Curable composition and process for the manufacture of an epoxy thermoset
View Patent ↗Curable composition comprising at least one epoxy resin and at least one curing agent selected from derivatives of 5-hydroxymethylfurfural. Curable dispersion, curable prepolymer composition and process for manufacturing it. Process for the manufacture of an epoxy thermoset, epoxy thermoset and method for adhering at least two substrates.
1. A curable composition comprising
(a) at least one curing agent, wherein said curing agent is a derivative of 5-hydroxymethylfurfural corresponding to formula I
in which
R 1 and R 2 are both equal to —(CH 2 ) n —NH 2 ,
n is equal to 1, 2 or 3;
and
(b) at least one epoxy resin.
2. The curable composition according to claim 1 , in which the curing agent is 2, 5-bis (aminomethyl)tetrahydrofuran.
3. The curable composition according to claim 1 , in which curing agent (a) is the sole curing agent.
4. The curable composition according to claim 1 , further comprising at least one dispersing agent.
5. A method for adhering at least two substrates comprising:
applying the curable composition according to claim 1 to one or both of the substrates; and
bringing the substrates into a contacting relationship.
6. The method according to claim 5 , further comprising curing the epoxy resin.
7. The method according to claim 6 , wherein the curing is made at a temperature comprised between −25° C. and 200° C.
8. A process for the manufacture of an epoxy thermoset comprising:
forming a curable prepolymer composition comprising a prepolymer, which is the reaction product of at least one epoxy resin with at least one curing agent represented by Formula I below:
where R 1 and R 2 are both equal to —(CH 2 ) n —NH 2 , n is equal to 1, 2 or 3; and
reacting the curable prepolymer composition with at least one epoxy resin.
9. An epoxy thermoset obtained by the process according to claim 8 .