US 12,404,362 B2
Curable resin system
Derek Kincaid, Spring, TX (US); Dong Le, Richmond, TX (US); and David Lanham Johnson, The Woodlands, TX (US)
Assigned to HUNTSMAN ADVANCED MATERIALS AMERICAS LLC
Appl. No. 16/500,415
Filed by Huntsman Advanced Materials Americas LLC, The Woodlands, TX (US)
PCT Filed Apr. 18, 2018, PCT No. PCT/US2018/028157
§ 371(c)(1), (2) Date Oct. 3, 2019,
PCT Pub. No. WO2018/195192, PCT Pub. Date Oct. 25, 2018.
Claims priority of provisional application 62/486,514, filed on Apr. 18, 2017.
Prior Publication US 2020/0123310 A1, Apr. 23, 2020
Int. Cl. C08G 59/32 (2006.01); B29C 70/06 (2006.01); C08G 59/50 (2006.01); C08J 5/04 (2006.01); B29K 63/00 (2006.01)
CPC C08G 59/3227 (2013.01) [B29C 70/06 (2013.01); C08G 59/5033 (2013.01); C08J 5/04 (2013.01); B29K 2063/00 (2013.01); C08J 2363/00 (2013.01)] 11 Claims
 
1. A process for forming a fiber-reinforced epoxy composite material, comprising:
a) mixing an epoxy component with a curing component and a catalyst comprising a phosphonium salt, or an ammonium salt, or mixtures thereof to form a curable resin system, wherein the epoxy component contains an alkylated glycidyl amine obtained from the reaction of an epihalohydrin and an alkyl aromatic amine, and the curing component contains a phenylindane diamine, wherein the alkylated glycidyl amine has two to five epoxy groups in its molecule and is present in amounts of at least 60 wt % based on the total weight of the epoxy component;
b) transferring the curable resin system into a mold that contains reinforcing fibers;
b) curing the curable resin system in the mold at an elevated temperature to form a fiber-reinforced composite material in which the reinforcing fibers are embedded in a polymeric matrix formed by curing the curable resin system and, wherein the polymeric matrix attains a glass transition temperature of at least 150° C. and a degree of cure of 85% or higher upon curing at 150° C.;
c) demolding the fiber-reinforced composite material.