Julia S Tan

US Patent:

6472136, Oct 29, 2002

Filed:

Sep 5, 2001

Appl. No.:

09/946256

Inventors:

Julia S. Tan - Rochester NY
Kurt M. Schroeder - Spencerport NY
Delaina A. Amos - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03C 108

US Classification:

430544, 430546, 430631, 430634, 430931, 430935, 430551, 430527, 430531, 430543, 430529, 430536, 430449

Abstract:

A method for forming a dispersion of an oil-soluble photographically useful compound in water or a hydrophilic colloid composition is disclosed, comprising dispersing the compound in the presence of a water-soluble anionic group containing polymeric surfactant, wherein the polymeric surfactant comprises a copolymer obtained from the copolymerization of a maleic anhydride monomer and a copolymerizable ethylenically unsaturated hydrophobic monomer and the anionic groups of the polymeric surfactant comprise primarily carboxy groups obtained upon base hydrolysis of the anhydride groups of the copolymer. The use of hydrolyzed maleic anhydride derived copolymers in place of conventional small-molecule surfactants as a dispersing agent to stabilize photographically active water-insoluble dye couplers or other organic oil-soluble photographically useful compounds enables a dramatic reduction of crystallization of such organic molecules on long-term keeping. In comparison to primarily sulfonic acid group containing polymeric surfactants, the stabilizing effect of the primarily carboxy group containing hydrolyzed maleic anhydride based polymeric surfactants generally exhibit less molecular weight dependence.

US Patent:

6514681, Feb 4, 2003

Filed:

May 24, 2001

Appl. No.:

09/864546

Inventors:

Seshadri Jagannathan - Pittsford NY
Julia S. Tan - Rochester NY
Roger L. Klaus - Rochester NY
Philip J. Zola - Webster NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03C 1005

US Classification:

430567, 430569, 430539, 430642, 430449

Abstract:

A radiation-sensitive emulsion comprised of an aqueous dispersing medium and a coprecipitated grain population including tabular grains containing greater than 50 mole percent bromide, based on silver, having {111} major faces, and accounting for greater than 90 percent of total grain projected area, wherein said dispersing medium is comprised of (a) a gelatin which has been modified to convert at least one carboxylic acid group thereof to a group that does not exhibit pH-dependent ionization within the pH range from 4. 0 to 7. 0, and (b) a polyalkylene oxide block copolymer surfactant.

US Patent:

50789945, Jan 7, 1992

Filed:

Apr 12, 1990

Appl. No.:

7/508767

Inventors:

Mridula Nair - Penfield NY
Julia S. Tan - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

A61K 3174

US Classification:

424501

Abstract:

A copolymer microparticle is presented which is derived from at least about 5 weight percent of free carboxylic acid group-containing vinyl monomers, monomers which have a poly(alkylene oxide) appended thereto, oleophilic monomers and other nonionic hydrophilic monomers. Microgels containing these copolymers having a median water swollen diameter of about 0. 01 to about 1. 0 micrometer are disclosed. Pharmaceutical and diagnostic compositions are disclosed comprising a therapeutic or diagnostic agent and microgels comprising a copolymer derived from at least about 5 weight percent of non-esterified carboxylic acid group-containing vinyl monomers, oleophilic monomers and other nonionic hydrophilic monomers, with the proviso that when the median water swollen diameter of the microgels is 0. 1 micrometer or greater, at least 5 weight percent of the monomers have a poly(alkylene oxide) appended thereto. Diagnostic and therapeutic methods are also disclosed wherein the microgels are substantially protein non-adsorbent and substantially refractory to phagocytosis.

