Mixed polysulfides and lubricants and functional fluids containing the same

US6001783A · kind A · utility

Assignee

• The Lubrizol Corporation · US

Inventors

• John S. Manka · Euclid, US
• William D. Abraham · Powell, US
• Stephen H. Roby · Chesterland, US
• James A. Supp · Parma, US
• Richard Yodice · Willoughby, US

Key dates

• Filing date: Mar 24, 1997
• Grant date: Dec 14, 1999
• Expiry date: Mar 24, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10N2070/02
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

This invention relates to a composition, comprising: PA1 (A) at least one compound selected from the group consisting of PA2 (A-1) a compound represented by the formula EQU T.sup.1 T.sup.2 --P(X.sup.1)--(S).sub.n --S--C (X.sup.2)--L.sup.1(A-I) PA2 (A-2) a compound represented by the formula EQU T.sup.3 T.sup.4 --P(X.sup.3)--(S).sub.n --S--(DMTD)--S--J (A-II) PA2 (A-3) a compound represented by the formula EQU L.sup.2 --C(X.sup.4)--(S).sub.n --S--(DMTD)--S--G (A-III) and PA2 (A-4) mixture of two or more of (A-1), (A-2) and (A-3); wherein in Formulae (A-I), (A-II) and (A-III): (DMTD) is a dimercaptothiadiazole nucleus; J is H, SR, --S--P(X.sup.5)--T.sup.5 T.sup.6 or --S--C(X.sup.6)-L.sup.3 G is H, SR or --S--C(X.sup.7)--L.sup.4 T.sup.1, T.sup.2, T.sup.3, T.sup.4, T.sup.5 and T.sup.6 are independently R, SR or OR; L.sup.1, L.sup.2, L.sup.3 and L.sup.4 are independently R, SR, OR or NRR; X.sup.1, X.sup.2, X.sup.3, X.sup.4, X.sup.5, X.sup.6 and X.sup.7 are independently O or S; each R is independently a hydrocarbyl group; and n is 1 to 4. In one embodiment, the inventive composition further comprises (B) an acylated nitrogen-containing compound having a substituent of at least about 10 …