Epoxy resin hardener compositions and epoxy resin compositions containing such hardener compositions
An epoxy resin hardener composition including a reaction product of (i) a compound having at least one vicinal epoxy group, and (ii) an amino alcohol; an epoxy resin composition including the epoxy resin hardener composition and a compound having at least one vicinal epoxy group; and a powder coating composition including particles of the epoxy resin hardener composition and particles of a compound having at least one vicinal epoxy group.
1. A solid amino functional hardener composition comprising a reaction product of:
a compound having at least one vicinal epoxy group; and
an amino alcohol including at least one alkanolamine, where a mole ratio of amine groups of the amino alcohol including the at least one alkanolamine is in excess of the epoxy groups of the compound having at least one vicinal epoxy group in the range of from 25:1 to 3:1.
2. The solid amino functional hardener composition of claim 1 , where the at least one alkanolamine includes an amino polyol.
3. The solid amino functional hardener composition of claim 1 , where the at least one alkanolamine is selected from the group consisting of monoethanolamine, 2-amino-2-hydroxymethyl-1,3-propanediol and 2-amino-2-methyl-1,3-propanediol.
4. The solid amino functional hardener composition of claim 1 , where the molecular weight of the at least one alkanolamine is from about 150 Da to about 10,000 Da.
5. The solid amino functional hardener composition of claim 1 , where the compound having at least one vicinal epoxy group comprises a compound having two vicinal epoxy groups.
6. The solid amino functional hardener composition of claim 1 , where the compound having at least one vicinal epoxy group comprises a compound having the following formula:
where n is 0 or more.
7. The solid amino functional hardener composition of claim 1 useful as a hardener for one or more of the compounds selected from epoxy-, isocyanate-, carboxylic acid-, vinyl- and acrylic-functional resins.
8. The solid amino functional hardener composition of claim 1 , where the composition is dispersible in water.
9. The solid amino functional hardener composition of claim 1 , where the composition has a softening point of from about 30° C. to about 150° C.
10. The solid amino functional hardener composition of claim 1 , where the amino alcohol includes a primary amine group.
11. An epoxy resin composition, the composition comprising: a compound having at least one vicinal epoxy group, the solid amino functional hardener composition of claim 1 , and an accelerator.
12. An epoxy resin composition, the composition comprising: a compound having at least one vicinal epoxy group, the solid amino functional hardener composition of claim 1 , and a heterocyclic nitrogen containing compound.
13. An epoxy resin composition, the composition comprising: a compound having at least one vicinal epoxy group, the solid amino functional hardener composition of claim 1 , and one or more compounds with a secondary amine group.
14. An epoxy resin composition, the composition comprising: a compound having at least one vicinal epoxy group, the solid amino functional hardener composition of claim 1 , and one or more compounds with a primary amine group.