Oligomeric aminoketones and their use as photoinitiators

Patent metadata

Field	Value
Publication number	US-2018251648-A1
Application number	US-201815965093-A
Country	US
Kind code	A1
Filing date	Apr 27, 2018
Priority date	Aug 12, 2013
Publication date	Sep 6, 2018
Grant date	—

Abstract

The invention relates to photoactive oligomeric aminoketones of general Formulae I and II, for compositions and inks curable with ultraviolet (UV) light. The oligomeric aminoketones of the general Formula I are made by condensation of aminoketones with aldehydes, and aminoketones of the general Formula II are made by acylation of aromatic amines with phthalic anhydride, followed by esterification with a polyol. The aminoketones provide good curability of energy curable coatings and inks with UV-A light, and are proposed for photoinitiator systems for low migration inks.

First claim

1 . (canceled)

2 . An aminoketone of the general Formula II:

wherein
Each R 3 is independently selected from branched or unbranched C 1-12 alkyl, or C 3-12 cycloalkyl radical; each of which is independently optionally substituted with R 7 ;
R 5 is selected from the group consisting of a di-, tri-, tetra-, penta- and hexavalent alkyl radical, which is optionally substituted by oxygen;
R 6 is selected from the group consisting of H, a branched or unbranched C 1-12 alkyl, and a C 3-12 aryl radical;
R 7 is selected from the group consisting of oxygen, nitrogen, and sulfur; and
r denotes an integer from 2-6.

3 - 6 . (canceled)

7 . A UV-curable coating or ink comprising an aminoketone according to claim 2 , wherein the coating or ink is capable of being cured by a light emitting diode (LED).

8 - 10 . (canceled)

11 . A UV-curable composition comprising one or more aminoketones of claim 2 , and one or more acrylates.

12 . The composition of claim 11 , which is a UV-curable coating or ink.

13 . The UV-curable coating or ink of claim 12 , that is curable with UV light having a wavelength of 310-400 nm.

14 . The UV-curable coating or ink of claim 12 , further comprising a colorant.

15 . The UV-curable coating or ink according to claim 12 , comprising no splitting type photoinitiators.

16 . A low migration printed material comprising the coating or ink of claim 12 .

17 . A cured material, obtained by curing the UV-curable coating or ink of claim 12 , with UV radiation.

Assignees

• Sun Chemical Corp

Inventors

• Gaudl Kai-Uwe
• Dieker Jürgen

Classifications

• C08F222/225

  the ester chains containing seven or more carbon atoms · CPC title

• C08F222/205

  the ester chains containing seven or more carbon atoms · CPC title

• C09D11/101 Primary

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

• C09D11/107

  from unsaturated acids or derivatives thereof · CPC title

• C09D11/037

  characterised by the pigment · CPC title