US 12,325,723 B2
Acylphosphineoxide initiators
Johan Loccufier, Mortsel (BE)
Assigned to Agfa NV, Mortsel (BE)
Appl. No. 17/252,585
Filed by Agfa NV, Mortsel (BE)
PCT Filed Jun. 4, 2019, PCT No. PCT/EP2019/064436
§ 371(c)(1), (2) Date Dec. 15, 2020,
PCT Pub. No. WO2019/243039, PCT Pub. Date Dec. 26, 2019.
Claims priority of application No. 18178501 (EP), filed on Jun. 19, 2018.
Prior Publication US 2021/0261581 A1, Aug. 26, 2021
Int. Cl. C07F 9/53 (2006.01); C07F 9/32 (2006.01); C09D 11/101 (2014.01); C09D 11/38 (2014.01)
CPC C07F 9/5337 (2013.01) [C07F 9/3252 (2013.01); C09D 11/101 (2013.01); C09D 11/38 (2013.01)] 18 Claims
 
1. An acyl phosphine oxide initiator comprising an acyl group selected from the group consisting of a benzoyl group substituted in position 3 by either a urea group or an oxalylamide group; a 2,6-dimethyl benzoyl group substituted in position 3 by either a urea group or an oxalylamide group; a 2,6-dimethoxy benzoyl group substituted in position 3 by either a urea group or an oxalylamide group; a 2,4,6-trimethyl benzoyl group substituted in position 3 by either a urea group or an oxalylamide group; and a 2,4,6-trimethoxybenzoyl group substituted in position 3 by either a urea group or an oxalylamide group,
wherein if the acyl group comprises a urea group, then the acyl phosphine oxide initiator does not comprise a thiol group, and
wherein the acyl phosphine oxide initiator is of Formula (I):

OG Complex Work Unit Chemistry
wherein
R1 is of Formula (II):

OG Complex Work Unit Chemistry
wherein
* is the point of attachment to Formula (I);
R4, R5 and R6 independently are selected from the group consisting of hydrogen, methyl, and methoxy;
R7 and R8 independently are selected from the group consisting of hydrogen, a substituted or unsubstituted C1-C10 alkyl group, a substituted or unsubstituted C2-C10 alkenyl group, a substituted or unsubstituted C2-C10 alkynyl group, a substituted or unsubstituted aralkyl group, a substituted or unsubstituted alkaryl group, a substituted or unsubstituted heteroaryl group, a (meth)acrylate containing group, and a (meth)acrylamide containing group; and
n is an integer having a value of 0 or 1;
R2 is selected from the group consisting of a substituted or unsubstituted aryl group, a substituted or unsubstituted heteroaryl group, and OR8; and
R3 is selected from the group consisting of a substituted and unsubstituted aryl group, a substituted or unsubstituted heteroaryl group, or is of Formula (II).