Corrosion Protection Provided by M-369 in Mobil Synthetic Lubricating Grease

3 Iso Logos 11 2018 - Cortec Corporation

Background: Customer needs the corrosion inhibitor for the synthetic lubricating grease.

Purpose: To evaluate the performance of M-369 in Mobil lubricating grease.

Method: ASTM B 117 (Salt Spray Cabinet)

Materials: M-369

Mobil -Synthetic Lubricating Grease, manufactured by Mobil Oil Corporation.

Panels (Carbon Steel SAE 1010),

Methanol, lab. grade.

Procedure: M-369 was added to the Mobil lubricating grease at concentration level 5% by weight.

Panels were cleaned with methanol and air — dried. Grease was applied at the panels with the film thickness 3 — 5mil. After air-drying overnight, panels were placed in salt spray cabinet and inspected for any sign of corrosion daily.

Results:Table 1.

Material Time before corrosion, days % of corroded surface after 7days.
Mobil Grease + 5% M-369 >7 <1
Mobil Grease 3 >5

(See attached photos)

Conclusion: M-369 significantly improves anticorrosion protection provided by Mobil grease when added to it at concentration level of 5% by weight.

Project #03-020-1325

To: Tim Rayburn, Alpine Summit

For: Alan Petaja, Exxon Mobil

From: Alla Furman

Cc: Boris Miksic

Anna Vignetti

Art Ahlbrecht

Rita Kharshan

Ashish Gandhi

Vanessa Schultz

Bob Boyle