Cabot Corporation

Polaroid Corporation

Dade Behring Marburg Gmbh

P B Diagnostic Systems, Inc.

Paul S Palumbo

Jinqi Xu

Frank A Meneghini

Dmitry Fomitchev

Yuan Yu

Tianqi Liu

Michael J Arnost

Hairuo Tu

Heather E Clarke

Jodi A Bates

Michael E Annunziato

James A Belmont

Stephen G Stroud

Feng Gu

Curtis E Adams

Elizabeth Burns

Alexander I Shaknovich

Barry B Corden

Ervina Halim

Samir Kumar

Andrea Lebed

Robert M Amici

Eugene N Step

Andriy Korchev

Jincheng Xiong

Charles M Zepp

John Mathew

Friedrich K Von Gottberg

Shai Inbar

Xiaofeng Zhang

Russell H Lewis

Joshua M Wimble

Patrick Sargent

Robert J Anderson

Bjoern Schimmoeller

Melanie G Lamprey

Elizabeth G Burns

Surface treated silica containing particles are combined with a resin to form a liquid prepolymer composition for use in additive manufacturing. A surface treatment on the silica containing particles may participate in polymerization of the composition. The silica containing particles may be colloidal silica or a silica polymer composite particle.

Composition for liquid-based additive manufacturing

Metal oxide-polymer composite particles have a median particle size D50 of 40-75 nm or 100-150 nm and an average RTA of at least 0.06. Alternatively or in addition, metal oxide-polymer composites comprise two or more populations of metal oxide particles differing in size, particle size distribution, or shape. Alternatively or in addition, the use of a multicomponent hydrophobizing system including an alkylsilane to fabricate metal oxide-polymer composite particles increases the tribocharge of the composite particles.

Composite particles for toner additives

The invention provides a process for preparing core-shell composite particles comprising a polyester, polymerized ethylenically unsaturated silane compounds, and optionally a hydrophobic surface treatment. The invention further provides a composite particle comprising a polyester and a radically polymerized ethylenically unsaturated silane compound.

Nanocomposites containing crystalline polyester and organosilica

Disclosed herein are inkjet ink compositions comprising: at least one pigment and at least one polyurethane comprising: at least one polypropylene glycol, and at least one diisocyanate. The at least one polyurethane contains at least 70 wt % polypropylene glycol relative to the at least one polyurethane and has a weight average molecular weight (M) of no more than 80,000.

Inkjet ink compositions

Disclosed herein are inkjet ink compositions comprising a polymer comprising the repeat units (A), (B), and (C), wherein: (A) is selected from &#x2014;N(R)(R)&#x2014; and &#x2014;N(R)&#x2014;; (B) is selected from C-Calkylene; C-Ccycloalkylene; C-Cheterocycloalkylene; arylene; heteroarylene; C-Cether; C-Cthioether; C-Cester; C-Cacetal; C-Camide; bisphenols; and oligomer and polymer moieties selected from polyether, polyester, polyamines, polycarbonate, polyacetal, polythioether, polyester amide, polyurethane, polyacrylate, polyolefin, and polyalkylsiloxane, and (C) comprises at least one group selected from: (i) &#x2014;C(R) (R)&#x2014;C(R)(OH)&#x2014;(C(R)(R))m-, (ii) &#x2014;C(R)(R)&#x2014;C(R)(H)&#x2014;C(O)&#x2014;, and (iii) &#x2014;C(R)(R)&#x2014;C(R)(H)&#x2014;S(O)(O); and (A) is bonded to the &#x2014;C(R)(R)&#x2014; group of (C), and (B) is bonded to (C).

Amphoteric polymers and use in inkjet ink compositions

Disclosed herein are polymers, which can be incorporated in pigment dispersions and inkjet ink compositions, comprising first monomers selected from ethylenically unsaturated hydrophobic monomers, and second monomers selected from maleic anhydride, maleic acid, and salts, esters, imides, and amides thereof. The polymers can have a portion of the second monomers functionalized with at least one organic group having a calcium index value greater than or equal to a calcium index value of phenylphosphonic acid. Additionally and/or alternatively, the at least one polymer can be crosslinked via the second monomers. Dispersions and inkjet ink compositions comprising such polymers can also further comprise at least one pigment and a liquid vehicle. Also disclosed are methods of making such polymers.

Polymers for inkjet ink compositions

Disclosed herein inkjet ink compositions comprising: (a) a carbon black having the following properties: OAN&#x2265;170 mL/100 g; and STSA ranging from 160 to 220 m/g; (b) at least one polymeric dispersant selected from polyoxyethylene/polyoxypropylene block copolymers, styrene-acrylic resins, styrene-methacrylic resins, styrene-maleic acid copolymers, and styrene-maleic anhydride copolymers; (c) at least one surfactant selected from ethoxylated siloxanes, succinic acid esters, and succinic acid salts; and (d) at least one polyurethane.

Disclosed herein are particulate core-shell materials, comprising a core comprising a polyurethane; and a shell comprising a polyacrylate, wherein the shell coats the core. Also disclosed are methods of making particulate core-shell materials, and aqueous dispersions and inkjet ink compositions comprising the same.

Core-shell polymeric materials

Polyurethanes containing at least one bisphosphonate group, as well as related compositions, articles, and methods, are disclosed.

Ink compositions

The present invention relates to a modified colorant comprising a colorant having attached at least one organic group. Various embodiments of the organic group are disclosed. For each of these embodiments, preferably the organic group has a defined calcium index value. Also disclosed are various uses for these modified colorants, including inkjet ink compositions.

Modified colorants and inkjet ink compositions comprising modified colorants

The present invention relates to a method of preparing a pigment composition comprising the steps of combining a polymer and a pigment to form a mixture and heating the mixture to a temperature of between about 70&#xb0; C. and 250&#xb0; C. to form the pigment composition. The method may further comprise the step of dispersing the pigment composition in an aqueous medium to form an aqueous pigment dispersion. The pigment compositions and aqueous pigment compositions can be used in an inkjet ink composition, which is also disclosed.

Method of preparing pigment compositions

Growing community of inventors

West Newton, MA, United States of America

Paul S Palumbo