Amine composition
View Patent ↗The present invention provides novel polymeric amine compositions employing amine compounds having multiple tertiary amine groups. Methods of making these new compositions are also disclosed. Amine compositions and amine-epoxy compositions employing the polymeric amine compositions of the present invention are also provided.
1. An amine curing agent composition comprising:
(i) a polymeric amine composition comprising amine compounds having the formula:
wherein:
each R A is a methyl group;
each R B is an unsubstituted C 3 linear alkanediyl;
each X is R C —NH 2 ;
R C is an unsubstituted C 3 linear alkanediyl;
the polymeric amine composition has a number-average molecular weight (M n ) from about 250 to about 1500; and
n is an integer in a range from 0 to 10, inclusive; and
(ii) at least one multifunctional amine having 2 or more active amine hydrogens.
2. The composition of claim 1 , wherein the at least one multifunctional amine has 3 or more active amine hydrogens and 6 or more carbon atoms.
3. The composition of claim 1 , wherein the at least one multifunctional amine is an aliphatic amine, a cycloaliphatic amine, an aromatic amine, a Mannich base derivative of an aliphatic amine, a cycloaliphatic amine, or an aromatic amine, a polyamide derivative of an aliphatic amine, a cycloaliphatic amine, or an aromatic amine, an amidoamine derivative of an aliphatic amine, a cycloaliphatic amine, or an aromatic amine, an amine adduct derivative of an aliphatic amine, a cycloaliphatic amine, or an aromatic amine, or any combination thereof.
4. The composition of claim 1 , wherein the at least one multifunctional amine is a mixture of methylene bridged poly(cyclohexyl-aromatic)amines.
5. The composition of claim 1 , wherein the polymeric amine composition has a M n from about 300 to about 800.
6. The composition of claim 1 , wherein the multifunctional amine comprises a multifunctional amine having 3 or more active amine hydrogens.
7. The composition of claim 1 further comprising an epoxy component comprising at least one multifunctional epoxy resin.
8. The composition of claim 7 , wherein the stoichiometric ratio of epoxy groups in the epoxy component to reactive hydrogens in the polymeric amine composition ranges from about 1.5:1 to about 1:1.5.
9. The composition of claim 7 , wherein the stoichiometric ratio of epoxy groups in the epoxy component to reactive hydrogens in the polymeric amine composition ranges from about 1.3:1 to about 1:1.3.