Dialkyl Carbonates of Branched Alcohols and their Use

Abstract

Disclosed are new dialkyl carbonates and their use in cosmetic and/or pharmaceutical preparations.

1 . A dialkyl carbonate of formula (I)
   R 1 O—CO—OR 2    (I)
   
       wherein
 R 1  is a 2-propyl-1-heptyl group and R 2  represents linear or branched or cyclic hydrocarbon moieties having 1 to 22 carbon atoms and 0 or 1 to 3 double bonds, or 
 R 1  is a 2-ethyl-1-butyl group, and R 2  represents linear or branched or cyclic hydrocarbon moieties having 1 to 22 carbon atoms and 0 or 1 to 3 double bonds, wherein R 2  is not 2-ethyl-1-butyl. 
 
     
     
         2 . The dialkyl carbonate as claimed in  claim 1 , wherein R 1  and R 2  are 2-propyl-1-heptyl. 
     
     
         3 . A dialkyl carbonate of formula (II)
   R 3 O—CO—OR 4    (II)
   
       wherein R 3  is chosen from the group consisting of the isodecyl, neodecyl isoundecyl, isododecyl, isotridecyl, 2-pentylnonyl, 2-hexyldecyl, 2-heptyl-undecyl, isostearyl, 2-octyl-dodecyl, 2-butyl-1-octyl and 2-ethyl-1-hexyl, and R 4  represents linear or branched or cyclic hydrocarbon moieties having 1 to 22 carbon atoms and 0 or 1 to 3 double bonds, wherein R 3  is not identical to R 4 , and excluding the compounds 2-butyl-1-octyl methyl carbonate and 2-ethyl-1-hexyl methyl carbonate. 
     
     
         4 . A dialkyl carbonate of formula (III)
   R 5 O—CO—OR 6    (III)
   
       in which R 5  represents linear or branched or cyclic hydrocarbon moieties having 1 to 22 carbon atoms and 0 or 1 to 3 double bonds and R 6  represents branched hydrocarbon moieties having more than 12 carbon atoms and 0 or 1 double bond, wherein R 5  is not identical to R 6 . 
     
     
         5 . A dialkyl carbonate of formula (V)
   R 9 O—CO—OR 10    (V)
   
       in which R 9  represents branched or cyclic hydrocarbon radicals having 1 to 22 carbon atoms and 0 or 1 to 3 double bonds and R 10  represents branched hydrocarbon radicals having more than 12 carbon atoms and 0 or 1 to 3 double bonds, and excluding the compound methyl (2R, 6R, 3E)-6,10-dimethyl-3,9-undecadien-2-yl carbonate. 
     
     
         6 . A method of preparing cosmetic and/or pharmaceutical preparations, comprising adding at least one dialkyl carbonate of  claim 1 . 
     
     
         7 . A method of preparing cosmetic and/or pharmaceutical preparations comprising adding at least one dialkyl carbonate of the formula (IV)
   R 7 O—CO—OR 8    (IV)
   
       in which R 7  represents branched hydrocarbon radicals having 3 to 22 carbon atoms and 0 or 1 to 3 double bonds and R 8  represents linear or branched or cyclic hydrocarbon radicals having 3 to 22 carbon atoms and 0 or 1 to 3 double bonds and wherein R 7  is not identical to R 8 , wherein compounds of structure 
       
         
           
           
               
               
           
         
       
       in which R represents methyl, ethyl or isopropyl, are excluded. 
     
     
         8 . The method of  claim 7 , wherein R 8  represents a branched hydrocarbon moiety having 3 to 22 carbon atoms and 0 or 1 to 3 double bonds. 
     
     
         9 . The method of  claim 7 , wherein said dialkyl carbonates contain more than 12 carbon atoms. 
     
     
         10 . The method of  claim 6  wherein said at least one dialkyl carbonate is used as an oil substance or as an agent which imparts consistency.