Beta-hydroxyalklyamides, process for their production and their use

Abstract

This invention relates to a β-hydroxyalkylamide having the general Formula I: where R 1 is H or a linear or branched C 1 to C 10 alkyl and R 2 is a linear or branched C, to C 5 alkyl.

1 . β-hydroxyalkylamide having the general Formula I:  
       
         
           
           
               
               
           
         
       
       where R 1  is H or a linear or branched C 1  to C 10  alkyl and R 2  is a linear or branched C 1  to C 5  alkyl.  
     
     
         2 . β-hydroxyalkylamide as claimed in  claim 1 , characterized by the fact that R 1  is H, t-butyl, i-propyl or pentyl and is located in the para position to the CO group.  
     
     
         3 . β-hydroxyalkylamide as claimed in  claim 2 , characterized by the fact that R 1  is H and R 2  is CH 3 .  
     
     
         4 . Process for the production of β-hydroxyalkylamides as claimed in at least one of the  claims 1  to  3 , characterized by the fact that a carboxylic acid derivative having the general Formula II:  
       
         
           
           
               
               
           
         
       
       where R 3  is halogen or OR4, whereby R 4  stands for a linear C 1  to C 5  alkyl, is reacted with an alkanol amine having the general Formula III:  
       
         
           
           
               
               
           
         
       
       and where R 1  and R 2  are defined as indicated above.  
     
     
         5 . Process as claimed in  claim 4 , characterized by the fact that a carboxylic acid derivative having the general Formula II where R 3  is a halogen is reacted at −10 to 25° C. with the alkanol amine having the general Formula III.  
     
     
         6 . Process as claimed in  claim 5 , characterized by the fact that benzoyl chloride is used as the carboxylic acid derivative and diisopropanol amine as the alkanol amine.  
     
     
         7 . Process as claimed in  claim 4 , characterized by the fact that a carboxylic acid derivative having the general Formula II with R 3 —OR 4 , where R 2  is as defined above, is reacted at 25 to 150° C. with an alkanol amine having the general Formula III.  
     
     
         8 . Process as claimed in at least one of the  claims 4  to  7 , characterized by the fact that the carboxylic acid derivative having the general Formula II and the alkanol amine having the general Formula III are reacted in a solvent with vigorous agitation or stirring.  
     
     
         9 . Process as claimed in at least one of the  claims 4  to  8 , characterized by the fact that aromatic hydrocarbons such as benzene, toluene or xylene and/or ether are used as the solvent.  
     
     
         10 . Process as claimed in at least one of the  claims 4  to  9 , characterized by the fact that the alkanol amine is presented first and the carboxylic acid derivative is added with vigorous agitation or stirring.  
     
     
         11 . Use of the β-hydroxyalkylamide as claimed in one of the  claims 1  to  3  as a cross linker for polymers.  
     
     
         12 . Use of the β-hydroxyalkylamide as claimed in one of the  claims 1  to  3  as a cross linker for powder coats.  
     
     
         13 . Use as claimed in  claim 10 , characterized by the fact that it is used as a cross linker for polyester powder coats.  
     
     
         14 . Use as claimed in  claim 11 , characterized by the fact that a mixture of β-hydroxyalkylamide and another cross linker selected from the β-hydroxyalkylamides and/or epoxies is used as the cross linker.