Amine salts of thio-bis-lactone acids in combination with coadditive hydrocarbons are flow improvers for middle distillate fuel oils

摘要

Secondary amine salts of oil-soluble thio-bis-(C12-50 alkyl lactone acid), e.g. a di-tallow secondary amine bis salt of thio-bis (C22 lactone carboxylic acid), are useful in combination with a coadditive hydrocarbon such as an amorphous hydrocarbon or a hydrogenated polybutadiene in improving the cold flow properties of distillate hydrocarbon oils.