Polysulfided olefin compositions, their preparation and use as additives for lubricants
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C10M-135/00
C07C-149/00
출원번호
US-0920340
(1986-10-17)
우선권정보
FR-0015499 (1985-10-18)
발명자
/ 주소
Born Maurice (Nanterre FRX) Briquet Lucienne (Rueil-Malmaison FRX) Parc Guy (Rueil-Malmaison FRX) Paquer Daniel (Minerve FRX)
출원인 / 주소
Institut Francais du Petrole (Rueil-Malmaison FRX 03)
인용정보
피인용 횟수 :
3인용 특허 :
1
초록▼
The disclosed polysulfided olefin compositions can be used in particular as extreme-pressure additives for lubricants. They are prepared by a process comprising the steps of: (1) reacting sulfur monochloride and/or dichloride with at least one monoolefin having 2 to 5 carbon atoms (generally isobute
The disclosed polysulfided olefin compositions can be used in particular as extreme-pressure additives for lubricants. They are prepared by a process comprising the steps of: (1) reacting sulfur monochloride and/or dichloride with at least one monoolefin having 2 to 5 carbon atoms (generally isobutene) to form an “adduct”; (2) contacting said “adduct”jointly with an unsaturated monohalogenated hydrocarbon compound, in a proportion corresponding to a number of halogen gram-atoms from about 1 to 70% of the number of halogen gram-atoms of the assembly “monohalogenated hydrocarbon compound+adduct”, with a sulfur compound (e.g. alkaline sulfide, hydrogenosulfide or polysulfide) and, mostly, element sulfur, in a proportion of 0 to 7 gram-atoms per mole of sulfur compound, within an aqueous or hydroalcoholic medium; (3) heating the mixture and, after settling in 2 phases, separating the organic phase containing the polysulfided olefin, and (4) optionally treating the obtained product with a base. The obtained polysulfided olefins, depending on their sulfur content, may be used as extreme-pressure additives in oil compositions for gears or for metal working.
대표청구항▼
A polysulfided olefin composition, obtained by a process comprising the steps of: (1) reacting at least one compound selected from sulfur monochloride and sulfur dichloride with at least one monoolefin having 2 to 5 carbon atoms, in a proportion of 1.5 to 2.5 mole of monoolefin per mole of at least
A polysulfided olefin composition, obtained by a process comprising the steps of: (1) reacting at least one compound selected from sulfur monochloride and sulfur dichloride with at least one monoolefin having 2 to 5 carbon atoms, in a proportion of 1.5 to 2.5 mole of monoolefin per mole of at least one of sulfur monochloride, sulfur didichloride, thus forming an addition product or “adduct”, (2) contacting said “adduct”and at least one unsaturated monohalogenated hydrocarbon compound, the proportion of said unsaturated monohalogenated hydrocarbon compound corresponding to 1-70% of halogen gram-atoms in proportion to the total number of halogen gram-atoms of the assembly formed by said “adduct”and said unsaturated monohalogenated hydrocarbon compound, with at least one sulfur compound selected from sulfides, halogenosulfides and polysulfides of alkali metals, ammonium or alkaline-earth metals, used in a proportion of about 0.4 to 0.8 mole per halogen gram-atom contained in the assembly formed by said “adduct”and said unsaturated monohalogenated hydrocarbon, and a proportion of element sulfur from 0 to 7 gram-atoms per mole of said sulfur compound, within a mixture consisting of water or a mixture of water with aliphatic monoalcohol, and (3) heating the resultant mixture and, after separating it in two phases, recovering the polysulfided olefin from the organic phase. A gear oil composition, comprising a major proportion of mineral or synthetic lubricating oil and, as an additive, from 0.5 to 7% by weight of at least one polysulfided olefin composition according to claim 1.
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이 특허에 인용된 특허 (1)
Born Maurice (Nanterre FRX) Parc Guy (Rueil Malmaison FRX) Briquet Lucienne (Rueil Malmaison FRX) Paquer Daniel (Vandoeuvre FRX), Method for the preparation of olefin polysulfides, the products obtained and their utilization as lubricant additives.
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