Reactive non-isocyanate coating compositions
View Patent ↗Reactive, non-isocyanate coating compositions prepared by mixing epoxy, tertiary amine, anhydride, hydroxy- and, optionally, acid functional compounds, a system of making the coating composition, a method of coating the composition on a substrate and a substrate coated with the composition.
1. A reactive non-isocyanate coating composition prepared by mixing epoxy, tertiary amine, anhydride, hydroxy- and acid functional compounds, the tertiary amine functional compound being an oligomeric or polymeric tertiary amine with or without other functional groups and wherein:
i. an acid functional compound and the tertiary amine functional compound are combined in a first polymer including tertiary amine and acid functional groups;
ii. the anhydride functional compound constitutes a second polymer and comprises a polymeric cyclic anhydride having two or more anhydride groups per molecule; and
iii. the epoxy and hydroxy-functional compounds are combined in a third polymer including epoxy and hydroxy-functional groups.
2. The composition of claim 1 , wherein the tertiary amine functional compound is an oligomeric or polymeric tertiary amine having two or more tertiary amine groups per molecule.
3. The composition of claim 1 , wherein the epoxy functional compound is an oligomeric or polymeric epoxy having two or more epoxy-functional groups per molecule.
4. The composition of claim 1 , wherein the tertiary amine functional compound is polymeric.
5. The composition of claim 1 , wherein the composition is a waterbome composition.
6. The composition of claim 1 , wherein the composition is a solvent-borne composition.
7. The composition of claim 1 , wherein the tertiary amine functional compound is an acrylic copolymer based on dimethylaminoethyl methacrylate.
8. The composition of claim 1 , wherein the anhydride functional compound is a polymeric cyclic diacid anhydride.
9. The composition of claim 1 , wherein the anhydride functional compound is a copolymer of maleic anhydride, styrene and acrylic monomers.
10. The composition of claim 1 , wherein the epoxy functional compound is an acrylic copolymer containing glycidyl methacrylate.
11. The composition of claim 1 , wherein anhydride functional groups of the anhydride functional compound react with hydroxy-functional groups of the hydroxy-functional compound, and tertiary amine functional groups of the tertiary amine functional compound react with epoxy functional groups of the epoxy functional compound.
12. A substrate coated with the coating composition of claim 1 .
13. A coating system having at least three components which are combined to make a coating composition, said components being: i) a first polymer including tertiary amine and acid functional groups obtained by combining an acid functional compound and an oligomeric or polymeric tertiary amine functional compound: ii) a second polymer comprised of polymeric cyclic anhydride having two or more anhydride groups per molecule: and, iii) a third polymer including epoxy and hydroxy-functional groups and obtained by combining oligomeric or polymeric epoxy functional compounds and hydroxy-functional compounds.
14. The coating system of claim 13 , wherein the coating composition is a waterborne composition.
15. The coating system of claim 13 , wherein the coating composition is a solvent-borne composition.
16. The coating system of claim 13 , wherein the tertiary amine functional compound is an acrylic copolymer based on dimethylaminoethyl methacrylate.
17. The coating system of claim 13 , wherein the polymeric cyclic anhydride is a copolymer of maleic anhydride, styrene and acrylic monomers.
18. The coating system of claim 13 , wherein the epoxy functional compound is an acrylic copolymer containing glycidyl methacrylate.
19. A substrate coated with the coating composition made from the coating system of claim 13 .