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2 179 996

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IPC

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Application

2000129860/04, 2000-11-30

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Start date

2000-11-30

(22)

Actual filing date

2000-11-30

(45)

Published

2002-02-27

(72)

Inventor

Borshchevskij S.B.Pokrovskaja V.V.Seraja T.S.Medzhibovskij A.S.Gushchin A.I.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Nauchno-Issledovatel'Skij Institut Po Pererabotke Nefti"Nauchno-Proizvodstvennoe Predprijatie

METHOD OF PREPARING ADDITION AGENT FOR LUBRICATING OILS Russian patent published in 2002 - IPC

Abstract RU 2179996 C1

FIELD: petrochemistry. SUBSTANCE: addition agent is prepared by reacting C₈-C₁₈ alkylphenol with elemental sulfur at elevated temperature in the presence of basic type catalyst. Sulfured product is further treated with alkanethiol in which C₁₂-C₁₈ alkyl at temperatures from 100 to 170 C at alkylphenol to alkanethiol molar ratio of 1:0.02-0.5. Neutralization is then carried out by adding suspension of calcium oxide hydroxide to dihydric alcohol in product, and neutralization product is treated with carbon dioxide. Alkylphenol is reacted with elementally sulfur at temperatures from 140 to 180 C. EFFECT: improved detergent anticorrosive and antioxidizing properties of lubricating oils. 2 cl, 6 ex, 1 tbl

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RU 2 179 996 C1

Authors

Borshchevskij S.B.

Pokrovskaja V.V.

Seraja T.S.

Medzhibovskij A.S.

Gushchin A.I.

Dates

2002-02-27—Published

2000-11-30—Filed