	US 12,325,768 B2
	Light-curable compositions useful for forming composite materials
Kyle Snow, King of Prussia, PA (US); and William Wolf, King of Prussia, PA (US)
Assigned to Arkema France, Colombes (FR)
Appl. No. 17/606,105
Filed by Arkema France, Colombes (FR)
PCT Filed Apr. 23, 2020, PCT No. PCT/IB2020/000417 § 371(c)(1), (2) Date Oct. 25, 2021, PCT Pub. No. WO2020/217101, PCT Pub. Date Oct. 29, 2020.
Claims priority of provisional application 62/838,372, filed on Apr. 25, 2019.
Prior Publication US 2022/0213245 A1, Jul. 7, 2022
Int. Cl. C08F 2/46 (2006.01); B29C 35/08 (2006.01); B33Y 70/00 (2020.01); C08F 2/50 (2006.01); C08F 122/32 (2006.01); C08F 222/32 (2006.01); C08G 61/04 (2006.01); C08J 5/04 (2006.01); C09D 135/04 (2006.01); B29C 64/124 (2017.01); B29K 33/04 (2006.01); B29K 507/04 (2006.01); B33Y 10/00 (2015.01)

CPC C08F 222/327 (2020.02) [B29C 35/0805 (2013.01); B33Y 70/00 (2014.12); C08F 122/32 (2013.01); C08J 5/042 (2013.01); C09D 135/04 (2013.01); B29C 2035/0827 (2013.01); B29C 64/124 (2017.08); B29K 2033/04 (2013.01); B29K 2507/04 (2013.01); B33Y 10/00 (2014.12); C08J 2335/04 (2013.01)]

28 Claims

1. A light-curable composition useful for forming a composite material, wherein the light-curable composition comprises:

a) a photoinitiator system comprising at least one of i) a combination of at least one metallocene compound comprising a transition metal of Group VIII of the periodic table and aromatic electron system ligands and at least one photocleavable compound which generates an acyl radical when exposed to light or ii) a photocleavable metallocene compound comprising a transition metal of Group VIII of the periodic table and aromatic electron system ligands which generates an acyl radical when exposed to light;

b) at least one cyanoacrylate; and

c) at least 10% by weight, based on total weight of the light-curable composition, of at least one opaque filler.