Nucleophilic aliphatic vinylic systems

Simple primary amides such as stearamide, oleamide, and erucamide are widely used in polyolehns and styrenics as lubricants, but mainly in vinyl as release agents, discussed in the following. Aliphatic amides are strong enough nucleophiles (at process temperatures) to detract from the heat stability of PVC, and are therefore used at low levels or in situations where heat aging is not critical. When the latter is the case, the above amides are excellent multifunctional lubricants in flexible film and sheet. Stearamide is used mainly in filled applications, oleamide in clear or translucent sheet. Although it is feasible to formulate stabilizer systems that overcome effects on heat stability, there has been a trend towards replacement with ester lubricants. 

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