Claims
- 1. A method of inhibiting rust comprising applying to a substrate a rust inhibiting compound of the formula (1): ##STR3## wherein, R.sub.1 is a perfluoroalkyl group having one to six 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----N--NH--, --CH----N--N--, --CO.sub.2 --NH--CO--, --S--C(SH)----N` or a salt thereof.
- 2. A method of inhibiting rust comprising applying to a substrate sodium 3,4-bis(trifluoromethyl)benzenesulfonate.
- 3. A method of inhibiting rust comprising applying to a substrate calcium 3-pentafluoroethyl-6-hydroxybenzoate.
- 4. A method of inhibiting rust comprising applying to a substrate triethanol amine salt of p-tertiarynonafluorobutylbenzenesulfonate.
- 5. A method of inhibiting rust comprising applying to a substrate sodium p-trifluoromethylbenzenesulfonyl aminoacetate.
- 6. A method of inhibiting rust comprising applying to a substrate p-pentafluoroethylphenyl thioacetate.
- 7. The method of claim 1, wherien the compound is potassium m-trifluoromethylbenzotriazole salt.
- 8. The method of claim 1, wherein the compound is m-trifluoromethyl benzotriazole.
- 9. A method of inhibiting rust comprising applying to a substrate dicyclohexylamine p-trifluoromethylphenylsutfonate salt.
- 10. A method of inhibiting rust comprising applying to a substrate potassium m-tertiarynonafluorobutyl saccharine salt.
- 11. A method of inhibiting rust comprising applying to a substrate sodium p-trifluoromethylbenzoate.
Priority Claims (1)
Number |
Date |
Country |
Kind |
4-148837 |
May 1992 |
JPX |
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Parent Case Info
This is a division of application Ser. No. 08/317,778, filed Oct. 4, 1994, now U.S. Pat. No. 5,487,846, which is a continuation of Ser. No. 08/046,305, filed Apr. 15, 1993, now abandoned.
US Referenced Citations (7)
Foreign Referenced Citations (3)
Number |
Date |
Country |
3330223 |
Mar 1985 |
DEX |
59-133377 |
Jul 1984 |
JPX |
4-244054 |
Jan 1992 |
JPX |
Non-Patent Literature Citations (2)
Entry |
Chemical Abstract 79:115594 only JP 48026012 Aug. 3, 1969. |
Chemical Abstract 120:83840 only JP EP 569884 Nov. 18, 1993. |
Divisions (1)
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Number |
Date |
Country |
Parent |
317778 |
Oct 1994 |
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Continuations (1)
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Number |
Date |
Country |
Parent |
46305 |
Apr 1993 |
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