Digital printing inks

Patent metadata

Field	Value
Publication number	US-9587127-B2
Application number	US-201414763698-A
Country	US
Kind code	B2
Filing date	Jan 27, 2014
Priority date	Feb 6, 2013
Publication date	Mar 7, 2017
Grant date	Mar 7, 2017

Abstract

The acrylate monomers of the present invention, particularly o-phenyl phenoxyethyl acrylate, provide very fast curing, hard and solvent resistant digital printing inks, and yet are also still surprisingly flexible. These properties make for a technically superior alternative to the widely accepted very hard monomer isobornyl acrylate. O-phenyl phenoxyethylacrylate also has the additional benefit of being free from the strong odor associated with isobornyl acrylate.

First claim

We claim:

1. A printing ink composition comprising a colorant and a monomer of polyethylene glycol o-phenyl phenyl ether acrylate of formula (A):

wherein, n is 1 - 3,

or a monomer of formula (I):

wherein:
R 1 is selected from the group consisting of hydrogen, methyl and a hydroxyl group;
R 2 is either a hydrogen or a methyl group;
y is 1 to 6; and
Z is selected from the group consisting of formula (II), (III) and (IV):

wherein:
X is selected from the group consisting of a direct bond, O, CH 2 , C(CH 3 ) 2 and C═O;
p is 0 or 1;
Q is CH 2 or C═O;
R 3 and R 4 are selected from the group consisting of H, phenyl, dimethyl benzyl, C 1 -C 8 alkyl group and C 1 -C 8 alkoxy group, or alternatively R 3 and R 4 are joined to form a fused ring with the benzene rings to which they are attached; and
R 5 is —C(O)OR 6 , wherein R 6 is phenyl or C 1 - C 8 alkyl.

2. The printing ink composition of claim 1 , wherein the monomer of formula (I) or formula (A) is o-phenyl phenoxyethyl acrylate:

3. The printing ink composition of claim 1 , wherein the printing ink is a digital printing ink.

4. A digital printing ink composition comprising:
(a) the monomer of formula (A) or the monomer of formula (I) according to claim 1 ;
(b) a photoinitiator; and
(c) a colorant,
wherein, total photoinitiator content is from 1-15% by weight based on total weight of the ink.

5. A digital printing ink composition comprising the monomer of formula (A) or the monomer of formula (I) according to claim 1 present in an amount between 0.1-75% by weight of total weight of the ink.

6. A digital printing ink composition comprising the monomer of formula (A) or the monomer of formula (I) according to claim 1 present in an amount between 1-40% by weight of total weight of the ink.

7. A digital printing ink composition comprising the monomer of formula (A) or the monomer of formula (I) according to claim 1 present in an amount between 1-30% by weight of total weight of the ink.

8. A digital printing ink composition according to claim 1 , wherein the ink is an aerosol jet ink.

9. A printed article comprising the printing ink composition of claim 1 .

10. A method of printing a printing ink composition comprising applying to a substrate the printing ink composition of claim 1 .

Assignees

• Sun Chemical Corp

Inventors

• Herlihy Shaun Lawrence
• Wilber Jason
• Hall Stephen Anthony
• Rowatt Brian

Classifications

• C08K3/01

  characterized by their specific function · CPC title

• C08K5/0008

  Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59 · CPC title

• C09D11/101

  Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing · CPC title

• C08L33/14

  of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen · CPC title

• C09D11/30 Primary

  Inkjet printing inks · CPC title