Low-VOC polyamines
View Patent ↗A compound having formula (I) wherein R 1 , R 2 , R 3 , R 4 , R 5 and R 6 independently are hydrogen, C 1 -C 10 alkyl, C 5 -C 10 cycloalkyl, C 6 -C 10 aryl or C 7 -C 20 aralkyl; X is a difunctional group selected from the group consisting of C 2 -C 20 alkyl, C 5 -C 20 cycloalkyl, C 6 -C 10 aryl, C 8 -C 20 aryl alkyl, C 4 -C 20 heteroalkyl or C 10 -C 20 aryl heteroalkyl.
1. A compound having formula (I)
wherein R 1 , R 2 , R 3 , R 4 , R 5 and R 6 independently are hydrogen, C 1 -C 10 alkyl, C 5 -C 10 cycloalkyl, C 6 -C 10 aryl or C 7 -C 20 aralkyl; X is a difunctional C 9 -C 15 heteroalkyl group having only oxygen heteroatoms.
2. The compound of claim 1 in which R 1 and R 4 independently are hydrogen or C 1 -C 6 alkyl.
3. The compound of claim 2 in which R 2 , R 3 , R 5 and R 6 independently are hydrogen or C 1 -C 6 alkyl.
4. The compound of claim 3 in which R 1 and R 4 both are hydrogen or methyl and R 2 , R 3 , R 5 and R 6 independently are hydrogen or C 1 -C 4 alkyl.
5. A method for producing a compound of formula (I)
wherein R 1 , R 2 , R 3 , R 4 , R 5 and R 6 independently are hydrogen, C 1 -C 10 alkyl, C 5 -C 10 cycloalkyl, C 6 -C 10 aryl or C 7 -C 20 aralkyl; X is a difunctional C 9 -C 15 heteroalkyl group having only oxygen heteroatoms;
said method comprising reducing a compound of formula (II)
by contacting the compound of formula (II) with a reducing agent capable of reducing aliphatic nitro groups.
6. The compound of claim 4 in which R 1 and R 4 are hydrogen; and R 2 , R 3 , R 5 and R 6 are methyl.