Cabot Corporation

Heather E Clarke

Paul S Palumbo

Bruce E MacKay

Tianqi Liu

Jinqi Xu

Stephane F Rouanet

Danny Pierre

Andrew P Dikan

Andrea Lebed

Alexander I Shaknovich

Alexander I Shakhnovich

Jodi A Bates

Disclosed herein are compositions (e.g., pigment dispersions or ink compositions such as inkjet ink compositions) comprising at least one quinacridone magenta pigment and at least one synergist selected from compounds (A) and (B) having the following structures, wherein each n is an integer independently ranging from 1 to 4, and R-Rare each independently selected from H, CH, Cl, and F, 

Synergists for quinacridone magenta pigments

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 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 are high structured carbon blacks, methods of synthesis and treatment, and dispersions and inkjet ink formulations prepared therefrom. The carbon black can have the following properties: OAN&#x2267;170 mL/100 g; and STSA ranging from 160 to 220 m/g. The carbon black can also have the following properties: OAN&#x2267;170 mL/100 g; and a ratio of STSA/BET surface area ranging from 0.7 to 1.

High structure carbon blacks

Disclosed herein are high structured carbon blacks, methods of synthesis and treatment, and dispersions and inkjet ink formulations prepared therefrom. The carbon black can have the following properties: OAN &#x2267;170 mL/100 g; and STSA ranging from 160 to 220 m/g. The carbon black can also have the following properties: OAN &#x2267;170 mL/100 g; and a ratio of STSA/BET surface area ranging from 0.7 to 1.

A composition useful as an inkjet ink is described as well as methods of making the composition. The composition includes a pigment and a polymer and the polymer may include a polyurethane. The composition exhibits properties that make it useful in thermal and piezo inkjet applications.

Growing community of inventors

Lancaster, MA, United States of America

Heather E Clarke