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2 203 930

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C1

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IPC

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Application

2001129268/04, 2001-10-30

(24)

Start date

2001-10-30

(22)

Actual filing date

2001-10-30

(45)

Published

2003-05-10

(72)

Inventor

Byrikhina N.N.Aksenov V.I.Ivannikov V.V.Tokareva T.I.Kolokol'Nikov A.S.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Zavod Sinteticheskogo Kauchuka"

METHOD OF PREPARING SUCCINIMIDE ADDITIVES Russian patent published in 2003 - IPC

Abstract RU 2203930 C1

FIELD: lubricants. SUBSTANCE: isobutylene/alpha- methylstyrene copolymer containing between o.1 and 300 wt % alpha-methylstyrene and having molecular weight from 500 to 3000 is brought into reaction with maleic anhydride and polyalkylene-polyamine. Advantageously, tetraetjylene- penaamine is used at molar ratio to isobutylene/alpha-methylstyrene copolymer between 1:1 and 3: 1. EFFECT: reduced amount of tare products in additive and improved antioxidant properties thereof. 2 cl, 4 ex

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RU 2 203 930 C1

Authors

Byrikhina N.N.

Aksenov V.I.

Ivannikov V.V.

Tokareva T.I.

Kolokol'Nikov A.S.

Dates

2003-05-10—Published

2001-10-30—Filed

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