951403-93-3Relevant academic research and scientific papers
Synthesis and antioxidancy of some n-Alkyl, t-Alkyl, homologous and isomeric lipidic alkylthiobisphenols
Tyman, John H. P.,Johnson, Robert A.
, p. 573 - 578 (2008/09/21)
To study the relationship between structure and properties of members of the lipidic thiobis phenol series, as extreme pressure additives in lubricants, a series of homologous compounds has been synthesised by the reaction of alkylphenols with sulphur dichloride. The isomeric n-nonylphenols have been reacted to form the C9 isomeric 2,2′-and 4,4′-thiobisphenols. Longer alkyl side-chains resulted mainly in the formation of 4,4′-thiobisphenols and some of the 2,2′ isomer. With short alkyl, particularly t-alkyl side-chains, steric hindrance resulted in the 2,2′-compound. Additive studies have indicated that the longer chain 4,4′ compounds possessed antioxidant properties comparable and superior to former commercial branched chain 2,2′ compounds produced from petrochemical intermediates. AOCS 2007.
