US 12,441,898 B2
Viscosity modifiers for energy curable inks
Ramasamy Krishnan, Carlstadt, NJ (US); David Klein, Carlstadt, NJ (US); and Ilca Webster, Carlstadt, NJ (US)
Assigned to Sun Chemical Corporation, Parsippany, NJ (US)
Appl. No. 18/874,054
Filed by Sun Chemical Corporation, Parsippany, NJ (US)
PCT Filed Jul. 18, 2023, PCT No. PCT/US2023/028038
§ 371(c)(1), (2) Date Dec. 11, 2024,
PCT Pub. No. WO2024/020037, PCT Pub. Date Jan. 25, 2024.
Claims priority of provisional application 63/391,085, filed on Jul. 21, 2022.
Prior Publication US 2025/0163285 A1, May 22, 2025
Int. Cl. C09D 11/101 (2014.01); C09D 11/033 (2014.01); C09D 11/037 (2014.01)
CPC C09D 11/101 (2013.01) [C09D 11/033 (2013.01); C09D 11/037 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An energy curable composition, comprising:
(a) 50 wt % to 90 wt %, based on the total weight of the composition, of one or more ethylenically unsaturated monomers, or one or more ethylenically unsaturated oligomers, or combinations thereof; and
(b) 0.5 wt % to 3 wt %, based on the total weight of the composition, of one or more solvents selected from the group consisting of: 2,2,4-trimethyl-1,3-pentanediol isobutyrate (Texanol); 2,2,4-trimethyl-1,3-pentanediol diisobutyrate (TXIB); dipropylene glycol butyl ether (DPGBE mixes isomers); and blends thereof; wherein the amount of solvent refers to the total amount of all the solvents combined;
wherein the viscosity is reduced by equal to or greater than 20%, compared to a composition containing all of the same components except the solvent;
wherein the energy curable composition is curable at a UV energy dose of 30 to 1000 mJ/cm2; and
wherein energy curable refers to the cure achieved under exposure to electromagnetic sources producing an actinic effect.