Eastman-kodak Company

Tamara K Jones

Mridula Nair

Joseph Salvatore Sedita

Charles Leo Bauer

Lloyd A Lobo

Xiqiang K Yang

Tiecheng A Qiao

Dennis J Massa

Grace Ann Bennett

Bradley M Houghtaling

Mary Christine Brick

Brian A Schell

David F Jennings

Joseph W Hoff

Jason Morgan

Daniel M Leusch

Dale E Hamilton

James G Popowych

Robert P Bourdelais

Yongcai Wang

Dinesh Tyagi

Thomas Henry Whitesides

Hwei-Ling Yau

David J Steklenski

Narasimharao Dontula

David M Teegarden

Myra T Olm

Jehuda Greener

Mark R Mis

YuanQiao Rao

Kevin M O'Connor

Daniel L Kapp

David Daniel Putnam

Robert J Kress

Scott C Moose

Terry A Heath

Cumar Sreekumar

David Charles Boris

Michael R Brickey

Anita M Fees

Jeffrey A Trest

James L Johnston

Faye Transvalidou

Ramasubramaniam Hanumanthu

Justin Z Gao

Gary A Rakes

Bonnie A Maye

Charles P Lusignan

Bobbi A Wohlschlegel

Dennis Jon Massa

Anita Marie Fees

James Gerard Popowych

A method of inkjet printing includes ink jetting an aqueous inkjet ink composition to form a white printed image on a substrate. The aqueous inkjet ink composition comprises particles of titanium dioxide that are present in an amount of at least 4 to 15 weight % and the particles have a 95percentile particle size of less than 200 nm and a 50percentile particle size of less than 130 nm. The titanium dioxide particles are dispersed within the aqueous inkjet ink composition using a dispersing polymer that is a styrene-(meth)acrylic acid polymer, styrene-maleic anhydride polymer, or styrene-maleic acid polymer and the weight ratio of the titanium dioxide particles to the dispersing polymer is from 19:1 to and including 2:1.

Method for ink jetting opaque ink composition

An aqueous dispersion contains pigment colorant particles that are present in an amount of at least 5 weight % and up to and including 80 weight %; a dispersing polymer that is a hexyloxy benzoic acid polymer; and an aqueous medium. The weight ratio of the pigment colorant particles to the dispersing polymer is from 19:1 to and including 2:1. Such aqueous dispersions can be incorporated into aqueous inkjet ink compositions that can be used for forming opaque images such as white images using inkjet printing methods.

Pigment dispersions and inkjet ink compositions

Inkjet printing is carried out on a substrate having a topmost layer comprising aqueous soluble multivalent metal cations and a hydrophilic polymeric binder. An aqueous inkjet ink composition is drawn from a main fluid supply as a continuous stream that is broken into both printing drops and non-printing drops, forming a white printed image on the substrate with the printing drops. The non-printing drops are collected and returned to the main fluid supply. The aqueous inkjet ink composition comprises particles of titanium dioxide in an amount of at least 4 to 15 weight %. The particles of titanium dioxide have a 95percentile particle size of less than 200 nm, a 50percentile particle size of less than 130 nm, and are dispersed using a dispersing polymer comprising acidic groups. The weight ratio of the particles of titanium dioxide to the dispersing polymer is 19:1 to 2:1.

Providing opaque ink jetted image

An aqueous dispersion contains pigment colorant particles (of various types of materials) at 5 weight % and up to and including 80 weight %; a dispersing polymer that is prepared from the Diels Alder adduct of 3-maleimidopropionic acid and furfuryl (meth)acrylate; and an aqueous medium. The weight ratio of the pigment colorant particles to the dispersing polymer is from 19:1 to and including 2:1. This aqueous dispersion can be incorporated into an aqueous inkjet ink composition that can be used in various inkjet printing methods to provide opaque images particularly when titanium dioxide particles are used as the pigment colorant.

Aqueous colorant dispersions and inkjet compositions

Ladies open panty

Porous organic polymeric films having multiple discrete cavities can be prepared using a water-in-oil emulsion that includes a cavity stabilizing hydrocolloid on the inner walls of the multiple discrete cavities. The multiple discrete cavities can also include organic catalytic materials for various catalytic reactions, markers materials for security applications, or the multiple discrete cavities can be used to increase opacity, hydrophobicity, or other desirable properties compared to nonporous organic polymeric films composed of the composition and dry thickness.

