US 12,435,237 B2
UV resistant surfacing materials for composite parts
Junjie Jeffrey Sang, Newark, DE (US); and Dalip K. Kohli, Churchville, MD (US)
Assigned to CYTEC INDUSTRIES INC., Lawrence, NJ (US)
Appl. No. 17/789,012
Filed by Cytec Industries Inc., Princeton, NJ (US)
PCT Filed Dec. 23, 2020, PCT No. PCT/US2020/066941
§ 371(c)(1), (2) Date Jun. 24, 2022,
PCT Pub. No. WO2021/133972, PCT Pub. Date Jul. 1, 2021.
Claims priority of provisional application 62/954,361, filed on Dec. 27, 2019.
Prior Publication US 2023/0091593 A1, Mar. 23, 2023
Int. Cl. C09D 163/00 (2006.01); C08G 59/18 (2006.01); C08K 7/26 (2006.01); C09D 7/40 (2018.01); C09D 7/61 (2018.01)
CPC C09D 163/00 (2013.01) [C08G 59/184 (2013.01); C08K 7/26 (2013.01); C09D 7/61 (2018.01); C09D 7/70 (2018.01)] 21 Claims
OG exemplary drawing
 
1. A surfacing material comprising at least one curable resin layer, said curable resin layer comprising:
(A) one or more cycloaliphatic epoxy resin(s), each having two or more epoxy groups per molecule;
(B) an epoxy-amine adduct having two or more epoxy groups per molecule and obtained by a reaction of (i) an epoxy compound having two or more alicyclic epoxy groups per molecule with (ii) an amine compound having two or more amino groups per molecule;
(C) a curing agent and/or a catalyst;
(D) ceramic microspheres; and
(E) a flow control agent in the form of inorganic particles, which are not ceramic microspheres.