A composition containing one or more sulfur-containing compounds represented by the formula
(R
1
)
a
(X)(R
2
)
b
wherein R
1
and R
2
are the same or different and are the residue of an olefin (e.g., aliphatic, aromatic or cycloaliphatic olefin) having from 4 to 40 carbon atoms, X is the residue of a thiol or polythiol, a is a value from 1 to 6, and b is a value from 0 to 6. The composition has a kinematic viscosity at 100° C. (Kv
100
) from 2 to 300 cst, a kinematic viscosity at 40° C. (Kv
40
) from 5 to 4000 cst, a viscosity index (VI) from −100 to 300, and a Noack volatility of no greater than 90 percent. A process for producing the composition, a lubricating oil base stock and lubricating oil containing the composition, and a method for improving one or more of solubility and dispersancy of polar additives in a lubricating oil containing the composition.
High stability lubricating oil base stocks and processes for preparing the same
申请人:ExxonMobil Chemical Patents Inc.
公开号:US10961480B2
公开(公告)日:2021-03-30
Compounds having the formula (F-I) below are provided herein:
wherein: R1 is a C1-C5000 alkyl group; R2 is (i) a C4-C30 linear alkyl group or (ii) a C4-C5000 branched alkyl having the formula (F-II) below:
wherein R5 and R6 at each occurrence are each independently a hydrogen or a C1-C30 linear alkyl group and n is a positive integer, provided however, among all of R5 and R6, at least one is a C1-C30 linear alkyl group; and R7 is a hydrogen or a C1-C30 linear alkyl group; R3 is hydrogen or a C1-C5000 alkyl group; and R4 is a C1-C50 alkyl group or an aromatic group. Processes for preparing compounds of formula (F-I) as well as base stock and lubricant compositions containing compounds of formula (F-I) are also provided.
(EN) A catalyst composition comprising a transition metal complex selected from complexes of nickel and palladium with a fluoro-organic thiol or sulfide ligand, having a single sulfur atom in a ligating position and wherein the carbon atom adjacent the carbon to which the sulfur atom is attached has at least one fluoro substituent and with the proviso that said fluoro-organic thiol or sulfide does not contain any other ligating group or atom in a ligating position which will displace fluoro as a ligand, and an organometallic-reducing agent selected from the group of borohydride and organoaluminium halides and alkoxides. The catalyst is especially useful for the oligomerization of olefins to higher molecular weight olefins having a high degree of linearity.(FR) Une composition de catalyseur comprend un complexe d'un métal de transition sélectionné à partir de complexes de nickel et de palladium avec un ligand d'un thiol fluoro-organique ou de sulfure ayant un seul atome de soufre dans une position de coordination et où l'atome de carbone adjacent au carbone auquel l'atome de soufre est attaché possède au moins un substituant fluoro et à condition que ce sulfure ou thiol fluoro-organique ne contienne aucun autre atome ou groupe de coordination dans une position de coordination déplaçant le fluoro comme un ligand, et un agent de réduction organométallique sélectionné dans le groupe constitué d'alkoxydes et d'halogénures d'organoaluminium et de borohydrure. Le catalyseur est spécialement utile pour l'oligomérisation d'oléfines afin d'obtenir des oléfines de poids moléculaire supérieur ayant un degré élevé de linéarité.