Synthesis of polymers from fatty alcohol and acrylic acid and its impact on tribological properties.

Anhydride copolymers were synthesized from acrylic acid and fatty alcohols (C12- C18, C18:1). These n-alkyl acrylates were treated with maleic anhydride in presence of hydrogen peroxide in second step, to form anhydride copolymer. The anhydride copolymer further reacted to n-butylamine to form poly (n-acrylate-co-nbutylmalemide). The compounds were used as pour point depressant (PPD) additive. The synthesized experimental pour point depressants were added in different concentrations to conventional base stock (150N and 500N), which had no other additive content before. Synthesized additives were effective as viscosity index improver but also lowered the pour point. These results were comparable with industrial product. Furthermore all additives showed antiwear (AW) and extreme pressure (EP) properties. The resultant anhydride copolymer can act as multifunctional additive, which is novelty of the work.