Porous organic polymeric films and preparation

Crosslinked polymeric organic porous particles have a crosslinked organic solid phase and discrete pores dispersed within the crosslinked organic solid phase, which discrete pores are isolated from each other. The crosslinked organic porous particles are prepared using one or more water-in-oil emulsions containing a polyfunctional reactive compound and a reagent that causes crosslinking, and can be incorporated into or applied to various articles for many purposes. If marker materials are incorporated into the crosslinked organic porous particles, these marker materials can be detected using appropriate instruments.

Article and system with crosslinked organic porous particles

Porous particles can be prepared using an evaporative limited coalescence process in which one or more discrete cavities are stabilized within the continuous polymeric solid phase of the porous particles. The one or more discrete cavities have inner walls and are dispersed within the continuous polymeric solid phase. The porous particles further comprise a cavity stabilizing hydrocolloid on the inner walls of the one or more discrete cavities, and an amphiphilic (low HLB) block copolymer that is disposed at the interface of the discrete cavities and the continuous polymeric solid phase.

Porous particles and methods of making them

A method of manufacturing porous core-shell polymer particles having a nonporous shell including: providing a first organic solvent containing a dissolved polymer; dispersing the organic solvent in an aqueous phase containing a stabilizer to form an emulsion; adding the emulsion to a second organic solvent wherein the second organic solvent is miscible with water and the first organic solvent, and a non-solvent for the polymer; and evaporating the first and second organic solvents from the emulsion to form core-shell polymer particles. The method results in core-shell polymer particles comprising a common binder polymer for the core and the shell wherein the core has a porosity and the shell is non-porous. The particles have a porosity from 10 to 70 percent.

Method for manufacturing porous particles with non-porous shell

Porous organic polymeric films having multiple discrete cavities can be prepared using an water-in-oil emulsion that includes a cavity stabilizing hydrocolloid on the inner walls of the multiple discrete cavities. The multiple discrete cavities can also include organic catalytic materials for various catalytic reactions, markers materials for security applications, or the multiple discrete cavities can be used to increase opacity, hydrophobicity, or other desirable properties compared to nonporous organic polymeric films composed of the composition and dry thickness.

The present invention is core-shell polymer particles comprising a common binder polymer for the core and the shell wherein the core has a porosity and the shell is non-porous The particles have a porosity from 10 to 70 percent.

Porous particles with non-porous shell

An article comprises one or more porous particles. Each porous particle comprises a polymer that provides a continuous solid phase including an external particle surface, and first and second discrete pores that are isolated from each other and dispersed within the continuous solid phase. The porous particle further comprises a first marker material present in the first discrete pores, and a second marker material that is detectably different from the first marker material and is present within the second discrete pores. The marker materials can provide a means for identifying documents, clothing, or other articles as genuine, and providing a detectable security system.

Articles with porous particles for security purposes

Polymeric porous particles have a continuous solid phase and at least two different internal pores that are isolated from each other within the continuous phase. At least one set of discrete pores contains a marker material, and some instances, each set of discrete pores contain different pores marker materials that are isolated from each other. These marker materials are detectably different from each other. The porous particles can be spherical or non-spherical and can be used in any situation where the detectably different marker materials can be evaluated.

Porous particles with multiple markers

An stable oil-in-oil emulsion is disclosed containing a first oil phase dispersed as droplets in a continuous second oil phase, which droplets have a number median diameter of 10 nm to 1000 nm, wherein the first oil phase is substantially immiscible in the second oil phase and wherein the first oil phase comprises a liquid organic phosphate compound. In one preferred embodiment, the first oil phase comprises colorants, polymers, and/or other additives, depending on the particular use of the emulsion.

Oil-in-oil emulsions

The present invention is toner particle that includes a continuous phase of binder polymer and a second phase of hydrocolloid. The particle has a porosity of at least 10 percent.

Toner porous particles containing hydrocolloids

Growing community of inventors

Rochester, NY, United States of America

Tamara K Jones