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2 181 137

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IPC

(21) (22)

Application

2000125671/04, 2000-10-11

(24)

Start date

2000-10-11

(22)

Actual filing date

2000-10-11

(45)

Published

2002-04-10

(72)

Inventor

Kirichenko G.N.Kirichenko V.Ju.Gorelov Ju.S.Saetgareeva E.Ju.

(73)

Holder

Kirichenko Genriehtta NikolaevnaKirichenko Vladislav Jur'EvichGorelov Jurij SergeevichSaetgareeva Elena Jur'Evna

METHOD OF PREPARING SULFUR-CONTAINING ADDITIVES Russian patent published in 2002 - IPC

Abstract RU 2181137 C1

FIELD: fuel and lube oil technology. SUBSTANCE: method of preparing sulfur-containing additives showing improved antiscuffing and antiwear properties as well as high thermal-oxidation resistance, consists in interaction of olefin C16-C25-fraction or dicyclopentadiene with sulfur at 130-150 C for 6 h in presence of 0.5-5% catalyst, in particular zinc dialkyl dithiophosphate depicted by formula I: (I), wherein R denotes isopropyl or isobutyl group and R' n-dodecyl or isononyl group. Sulfur level in additive is increased by 10-11% when compared to known additives. EFFECT: increased working characteristics and avoided catalyst removal operation in preparation procedure.

Similar patents RU2181137C1

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RU 2 181 137 C1

Authors

Kirichenko G.N.

Kirichenko V.Ju.

Gorelov Ju.S.

Saetgareeva E.Ju.

Dates

2002-04-10—Published

2000-10-11—Filed