Martin Vogel

US Patent:

56632240, Sep 2, 1997

Filed:

Dec 3, 1991

Appl. No.:

7/801989

Inventors:

William David Emmons - Huntingdon Valley PA
Martin Vogel - Jenkintown PA
Edward C. Kostansek - Buckingham PA
Jack C. Thibeault - Doylestown PA
Peter R. Sperry - Doylestown PA
Chao-Jen Chung - North Wales PA

Assignee:

Rohm and Haas Company - Philadelphia PA

International Classification:

C08K 554

US Classification:

524188

Abstract:

Inorganic material particles are dispersed in an aqueous medium with surface charge adjusting additives to give a moderately stable slurry or pigment grind. The dispersion can be used to prepare fully formulated compositions. Products formulated using the aqueous dispersion can be prepared to give the same performance as products including inorganic material dispersed with conventional polyelectrolyte pigment dispersants, but with higher levels of inorganic material, or superior performance properties with like levels of inorganic material.

US Patent:

58351744, Nov 10, 1998

Filed:

Sep 19, 1996

Appl. No.:

8/704316

Inventors:

Richard Roy Clikeman - Washington Crossing PA
Morris Christopher Wills - Roebling NJ
Peter Reeves Sperry - Doylestown PA
Martin Vogel - Jenkintown PA
Willie Lau - Ambler PA

Assignee:

Rohm and Haas Company - Philadelphia PA

International Classification:

G02F 11333

US Classification:

349 86

Abstract:

Disclosed are uniformly sized domains of liquid crystals, a method for forming the domains, and their performance in polymer dispersed liquid crystal displays. The method provides the ability to form discrete domains of liquid crystal surrounded by a polymer shell, also known as polymer encased liquid crystals, or PELCs. Further, the method provides for the ability to make PELCs that have uniformly sized particles. Displays made comprising uniformly sized PELCs demonstrate markedly improved electro-optical performance over displays made by conventional polymer dispersed liquid crystal processes.

US Patent:

54475600, Sep 5, 1995

Filed:

Mar 3, 1994

Appl. No.:

8/206303

Inventors:

Martin Vogel - Jenkintown PA

Assignee:

Rohn and Haas Company - Philadelphia PA

International Classification:

C09D 1300
C08F26500

US Classification:

106 20A

Abstract:

A method is disclosed for improving the erasability of erasable marking compositions, while maintaining the opacity of the coating and without producing burnishing, by incorporating into the compositions voided latex particles having a shell polymerized from either: (1) at least about 25% by weight, based on the weight of the shell, of a crosslinking comonomer; (2) at least about 5% by weight, based on the weight of the shell, of a crosslinking comonomer, when at least about 50% by weight of methyl methacrylate is used as a comonomer in the shell. An improved liquid marking composition is also disclosed.

US Patent:

59764058, Nov 2, 1999

Filed:

Dec 23, 1997

Appl. No.:

8/996852

Inventors:

Richard Roy Clikeman - Washington Crossing PA
Morris Christopher Wills - Roebling NJ
Peter Reeves Sperry - Doylestown PA
Martin Vogel - Jenkintown PA
Willie Lau - Ambler PA

Assignee:

Rohm and Haas Company - Philadelphia PA

International Classification:

C09K 1952
G02F 11333
B01J 1302

US Classification:

25229901

Abstract:

Disclosed are uniformly sized domains of liquid crystals, a method for forming the domains, and their performance in polymer dispersed liquid crystal displays. The method provides the ability to form discrete domains of liquid crystal surrounded by a polymer shell, also known as polymer encased liquid crystals, or PELCs. Further, the method provides for the ability to make PELCs that have uniformly sized particles. Displays made comprising uniformly sized PELCs demonstrate markedly improved electro-optical performance over displays made by conventional polymer dispersed liquid crystal processes.

US Patent:

62718983, Aug 7, 2001

Filed:

Dec 23, 1997

Appl. No.:

8/997668

Inventors:

Richard Roy Clikeman - Washington Crossing PA
Morris Christopher Wills - Roebling NJ
Peter Reeves Sperry - Doylestown PA
Martin Vogel - Jenkintown PA
Willie Lau - Ambler PA

Assignee:

Rohm and Haas Company - Philadelphia PA

International Classification:

G02F 11333

US Classification:

349 86

Abstract:

Disclosed are uniformly sized domains of liquid crystals, a method for forming the domains, and their performance in polymer dispersed liquid crystal displays. The method provides the ability to form discrete domains of liquid crystal surrounded by a polymer shell, also known as polymer encased liquid crystals, or PELCs. Further, the method provides for the ability to make PELCs that have uniformly sized particles. Displays made comprising uniformly sized PELCs demonstrate markedly improved electro-optical performance over displays made by conventional polymer dispersed liquid crystal processes.

US Patent:

60370580, Mar 14, 2000

Filed:

May 26, 1999

Appl. No.:

9/318898

Inventors:

Richard Roy Clikeman - Washington Crossing PA
Morris Christopher Wills - Roebling PA
Peter Reeves Sperry - Doylestown PA
Martin Vogel - Jenkintown PA
Willie Lau - Ambler PA

Assignee:

Rohms and Haas Company - Philadelphia PA

International Classification:

B32B 316
B32B 516
B32B 1502

US Classification:

4284022

Abstract:

Disclosed are uniformly sized domains of liquid crystals, a method for forming the domains, and their performance in polymer dispersed liquid crystal displays. The method provides the ability to form discrete domains of liquid crystal surrounded by a polymer shell, also known as polymer encased liquid crystals, or PELCs. Further, the method provides for the ability to make PELCs that have uniformly sized particles. Displays made comprising uniformly sized PELCs demonstrate markedly improved electro-optical performance over displays made by conventional polymer dispersed liquid crystal processes.

US Patent:

54945089, Feb 27, 1996

Filed:

May 24, 1995

Appl. No.:

8/449862

Inventors:

Martin Vogel - Jenkintown PA

Assignee:

Rohm and Haas Company - Philadelphia PA

International Classification:

C09D 1100
C09D 1300
C08F26500

US Classification:

106 32

Abstract:

A method is disclosed for improving the erasability of erasable marking compositions, while maintaining the opacity of the coating and without producing burnishing, by incorporating into the compositions voided latex particles having a shell polymerized from either: (1) at least about 25% by weight, based on the weight of the shell, of a crosslinking comonomer; (2) at least about 5% by weight, based on the weight of the shell, of a crosslinking comonomer, when at least about 50% by weight of methyl methacrylate is used as a comonomer in the shell. An improved liquid marking composition is also disclosed.

US Patent:

56632134, Sep 2, 1997

Filed:

Aug 24, 1995

Appl. No.:

8/518698

Inventors:

Charles Elwood Jones - Yardley PA
Rafael Gonzalez Aviles - Harleysville PA
David Michael Fasano - Maple Glen PA
Martin Vogel - Jenkintown PA

Assignee:

Rohm and Haas Company - Philadelphia PA

International Classification:

A61K 742
A61K 749

US Classification:

523105

Abstract:

A method is disclosed for improving the UV radiation absorption of a composition containing a UV radiation absorbing agent by adding from about 0. 1 weight percent to about 50 weight percent of latex particles, based on total weight nonvolatiles. The latex particles contain a void and have a particle size of from about 100 nm to about 380 nm.