Carbodiimide compound and waterborne curable resin composition containing thereof
View Patent ↗It is the purpose of the present invention to provide a carbodiimide compound exhibiting superior water resistance and having good storage stability when it is applied to a waterborne coating composition, and a waterborne curable resin composition comprising thereof, and the carbodiimide compound of the present invention is represented by the following general formula (1): wherein X represents a bifunctional organic group containing at least one carbodiimide group, Y represents a structure in which a hydroxyl group is eliminated from a polyalkylene glycol monoalkyl ether, R 0 represents hydrogen or an alkyl group having 2 or less carbon atoms, R 1 represents an alkylene group having 4 or less carbon atoms, n represents 0 or 1 and m represents an integer of 11 or more, and wherein the repeating number of oxyalkylene group in the polyalkylene glycol monoalkyl ether is 6 to 40.
1. A carbodiimide compound represented by the formula (I):
wherein X represents a bifunctional organic group containing at least one carbodiimide group, Y represents a structure in which a hydroxyl group is eliminated from a polyalkylene glycol monoalkyl ether, R 0 represents hydrogen or an alkyl group having 2 or less carbon atoms, R 1 represents an alkylene group having 4 or less carbon atoms, n represents 0 or 1 and m represents an integer of 11 or more, and wherein the repeating number of oxyalkylene group in the polyalkylene glycol monoalkyl ether is 6 to 40.
2. A waterborne curable resin composition comprising the carbodiimide compound according to claim 1 and a resin having a carboxyl group.
3. The waterborne curable resin composition according to claim 2 , wherein the resin further has a hydroxyl group.
4. The waterborne curable resin composition according to claim 2 , further comprising a melamine resin, an isocyanate resin or an oxazoline compound as a curing agent.
5. The waterborne curable resin composition according to claim 4 , wherein the curing agent is a melamine resin.
6. The waterborne curable resin composition according to claim 2 , wherein the resin having a carboxyl group is at least one resin selected from the group consisting of a waterborne polyurethane resin, a waterborne polyepoxy resin, a waterborne polyester resin and a waterborne acryl resin.
7. A waterborne intermediate coating composition, which is used for a method comprising formation of a multilayer coating film by simultaneously curing by heating an intermediate coating film, a waterborne base coating film and a clear coating film which have been formed on an article, in the order, by wet-on-wet and which are uncured, and which comprises the waterborne curable resin composition according to claim 2 .
8. A method of using the waterborne curable resin composition according to claim 2 as a waterborne intermediate coating composition comprising forming a multilayer coating film by simultaneously curing by heating an intermediate coating film, a waterborne base coating film and a clear coating film which have been formed on an article, in the order, by wet-on-wet and which are uncured.
9. The waterborne curable resin composition according to claim 3 , further comprising a melamine resin, an isocyanate resin or an oxazoline compound as a curing agent.
10. The waterborne curable resin composition according to claim 3 , wherein the resin having a carboxyl group is at least one resin selected from the group consisting of a waterborne polyurethane resin, a waterborne polyepoxy resin, a waterborne polyester resin and a waterborne acryl resin.
11. The waterborne curable resin composition according to claim 4 , wherein the resin having a carboxyl group is at least one resin selected from the group consisting of a waterborne polyurethane resin, a waterborne polyepoxy resin, a waterborne polyester resin and a waterborne acryl resin.
12. The waterborne curable resin composition according to claim 5 , wherein the resin having a carboxyl group is at least one resin selected from the group consisting of a waterborne polyurethane resin, a waterborne polyepoxy resin, a waterborne polyester resin and a waterborne acryl resin.
13. A waterborne intermediate coating composition, which is used for a method comprising formation of a multilayer coating film by simultaneously curing by heating an intermediate coating film, a waterborne base coating film and a clear coating film which have been formed on an article, in the order, by wet-on-wet and which are uncured, and which comprises the waterborne curable resin composition according to claim 3 .
14. A waterborne intermediate coating composition, which is used for a method comprising formation of a multilayer coating film by simultaneously curing by heating an intermediate coating film, a waterborne base coating film and a clear coating film which have been formed on an article, in the order, by wet-on-wet and which are uncured, and which comprises the waterborne curable resin composition according to claim 4 .
15. A waterborne intermediate coating composition, which is used for a method comprising formation of a multilayer coating film by simultaneously curing by heating an intermediate coating film, a waterborne base coating film and a clear coating film which have been formed on an article, in the order, by wet-on-wet and which are uncured, and which comprises the waterborne curable resin composition according to claim 5 .
16. A waterborne intermediate coating composition, which is used for a method comprising formation of a multilayer coating film by simultaneously curing by heating an intermediate coating film, a waterborne base coating film and a clear coating film which have been formed on an article, in the order, by wet-on-wet and which are uncured, and which comprises the waterborne curable resin composition according to claim 6 .
17. A method of using the waterborne curable resin composition according to claim 3 as a waterborne intermediate coating composition comprising forming a multilayer coating film by simultaneously curing by heating an intermediate coating film, a waterborne base coating film and a clear coating film which have been formed on an article, in the order, by wet-on-wet and which are uncured.
18. A method of using the waterborne curable resin composition according to claim 4 as a waterborne intermediate coating composition comprising forming a multilayer coating film by simultaneously curing by heating an intermediate coating film, a waterborne base coating film and a clear coating film which have been formed on an article, in the order, by wet-on-wet and which are uncured.
19. A method of using the waterborne curable resin composition according to claim 5 as a waterborne intermediate coating composition comprising forming a multilayer coating film by simultaneously curing by heating an intermediate coating film, a waterborne base coating film and a clear coating film which have been formed on an article, in the order, by wet-on-wet and which are uncured.
20. A method of using the waterborne curable resin composition according to claim 6 as a waterborne intermediate coating composition comprising forming a multilayer coating film by simultaneously curing by heating an intermediate coating film, a waterborne base coating film and a clear coating film which have been formed on an article, in the order, by wet-on-wet and which are uncured.