Blocked isocyanate, coating composition, adhesive composition, and article

A coating composition comprising a blocked isocyanate,

• wherein the blocked isocyanate is a blocked isocyanate containing a latent isocyanate group, which is an isocyanate group blocked with a blocking agent,
• the blocked isocyanate comprises a first latent isocyanate group that is an isocyanate group blocked with a first blocking agent and a second latent isocyanate group that is an isocyanate group blocked with a second blocking agent,
• the first latent isocyanate group and the second latent isocyanate group are both present in one molecule, or are present separately in different molecules in which only the first latent isocyanate group is present in one molecule and only the second latent isocyanate group is present in another molecule,
• the first blocking agent is represented by general formula (1) below,
• a dissociation temperature at which the first blocking agent and the second blocking agent in the blocked isocyanate comprising the first latent isocyanate group and the second latent isocyanate group are dissociated is lower than a dissociation temperature at which the second blocking agent in a blocked isocyanate comprising only the second latent isocyanate group and not comprising the first latent isocyanate group is dissociated,
• the second blocking agent is at least one blocking agent selected from the group consisting of an amine compound, a pyrazole compound and an imidazole compound,
• the amine compound is at least one selected from the group consisting of diisopropylamine, 2,6-dimethylpiperidine, t-butylethylamine, and t-butylbenzylamine,
• the imidazole compound is imidazole, and
• the first latent isocyanate group content relative to a total amount in mol of the first latent isocyanate group and the second latent isocyanate group is 1 mol % or more and 80 mol % or less,
• (where R1 to R3 represent a hydrocarbon group having 1 to 12 carbon atoms or a hydrogen atom, and at least one of R1 to R3 represents a hydrogen atom, and R1 and R3 are optionally bonded to each other to form a heterocycle;
• R4 represents an atomic group represented by —NR5R6 (R5 and R6 represent a hydrocarbon group having 1 to 12 carbon atoms, and R5 and R1 are optionally bonded to each other to form a heterocycle and R6 and R3 are optionally bonded to each other to form a heterocycle)).

An adhesive composition comprising a blocked isocyanate,

• wherein the blocked isocyanate is a blocked isocyanate containing a latent isocyanate group, which is an isocyanate group blocked with a blocking agent,
• the blocked isocyanate comprises a first latent isocyanate group that is an isocyanate group blocked with a first blocking agent and a second latent isocyanate group that is an isocyanate group blocked with a second blocking agent,
• the first latent isocyanate group and the second latent isocyanate group are both present in one molecule, or are present separately in different molecules in which only the first latent isocyanate group is present in one molecule and only the second latent isocyanate group is present in another molecule,
• the first blocking agent is represented by general formula (1) below,
• a dissociation temperature at which the first blocking agent and the second blocking agent in the blocked isocyanate comprising the first latent isocyanate group and the second latent isocyanate group are dissociated is lower than a dissociation temperature at which the second blocking agent in a blocked isocyanate comprising only the second latent isocyanate group and not comprising the first latent isocyanate group is dissociated,
• the second blocking agent is at least one blocking agent selected from the group consisting of an amine compound, a pyrazole compound and an imidazole compound,
• the amine compound is at least one selected from the group consisting of diisopropylamine, 2,6-dimethylpiperidine, t-butylethylamine, and t-butylbenzylamine,
• the imidazole compound is imidazole, and
• the first latent isocyanate group content relative to a total amount in mol of the first latent isocyanate group and the second latent isocyanate group is 1 mol % or more and 80 mol % or less,
• (where R1 to R3 represent a hydrocarbon group having 1 to 12 carbon atoms or a hydrogen atom, and at least one of R1 to R3 represents a hydrogen atom, and R1 and R3 are optionally bonded to each other to form a heterocycle;
• R4 represents an atomic group represented by —NR5R6 (R5 and R6 represent a hydrocarbon group having 1 to 12 carbon atoms, and R5 and R1 are optionally bonded to each other to form a heterocycle and R6 and R3 are optionally bonded to each other to form a heterocycle)).

