Patent ID: 9650552
Date: 2017-05-16
CPC Classifications: C08G,C08L,C09K,Y10T

Claim:
1. A curable aerospace sealant composition comprising: (a) 40 wt % to 60 wt % of a thiol-terminated polythioether, wherein the thiol-terminated polythioether comprises a thiol-terminated polythioether comprising the structure of Formula (1); wherein: (b) 0.5 wt. % to 20 wt. % microcapsules comprising a polymeric shell and a polyepoxy suspended in a solvent, wherein, (c) an amine catalyst, wherein the amine catalyst comprises triethylene diamine 1,8-diazabicycloundec-7-ene (DBU), 1,4-diazabicyclo[2.2.2]octane (DABCO), isophorone diamine (IPDA), and a C wherein wt % is based on the total solids weight of the curable composition.