16-01-2020 дата публикации
Номер: US20200017629A1
A curing agent for epoxy resins, containing at least one amine adduct of formula (I) which can be obtained as an addition product of a mixture of a primary diamine, a monoalkylated other diamine and a polyepoxide. The curing agent makes it possible to produce low-odor, low-emission epoxy resin products, in particular coatings, which have a surprisingly low viscosity, a high curing rate, a high final hardness, and a surprisingly appealing surface. 2. The curing agent as claimed in claim 1 , wherein Ais selected from the group consisting of 2-methyl-1 claim 1 ,5-pentylene claim 1 , 1 claim 1 ,6-hexylene claim 1 , 2 claim 1 ,2(4) claim 1 ,4-trimethyl-1 claim 1 ,6-hexamethylene claim 1 , 1 claim 1 ,3-cyclohexylenebis(methylene) claim 1 , 1 claim 1 ,4-cyclohexylenebis(methylene) claim 1 , 1 claim 1 ,3-phenylenebis(methylene) claim 1 , 1 claim 1 ,4-phenylenebis(methylene) claim 1 , 1 claim 1 ,2-cyclohexylene claim 1 , 1 claim 1 ,3-cyclohexylene claim 1 , 1 claim 1 ,4-cyclohexylene claim 1 , (1 claim 1 ,5 claim 1 ,5-trimethylcyclohexan-1-yl)methane-1 claim 1 ,3 claim 1 , 4(2)-methyl-1 claim 1 ,3-cyclohexylene claim 1 , 3-aza-1 claim 1 ,5-pentylene claim 1 , 3 claim 1 ,6-diaza-1 claim 1 ,8-octylene claim 1 , 3 claim 1 ,6 claim 1 ,9-triaza-1 claim 1 ,11-undecylene claim 1 , 3 claim 1 ,6 claim 1 ,9 claim 1 ,12-tetraaza-1 claim 1 ,14-tetradecylene claim 1 , 3 claim 1 ,6 claim 1 ,9 claim 1 ,12 claim 1 ,15-pentaaza-1 claim 1 ,17-heptadecylene claim 1 , 4-aza-2 claim 1 ,6-heptylene claim 1 , 4-aza-1 claim 1 ,7-heptylene claim 1 , 4 claim 1 ,7-diaza-1 claim 1 ,10-decylene and 7-aza-1 claim 1 ,13-tridecylene.3. The curing agent as claimed in claim 1 , wherein Ais an alkylene radical having 2 to 6 carbon atoms.4. The curing agent as claimed in claim 1 , wherein Ais 1 claim 1 ,2-propylene and Ais selected from the group consisting of 2-methyl-1 claim 1 ,5-pentylene claim 1 , 1 claim 1 ,6-hexylene claim 1 , 2 claim 1 ,2(4) claim 1 ,4-trimethyl-1 claim 1 ,6-hexamethylene claim 1 , 1 ...
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