NITROGEN CONTAINING ADDITIVES USEFUL IN DISTILLATION

摘要

Additives esp. useful for lowering the cloud point of middle distillates are prods. (I) with a molecular wt. of 300-19,000 prepd. by reacting at least one dicarboxylic cpd. (II) with at least one cpd. (III) having a primary amine function. (II) is selected from maleic and alkylmaleic anhydrides, alkenylsuccinic and polyalkenylsuccinic anhydrides and the corresp. dicarboxylic acids and lower alkyl diesters. (III) is of formula RZ((CH2)nNH)mH or HOCH2R5NH2 (where R is 1-30C alkyl; Z is NR' or O; R' is H or 1-30C alkyl; n=2-4; m=0-4; R5 is 1-18C alkylene). (I) not only lower the cloud point but also lower the cold filter plugging point and pour point and impart anticorrosion properties. (Provisional Basic previously advised in Week 83-48).