Corrosion inhibitor for magnetic media

Details Corrosion inhibitor for magnetic media Corrosion inhibitor for magnetic media

1998-08-11

1999-06-29

Green, Anthony

Compositions: coating or plastic

Coating or plastic compositions

Corrosion inhibiting coating composition

252 6255, 427127, 427130, 427131, 427548, 428447, 428450, 428689, 428692, 428694R, 428694TF, 428694TP, 428900, 428928, C23F 1100, H01F 1016, H01F 1012

Patent

active

059163550

ABSTRACT:
A surface treatment is provided for magnetic media, in particular metal evaporated magnetic tape, that prevents or reduces corrosion in the media. A corrosion inhibitor and a coupling agent are added to a carrier, such as ethanol, and applied directly to the magnetic media. The corrosion inhibitor is advantageously a derivative of sarcosine, preferably N-methyl-N-(1-oxo-9-octadeconyl)glycine, and is added in an amount up to about 0.5 wt. %. The coupling agent is advantageously an organofunctional silane, preferably 3-glycidoxypropyltrimethoxysilane, and is added in an amount up to about 0.3 wt. %. This formula is particularly suitable for preventing corrosion in cobalt evaporated magnetic tape.

REFERENCES:
patent: 4153754 (1979-05-01), Huisman
patent: 4719121 (1988-01-01), Kimball
Sony Magnetic Products Group, MPG Technical Report, vol. 1, "Hi8 Metal-E' Metal-Evaporated Tape", Aug. 1989, Tokyo, Japan.
Chemical Abstract No. 98:112274, abstract of Japanese Patent Specification No. 57-174176, Oct. 1982.
WPIDS Abstract No. 95-164625, abstract of Japanese Patent Specification No. 07-085460, Mar. 1995.
WPIDS Abstract No. 85-306249, abstract of Japanese Patent Specification No. 60-211613, Oct. 1985.
WPIDS Abstract No. 85-119299, abstract of Japanese Patent Specification No. 60-057525, Apr. 1985.

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