An article coated with a coating composition,

• wherein the coating composition comprises a blocked isocyanate,
• the blocked isocyanate is a blocked isocyanate containing a latent isocyanate group, which is an isocyanate group blocked with a blocking agent,
• the blocked isocyanate comprises a first latent isocyanate group that is an isocyanate group blocked with a first blocking agent and a second latent isocyanate group that is an isocyanate group blocked with a second blocking agent,
• the first latent isocyanate group and the second latent isocyanate group are both present in one molecule, or are present separately in different molecules in which only the first latent isocyanate group is present in one molecule and only the second latent isocyanate group is present in another molecule,
• the first blocking agent is represented by general formula (1) below,
• a dissociation temperature at which the first blocking agent and the second blocking agent in the blocked isocyanate comprising the first latent isocyanate group and the second latent isocyanate group are dissociated is lower than a dissociation temperature at which the second blocking agent in a blocked isocyanate comprising only the second latent isocyanate group and not comprising the first latent isocyanate group is dissociated,
• the second blocking agent is at least one blocking agent selected from the group consisting of an amine compound, a pyrazole compound and an imidazole compound,
• the amine compound is at least one selected from the group consisting of diisopropylamine, 2,6-dimethylpiperidine, t-butylethylamine, and t-butylbenzylamine,
• the imidazole compound is imidazole, and
• the first latent isocyanate group content relative to a total amount in mol of the first latent isocyanate group and the second latent isocyanate group is 1 mol % or more and 80 mol % or less,
• (where R1 to R3 represent a hydrocarbon group having 1 to 12 carbon atoms or a hydrogen atom, and at least one of R1 to R3 represents a hydrogen atom, and R1 and R3 are optionally bonded to each other to form a heterocycle;
• R4 represents an atomic group represented by —NR5R6 (R5 and R6 represent a hydrocarbon group having 1 to 12 carbon atoms, and R5 and R1 are optionally bonded to each other to form a heterocycle and R6 and R3 are optionally bonded to each other to form a heterocycle)).

An article adhered using an adhesive composition,

• wherein the adhesive composition comprises a blocked isocyanate,
• the blocked isocyanate is a blocked isocyanate containing a latent isocyanate group, which is an isocyanate group blocked with a blocking agent,
• the blocked isocyanate comprises a first latent isocyanate group that is an isocyanate group blocked with a first blocking agent and a second latent isocyanate group that is an isocyanate group blocked with a second blocking agent,
• the first latent isocyanate group and the second latent isocyanate group are both present in one molecule, or are present separately in different molecules in which only the first latent isocyanate group is present in one molecule and only the second latent isocyanate group is present in another molecule,
• the first blocking agent is represented by general formula (1) below,
• a dissociation temperature at which the first blocking agent and the second blocking agent in the blocked isocyanate comprising the first latent isocyanate group and the second latent isocyanate group are dissociated is lower than a dissociation temperature at which the second blocking agent in a blocked isocyanate comprising only the second latent isocyanate group and not comprising the first latent isocyanate group is dissociated,
• the second blocking agent is at least one blocking agent selected from the group consisting of an amine compound, a pyrazole compound and an imidazole compound,
• the amine compound is at least one selected from the group consisting of diisopropylamine, 2,6-dimethylpiperidine, t-butylethylamine, and t-butylbenzylamine,
• the imidazole compound is imidazole, and
• the first latent isocyanate group content relative to a total amount in mol of the first latent isocyanate group and the second latent isocyanate group is 1 mol % or more and 80 mol % or less,
• (where R1 to R3 represent a hydrocarbon group having 1 to 12 carbon atoms or a hydrogen atom, and at least one of R1 to R3 represents a hydrogen atom, and R1 and R3 are optionally bonded to each other to form a heterocycle;
• R4 represents an atomic group represented by —NR5R6 (R5 and R6 represent a hydrocarbon group having 1 to 12 carbon atoms, and R5 and R1 are optionally bonded to each other to form a heterocycle and R6 and R3 are optionally bonded to each other to form a heterocycle)).