| abstract |
1457072 Reaction products of phosphorus esters or carboxylic acids with benzotriazole MOBIL OIL CORP 31 Jan 1974 [22 March 1973] 04582/74 Headings C2P and C2C [Also in Division C5] The invention comprises the product obtained by reacting, at 100 to 200 C., 1 mole of benzotriazole with from 0À5 to 1À0 mole of a carboxylic acid or of a mono- or di-organo phosphate or -phosphite ester, the acid and the phosphate or phosphite containing as the acid radical or as an ester-forming group respectively an organic group containing at least 15 carbon atoms. The benzotriazole used is generally the 1,2,3-isomer (1-H benzotriazole) and the acids used in the examples are oleic acid and a dimer acid (comprising 75% dimerized linoleic acid and 25% trimerized linoleic acid). The preferred phosphorus esters are the mono- and di-(nonylphenyl) phosphates and phosphites, examples being given for the use of the di-(nonylphenyl) phosphates and phosphites. The products are useful as anti-corrosion agents for copper and may be added to lubricants or hydrocarbon fuels, including gasoline. |