US Patent:

57309680, Mar 24, 1998

Filed:

Mar 31, 1994

Appl. No.:

8/221714

Inventors:

Dennis E. Butterfield - Rochester NY
Dennis K. Fujii - Downingtown PA
David L. Ladd - Wayne PA
Robert A. Snow - Chester PA
Julia S. Tan - Rochester NY
John L. Toner - Downingtown PA

Assignee:

Sterling Winthrop Inc. - New York NY

International Classification:

A61K 3177
A61K 4900
A61K 5100
C08G 6548

US Classification:

424 7837

Abstract:

A composition suitable for use in diagnostic imaging or as a cell killing agent comprising a chelating residue linked via an amide linkage to a poly(alkylene oxide) moiety, said composition having a molecular weight of at least 4,500; ##STR1## wherein: Z is a chelating residue; Q is a divalent poly(alkylene oxidylene) moiety having a carbon terminus at R and at L; L represents an amide linkage; E. sup. (b) is one or more counterions each having a charge of b; b is an integer from 1, 2 and 3; n is an integer selected from the group 1, 2, 3 and 4; w is zero or an integer from 1 to 5; M. sup. (+a) is a cation, having a charge of +a; a is an integer from 1 to 4; r is 0 or an integer from 1 to 3, provided that when r is 2-3, each M. sup. (+a) can be the same or different cation; d is the total charge on the chelating residue and is an integer from 0 to 10; d+. SIGMA. (b. multidot. w)+. SIGMA. (a. multidot. r)=O; and R is a capping moiety chosen from the group consisting of hydrogen, hydroxyl, C. sub. 1 -C. sub.

US Patent:

59940492, Nov 30, 1999

Filed:

Aug 28, 1997

Appl. No.:

8/921944

Inventors:

Julia S. Tan - Rochester NY
Ramesh Jagannathan - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03C 1015
G03C 104
G03C 1047

US Classification:

430569

Abstract:

A method is disclosed for washing silver halide photographic emulsions, including desalting and/or concentrating, based on depletion phase separation mechanism, wherein phase separation is effected by the addition of water-soluble non-interactive and non-adsorbing non-ionic polymers or non-ionic surfactant micelles. The process involves the separation of the supernatant fluid, containing the undesirable water-soluble salts and the added phase separating agents, from the washed and condensed silver halide phase and redispersion of the latter.

US Patent:

60047402, Dec 21, 1999

Filed:

Aug 28, 1997

Appl. No.:

8/924070

Inventors:

Julia S. Tan - Rochester NY
Ramesh Jagannathan - Rochester NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

G03C 1015
G03C 104
G03C 1047

US Classification:

430569

Abstract:

A method is disclosed for washing silver halide photographic emulsions, including desalting and/or concentrating, based on depletion phase separation mechanism, wherein phase separation is effected by the addition of water-soluble non-interactive and non-adsorbing carboxyl polymers. The process involves the separation of the supernatant fluid, containing the undesirable water soluble salts and the added phase separating agents, from the washed and condensed silver halide phase for desalting and redispersion of the latter.

US Patent:

60175222, Jan 25, 2000

Filed:

Apr 25, 1997

Appl. No.:

8/845421

Inventors:

Dennis E. Butterfield - Rochester NY
Dennis K. Fujii - Downingtown PA
David L. Ladd - Wayne PA
Robert A. Snow - West Chester PA
Julia S. Tan - Rochester NY
John L. Toner - Downingtown PA

Assignee:

Sterling Winthrop Inc. - New York NY

International Classification:

A61K 3177
A61K 4900
A61K 5100
C08G 6548

US Classification:

424 7837

Abstract:

A composition suitable for use in diagnostic imaging or as a cell killing agent comprising a chelating residue linked via an amide linkage to a poly(alkylene oxide) moiety, said compisition having a molecular weight of at least 4,500; ##STR1## wherein: Z is a chelating residue; Q is a divalent poly(alkylene oxidylene) moiety having a carbon terminus at R and at L; L represents an amide linkage; E. sup. (b) is one or more counterions each having a charge of b; b is an integer from 1, 2 and 3; n is an integer selected from the group 1, 2, 3 and 4; w is zero or an integer from 1 to 5; M. sup. (+a) is a cation, having a charge of +a; a is an integer from 1 to 4; r is 0 or an integer from 1 to 3, provided that when r is 2-3, each M. sup. (+a) can be the same or different cation; d is the total charge on the chelating residue and is an integer from 0 to 10; d+. SIGMA. (b. multidot. w)+. SIGMA. (a. multidot. r)=O; and R is a capping moiety chosen from the group consisting of hydrogen, hydroxyl, C. sub. 1 -C. sub.