Use of a Fischer-Tropsch Derived White Oil in Food Contact Applications

Abstract

The present invention relates to the use of a Fischer-Tropsch derived white oil in food contact applications, wherein the Fischer-Tropsch derived white oil has a kinematic viscosity at 100° C. of in between more than 2 mm 2 /s and less than 7 mm 2 /s according to ISO 3014, and a content of mineral hydrocarbons with carbon numbers less than 25 of not more than 5% (w/w). Preferably, the Fischer-Tropsch derived white oil has a 5 wt % recovery boiling point of above 391° C. according to ASTM D 2887.

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       8 . A process for the preparation of polymer compositions for food contact, comprising preparing a Fischer-Tropsch derived white oil by:
 (a) hydrocracking/hydroisomerisating a Fischer-Tropsch derived feed, wherein the weight ratio of compounds having at least 60 or more carbon atoms and compounds having at least 30 carbon atoms in the Fischer-Tropsch derived feed is at least 0.2 and wherein at least 30 wt % of compounds in the Fischer-Tropsch derived feed have at least 30 carbon atoms;   (b) separating the product of step (a) into one or more lower boiling distillate fraction(s) and a higher boiling white oil precursor fraction;   (c) performing a pour point reducing step to the white oil precursor fraction obtained in step (b); and   (d) isolating a white oil by distilling the product of step (c) having a kinematic viscosity at 100° C. of in between more than 2 mm 2 /s and less than 7 mm 2 /s according to ISO 3014, and a content of mineral hydrocarbons with carbon numbers less than 25 of not more than 5% (w/w); and   (e) blending the white oil obtained in step (d) with the polymer.   
   
   
       9 . The process according to  claim 8 , wherein the Fischer-Tropsch derived white oil has a content of mineral hydrocarbons with carbon numbers less than 25 of not more than 3% (w/w). 
   
   
       10 . The process according to  claim 8 , wherein the Fischer-Tropsch derived white oil has a 5 wt % recovery boiling point of above 391° C. according to ASTM D 2887. 
   
   
       11 . The process according to  claim 8 , wherein the Fischer-Tropsch derived white oil has a 5 wt % recovery boiling point of above 400° C. 
   
   
       12 . The process according to  claim 8 , wherein the Fischer-Tropsch derived white oil has a kinematic viscosity at 40° C. of less than 55 mm 2 /s according to ISO 3014. 
   
   
       13 . The process according to  claim 8 , wherein the Fischer-Tropsch derived white oil has a flash point below 270° C., and above 220° C., as determined according to ISO 2592.