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(19)

RU

(11)

2 662 179

(13)

C2

(51)

IPC

C23C22/07(2006-01-01)

C23C22/34(2006-01-01)

C23C22/36(2006-01-01)

(21) (22)

Application

2016137422, 2015-02-19

(24)

Start date

2015-02-19

(22)

Actual filing date

2015-02-19

(45)

Published

2018-07-24

(72)

Inventor

Silvernejl, Natan Dzh.Kolkan, AdamOkerberg, Brajan S.Lingenfelter, Tor G.Din, Roj E.

(73)

Holder

Ppg Indastriz Ogajo, Ink.

PRELIMINARY PROCESSING OF MAGNESIUM SUBSTRATES Russian patent published in 2018 - IPC C23C22/07 C23C22/34 C23C22/36 

Abstract RU 2662179 C2

FIELD: chemistry.

SUBSTANCE: invention relates to the pre-treatment of magnesium substrates before a protective and/or decorative coating is applied to their surface. Aqueous composition for the treatment of magnesium substrates, comprising a) compound containing at least four phosphoric acid groups, (b) soluble salt of an alkaline earth element, (c) source of fluoride. In this case, the composition can contain (a) phytic acid or a salt thereof, (b) calcium salt, and the fluoride source can be selected from the group consisting of HF, NH4F and NH4HF2.

EFFECT: suppression of oxidation of the surface of magnesium substrates and stimulation of adhesion.

12 cl, 1 tbl, 7 ex

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RU 2 662 179 C2

Authors

Silvernejl, Natan Dzh.

Kolkan, Adam

Okerberg, Brajan S.

Lingenfelter, Tor G.

Din, Roj E.

Dates

2018-07-24—Published

2015-02-19—Filed

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