Pentaerythritol adipate oleate

Polycondensation of dicarboxylic acids, polyols, and long-chain fatty acids yields so-called fatty acid complex esters, which are highly compatible PVC lubricants offering a good combination of release effect and transparency. Typical examples are glycerol adipate stearate or pentaerythritol adipate oleate. 

Complex esters like glycerol adipate stearate or pentaerythritol adipate oleate (Loxiol G 70 series) have been fully assessed by EFSA for the use in food-contact materials. These esters still function as lubricants but due to higher molecular weight migration from food-contact material to food is crmsiderably reduced. 

When mixed esters of polyols are prepared using, in part, a dibasic acid, the product is an ester lubricant that is a low polymer. This leads to a high order of resistance to extraction, bloom, or deposition. Pentaerythritol adipate-stearate is used in clear rigid PVC compounds as an efficient multifunctional lubricant, despite its relatively high cost. The corresponding adipate-oleate, a liquid, is more generally used in plasticized compounds in conjunction with mixed metal stabilizers, particularly if the latter are relatively nonlubricating. 

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