventors:

Stephen T. Wellinghoff - San Antonio TX, US
Douglas P. Hanson - San Antonio TX, US

Assignee:

Southwest Research Institute - San Antonio TX

International Classification:

C07C 69/76
C09K 19/00
C08G 63/00

US Classification:

560 86, 560 66, 560 19, 428 11, 528308

Abstract:

Novel platform mesogens, intermediates, and polymerizable mesogens made therefrom.

US Patent:

20040199004, Oct 7, 2004

Filed:

Mar 26, 2004

Appl. No.:

10/811090

Inventors:

Stephen Wellinghoff - San Antonio TX, US
Douglas Hanson - San Antonio TX, US

Assignee:

Southwest Research Institute - San Antonio TX

International Classification:

C07C069/76

US Classification:

560/019000, 560/066000

Abstract:

Mesogens having the following general formula: wherein X and Y independently are selected from the group consisting of amino groups, polymerizable groups, and groups having the following general structure:  wherein Z is selected from the group consisting of terminal functionalities and polymerizable groups; provided that when X is a polymerizable group, Y is an amino group; Ris a bulky organic group having a bulk greater than Rand Rwhereby, when both X and Y are polymerizable groups, said bulk is adapted to provide sufficient steric hindrance to achieve a nematic state at room temperature while suppressing crystallinity at room temperature, thereby providing effective rheology and workability at room temperature; and Rand Rare selected from groups less bulky than Radapted to maintain said nematic state.

US Patent:

20080131395, Jun 5, 2008

Filed:

Nov 27, 2007

Appl. No.:

11/945583

Inventors:

Stephen T. Wellinghoff - San Antonio TX, US
Joel J. Kampa - Lakehills TX, US
Douglas P. Hanson - San Antonio TX, US
Michael John Finnegan - Columbia SC, US

Assignee:

MICROACTIVE CORP. - Reno NV
SOUTHWEST RESEARCH INSTITUTE - San Antonio TX

International Classification:

A61L 9/01
C08L 55/00
A01N 31/00
A01P 3/00
A01P 1/00

US Classification:

424 763, 525 55, 525540, 424 7808

Abstract:

The invention relates generally to compatible polymer blends that can be extruded or injection molded into films or other objects that will generate and release a gas such as sulfur dioxide, carbon dioxide, or chlorine dioxide upon contact with moisture.