Adducts of polyalkylene glycol monoglycidyl ethers and amine compounds
View Patent ↗The present invention relates to adducts obtainable by reaction of: A) an amine compound containing 2 or more than 2 amino groups: with B) a polyalkylene glycol monoglycidyl ether of general formula (I), in which R independently of one another (for n>1), is an —H or —CH, radical, and n=1 to 50, characterized in that the reaction ratio of components A) and B) is selected in such a way that the resultant adduct contains 2 or more than 2 amine hydrogen groups: to curable compositions based on these adducts with epoxy resins, and to the use of these curable compositions as casting resin, adhesive, matrix resin, tooling resin or as coating composition, in particular for self-flowing coatings.
1. An adduct obtainable by reaction of:
A) an amine compound containing two or more than two amino groups, with
B) a polyalkylene glycol monoglycidyl ether of the general formula (I)
in which R, independently of one another (for n>1), is an —H or —CH 3 radical, and n is 1 to 50;
wherein the reaction ratio of components A) and B) is selected in such a way that the resultant adduct contains two or more than two amine hydrogen groups.
2. An adduct according to claim 1 , wherein n is 3 to 35 for the polyalkylene monoglycidyl ether of the general formula (I).
3. An adduct according to claim 1 , wherein the polyalkylene glycol monoglycidyl ether is prepared by the addition of epichlorohydrin onto polyalkylene glycol, and wherein said polyalkylene glycol has a mean molecular weight of from 200 to 2000.
4. The adduct of claim 3 , wherein said polyalkylene glycol is polypropylene glycol or polyethylene glycol.
5. An adduct according to claim 1 , wherein component A) is a cycloaliphatic, heterocyclic, aromatic polyamine, or imidazoline-containing polyaminoamide.
6. An adduct according to claim 1 , wherein the component A) is selected from the group consisting of isophoronediamine, xylylenediamine, bis(aminomethylcyclohexyl)methane and 2,2,4(2,4,4)-trimethylhexamethylene-1,6-diamine, triethylenetetramine, N-aminoethylpiperazine, 1,2-diaminocyclohexane and norbornanediamine.
7. An adduct according to claim 1 , wherein an excess of the amine compound is reacted with the polyalkylene glycol monoglycidyl ether.
8. The adduct of claim 7 , wherein from 1.5 to 10 times the molar amount of amine is introduced, and the polyalkylene glycol monoglycidyl ether is added thereto.
9. The adduct of claim 8 , wherein from 4 to 6 times the molar amount of amine is introduced.
10. A curable composition comprising
a) an epoxide compound containing on average more than one epoxide group per molecule; and
b) an adduct according to claim 1 .
11. A curable composition according to claim 10 , wherein n is 3 to 35 for the polyalkylene monoglycidyl ether of the formula (I).
12. A curable composition according to claim 10 , wherein the adduct b) is present in an amount such that from 0.5 to 1.25 functional groups of b) are present in the composition per epoxide group of component a).
13. A curable composition according to claim 12 , wherein the adduct b) is present in an amount such that from 0.75 to 1.25 functional groups of adduct b) are present in the composition per epoxide group of component a).
14. A curable composition according to claim 10 , wherein component a) is derived from a polyhydric or polycyclic phenol.
15. A curable composition according to claim 14 , where the phenol is bisphenol A, bisphenol F or a novolak.
16. The curable composition of claim 15 further comprising a reactive diluent.
17. A curable composition according to claim 10 , further comprising a diluent.
18. A product obtained by curing a composition according to claim 10 .