Cabot Corporation

Andrew P Dikan

Bruce E MacKay

Stephane F Rouanet

Heather E Clarke

Danny Pierre

Tianqi Liu

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 aqueous dispersions comprising: at least one pigment present in an amount of at least 10% by weight relative to the total weight of the dispersion, the at least one pigment being selected from oxidized carbon blacks and modified carbon blacks having attached at least one organic group; and at least one organic solvent present in an amount of at least 10% by weight relative to the total weight of the dispersion, the at least one organic solvent having a Hansen hydrogen bonding parameter (&#x3b4;) ranging from 13 to 50 MPa, and a Hansen polarity parameter (&#x3b4;) ranging from 5 to 13 MPa, wherein the dispersion is substantially free of a surfactant. Also disclosed are methods of preparing aqueous dispersions and injet ink compositions prepared from the same.

Aqueous pigment dispersions

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.

Growing community of inventors

Boston, MA, United States of America

Andrew P Dikan