Rust inhibitor

Details Rust inhibitor Rust inhibitor

1994-10-04

1996-01-30

Geist, Gary

Compositions

Preservative agents

Anti-corrosion

570127, 570128, 570145, 570183, 570185, 548211, 562 83, 562 84, 25238962, 252391, 252394, 252395, 252390, C23F 1100

Patent

active

054878462

ABSTRACT:
A general-purpose organic rust initiator which can effectively prevent corrosion of metals comprising a compound of formula (1): ##STR1## wherein R.sub.1 is a perfluoroalkyl group having 1 to 6 carbon atoms; R.sub.2 is a hydrogen atom or a group defined for R.sub.1 ; R.sub.4 is an acid group selected from --OH, --COOH, --SH, --SO.sub.2 OH, --PO(OH).sub.2, --SCH.sub.2 COOH, --SO.sub.2 NHCH.sub.2 COOH or a salt thereof; R.sub.3 is a hydrogen atom or a group defined for R.sub.4 ; or R.sub.3 and R.sub.4 together form an acid group selected from --N.dbd.N--NH--, --CH.dbd.N--N--, --SO.sub.2 --NH--CO--, --S--C(SH).dbd.N-- or a salt thereof.

REFERENCES:
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patent: 2678947 (1954-05-01), Jones
patent: 3751491 (1973-08-01), Houlihan
patent: 3843337 (1974-10-01), Korpics
patent: 4051168 (1977-09-01), Feiring
patent: 4278561 (1981-07-01), Yee
patent: 4278791 (1981-07-01), Botta et al.
patent: 4895991 (1990-01-01), Burton et al.
patent: 4968852 (1990-11-01), Kawai et al.
CA 72:37312.
CA 76:99570.

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