Aluminum chelate compound and room temperature-curable resin composition containing same

Abstract

Provided are an aluminum chelate compound useful as, for example, a curing catalyst for a room temperature-curable resin; and a room temperature-curable resin composition containing such aluminum chelate compound. This aluminum chelate compound is an aluminum chelate compound having a β-dicarbonyl compound represented by the following general formula (1): (wherein each of R 1 to R 3 represents a monovalent hydrocarbon group or a halogen atom; R 4 represents a hydrogen atom or a monovalent hydrocarbon group; and A is a group selected from a group represented by the following formula (2) and a group represented by —OR 8 : wherein each of R 5 to R 7 represents a monovalent hydrocarbon group or a halogen atom; and R 8 represents a monovalent hydrocarbon group).

1 .- 9 . (canceled) 
     
     
         10 . An aluminum chelate compound having a β-dicarbonyl compound represented by the following general formula (1): 
       
         
           
           
               
               
           
         
         (wherein each of R 1  to R 3  represents a halogen atom or a substituted or unsubstituted monovalent hydrocarbon group having 1 to 12 carbon atoms, R 1  to R 3  being either identical to or different from one another; R 4  represents a hydrogen atom or a substituted or unsubstituted monovalent hydrocarbon group having 1 to 12 carbon atoms; and A is a group represented by the following formula (2) or a group represented by —OR 8 : 
       
       
         
           
           
               
               
           
         
         wherein each of R 5  to R 7  represents a halogen atom or a substituted or unsubstituted monovalent hydrocarbon group having 1 to 12 carbon atoms, R 5  to R 7  being either identical to or different from one another; and R 8  represents a substituted or unsubstituted monovalent hydrocarbon group having 1 to 5 carbon atoms), 
         provided that an average coordination number of said β-dicarbonyl compound represented by the general formula (1) to aluminum is 0.5 to 2.5. 
       
     
     
         11 . The aluminum chelate compound according to  claim 10 , having a β-ketoester represented by the following formula (3) and a diketone represented by the following formula (4): 
       
         
           
           
               
               
           
         
         (wherein each of R 1  to R 3  represents a halogen atom or a substituted or unsubstituted monovalent hydrocarbon group having 1 to 12 carbon atoms, R 1  to R 3  being either identical to or different from one another; and R 8  represents a substituted or unsubstituted monovalent hydrocarbon group having 1 to 5 carbon atoms) 
       
       
         
           
           
               
               
           
         
         (wherein each of R 9  and R 10  represents a substituted or unsubstituted monovalent hydrocarbon group having 1 to 12 carbon atoms, R 9  and R 10  being either identical to or different from each other; and R 4  represents a hydrogen atom or a substituted or unsubstituted monovalent hydrocarbon group having 1 to 12 carbon atoms), 
         provided that an average molecular coordination number of said β-ketoester represented by the formula (3) to aluminum is 0.5 to 2.5, an average molecular coordination number of said diketone represented by the formula (4) to aluminum is 0.5 to 2.5, and an average molecular coordination number of a total of the formulae (3) and (4) is 3.0. 
       
     
     
         12 . The aluminum chelate compound according to  claim 10 , having a diketone represented by the following formula (5) and a β-ketoester represented by the following formula (6): 
       
         
           
           
               
               
           
         
         (wherein each of R 1  to R 3  represents a halogen atom or a substituted or unsubstituted monovalent hydrocarbon group having 1 to 12 carbon atoms, R 1  to R 3  being either identical to or different from one another; R 4  represents a hydrogen atom or a substituted or unsubstituted monovalent hydrocarbon group having 1 to 12 carbon atoms; and each of R 5  to R 7  represents a halogen atom or a substituted or unsubstituted monovalent hydrocarbon group having 1 to 12 carbon atoms, R 5  to R 7  being either identical to or different from one another) 
       
       
         
           
           
               
               
           
         
         (wherein R 11  represents a linear monovalent hydrocarbon group having 1 to 12 carbon atoms; and R 8  represents a substituted or unsubstituted monovalent hydrocarbon group having 1 to 5 carbon atoms), 
         provided that an average molecular coordination number of said diketone represented by the formula (5) to aluminum is 0.5 to 2.5, an average molecular coordination number of said β-ketoester represented by the formula (6) to aluminum is 0.5 to 2.5, and an average molecular coordination number of a total of the formulae (5) and (6) is 3.0. 
       
     
     
         13 . A resin curing catalyst comprising the aluminum chelate compound of  claim 10 . 
     
     
         14 . A room temperature-curable resin composition comprising:
 (A) 100 parts by mass of an alkoxysilyl-ethylene group terminated polymer having in one molecule at least one structure represented by the following general formula:   
       
         
           
           
               
               
           
         
       
       (wherein each of R 1  and R 2  represents a substituted or unsubstituted monovalent hydrocarbon group having 1 to 12 carbon atoms, R 1  and R 2  being either identical to or different from each other; and a represents 2 or 3); and
 (D) 0.001 to 15 parts by mass of an aluminum chelate compound according to  claim 10 . 
 
     
     
         15 . A room temperature-curable organopolysiloxane composition comprising:
 (B) 100 parts by mass of a diorganopolysiloxane having in one molecule at least two silicon atoms, each silicon atom being bonded to a hydroxyl group and/or a hydrolyzable group;   (C) 0.1 to 30 parts by mass of an alkoxysilyl-ethylene group-containing compound having in one molecule at least one structure represented by the following general formula:   
       
         
           
           
               
               
           
         
       
       (wherein each of R 1  and R 2  represents a substituted or unsubstituted monovalent hydrocarbon group having 1 to 12 carbon atoms, R 1  and R 2  being either identical to or different from each other; a represents 2 or 3; and n represents an integer of 0 to 10); and
 (D) 0.001 to 15 parts by mass of an aluminum chelate compound according to  claim 10 . 
 
     
     
         16 . A molded product obtained by curing the room temperature-curable resin composition of  claim 14 . 
     
     
         17 . A molded product obtained by curing the room temperature-curable resin composition of  claim 15 . 
     
     
         18 . A coating, adhesive or sealing agent comprising the room temperature-curable resin composition of  claim 14 . 
     
     
         19 . A coating, adhesive or sealing agent comprising the room temperature-curable resin composition of  claim 15 .