Non-phthalic plasticiser

Abstract

The present invention refers to a plasticiser, said plasticiser being an ester formed by reaction of a pentaerythritol and a monocarboxylic acid, having 4-5 carbon atoms. In a further aspect the present invention refers to the use of said plasticiser in blends and in a PVC resin. The plasticiser of the present invention is a non-phthalic plasticiser that has proven to have shorter fusion time and higher plasticising efficiency compared to commercial non-phthalic PVC plasticisers.

1 . A plasticiser, said plasticiser comprising an ester formed by reaction of a polyol and a monocarboxylic acid, characterised in that said ester has a general formula (1) of 
       
         
           
           
               
               
           
         
       
       where R 1 , R 2 , R 3  and R 4  represent —O—CO-alkyl groups containing 4-5 carbon atoms, wherein said polyol is pentaerythritol and wherein said —O—CO-alkyl group is selected from the group consisting of butyrate, valerate and a mixture thereof. 
     
     
         2 . A plasticiser according to  claim 1 , characterised in that at least one of said —O—CO-alkyl groups is butyrate. 
     
     
         3 . A plasticiser according to  claim 1 , characterised in that at least two of said —O—CO-alkyl groups are butyrates. 
     
     
         4 . A plasticiser according to  claim 1 , characterised in that at least three of said —O—CO-alkyl groups are butyrates. 
     
     
         5 . A plasticiser according to  claim 1 , characterised in that said monocarboxylic acid is butyric acid. 
     
     
         6 . A plasticiser according to  claim 1 , characterised in that said monocarboxylic acid is valeric acid. 
     
     
         7 . A plasticiser blend, characterised in that 1-20 parts by weight of a plasticiser according to any of the  claims 1 - 6  is blended with 1-20 parts by weight of an oligo ester of 2-ethylhexanol and furandicarboxylic acid. 
     
     
         8 . A plasticiser blend according to  claim 7 , characterised in that 1-5 parts by weight of a plasticiser according to any of the  claims 1 - 6  is blended with 1-5 parts by weight of an oligo ester of 2-ethylhexanol and furandicarboxylic acid. 
     
     
         9 . A plasticiser blend according to  claim 7 , characterised in that 1-2 parts by weight of a plasticiser according to any of the  claims 1 - 6  is blended with 1-2 parts by weight of an oligo ester of 2-ethylhexanol and furandicarboxylic acid. 
     
     
         10 . Use of a plasticiser according to any of the  claims 1 - 9  in a PVC resin. 
     
     
         11 . Use of a plasticiser according to  claim 10  with pentaerythritol adipate as co-stabiliser.