EP0022999B1 - Agent anticorrosif pour l'aluminium et les alliages d'aluminium - Google Patents

Agent anticorrosif pour l'aluminium et les alliages d'aluminium Download PDF

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Publication number
EP0022999B1
EP0022999B1 EP80104040A EP80104040A EP0022999B1 EP 0022999 B1 EP0022999 B1 EP 0022999B1 EP 80104040 A EP80104040 A EP 80104040A EP 80104040 A EP80104040 A EP 80104040A EP 0022999 B1 EP0022999 B1 EP 0022999B1
Authority
EP
European Patent Office
Prior art keywords
weight
component
aluminium
corrosion
alloys
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP80104040A
Other languages
German (de)
English (en)
Other versions
EP0022999A1 (fr
Inventor
Rainer Dr. Helwerth
Horst Lorke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoechst AG
Original Assignee
Hoechst AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hoechst AG filed Critical Hoechst AG
Publication of EP0022999A1 publication Critical patent/EP0022999A1/fr
Application granted granted Critical
Publication of EP0022999B1 publication Critical patent/EP0022999B1/fr
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
    • C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors

Definitions

  • Component A of the anticorrosive agent according to the invention essentially consists of compounds of the formula in which R is a saturated aliphatic or cyclic hydrocarbon radical or an alkylaryl group with a total of 12-24, preferably 13-16 carbon atoms, R i is hydrogen or CH 3 , R 2 is hydrogen, C 1 -C 3 -alkyl or -hydroxyalkyl, X is an integer from 0 to 9, Y means an equivalent of an alkaline earth metal or zinc cation.
  • a paraffinic hydrocarbon with approximately the following composition can be considered as component B:
  • Component C contains the amine salt of an organic acid consisting, for example, of caprylamine, octylamine, dibutylamine or isodecylamine and caproic acid, caprylic acid and 2-ethylhexane carboxylic acid or isononanoic acid.
  • the equivalence ratio of amine to acid can be between 70:30 to 30:70.
  • Component D is, for example, the reaction product of nonyl or tributylphenol with 2-4 moles of ethylene oxide.
  • Component E is to be understood as a solvent which consists of a linear or branched C 4 -C 8 aliphatic alcohol.
  • anti-corrosion agents are applied by simply spraying them onto the metal parts to be treated.
  • the respective amounts for components A to E are within the The limits specified are chosen so that the total amount for the anti-corrosion agent according to the invention is 100%.
  • the advantageous anticorrosive properties of the anticorrosive agents according to the invention can be seen in the test tests described below.
  • the tests essentially consist of spraying dry, freshly pickled aluminum sheets with the respective corrosion protection agents and observing them for corrosion under the conditions of the Kesternich test (DIN 50 017) for up to 4 weeks.
  • the tendency to corrode was also tested on aluminum sheets which, after being sprayed with the anticorrosive agent, were subjected to a tempering anneal of 180 ° C. for 4 hours.
  • the scores 0-4 are based on the following scheme:
  • the anti-corrosion agents 1 and 2 are according to the invention and the agents 3-5 have been used for this purpose.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Claims (2)

1. Inhibiteur de corrosion pour l'aluminium et ses alliages, constitué:
A) de 15 à 50% en poids d'un produit obtenu par réaction de produits de sulfochloration d'hydrocarbures aliphatiques, alkylaromatiques ou cycloaliphatiques en C12-C24 avec l'ammoniac ou avec une alkyl-amine ou une hydroxyalkylamine en C1-C3, puis réaction avec un acide halogéno-carboxylique en C2-C11 et transformation en un sel de métal alcalino-terreux ou en un sel de zinc;
B) d'au moins 40% en poids d'un hydrocarbure paraffinique ayant une viscosité de 3 à 5° C à 20° C, dont la teneur en paraffines en C13-C16 est de 50 à 60%, la teneur en naphtènes de 50 à 40% et la teneur en hydrocarbures aromatiques de 0 à 1%;
C) de 1 à 4% en poids d'un sel dérivant d'une alkylamine en C8-C10 et d'un acide carboxylique en C8-C10;
D) de 1 à 4% en poids d'un produit d'éthoxylation constitué de 1 mole d'un alkyl-phénol à alkyle en C8-C12 et de 2 à 10 moles d'oxyde d'éthylène; et
E) de 1 à 2% d'un alcool aliphatique en C4-C8.
2. Inhibiteur de corrosion selon la revendication 1, qui contient jusqu'à 50% en poids de la composante B, de 1 à 2% en poids de la composante C, de 1 à 2% en poids de la composante D et de 1 à 2% en poids de la composante E.
EP80104040A 1979-07-20 1980-07-12 Agent anticorrosif pour l'aluminium et les alliages d'aluminium Expired EP0022999B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792929413 DE2929413A1 (de) 1979-07-20 1979-07-20 Korrosionsschutzmittel fuer aluminium und aluminiumlegierungen
DE2929413 1979-07-20

Publications (2)

Publication Number Publication Date
EP0022999A1 EP0022999A1 (fr) 1981-01-28
EP0022999B1 true EP0022999B1 (fr) 1983-03-23

Family

ID=6076282

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80104040A Expired EP0022999B1 (fr) 1979-07-20 1980-07-12 Agent anticorrosif pour l'aluminium et les alliages d'aluminium

Country Status (4)

Country Link
US (1) US4323476A (fr)
EP (1) EP0022999B1 (fr)
JP (1) JPS5616679A (fr)
DE (2) DE2929413A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3035327A1 (de) * 1980-09-19 1982-05-06 Hoechst Ag, 6000 Frankfurt Kuehlfluessigkeit mit korrosions- und kavitationshemmenden zusaetzen
US4452157A (en) * 1982-04-19 1984-06-05 The Singer Company Basting stitch mechanism
US4970026A (en) * 1988-09-21 1990-11-13 Drew Chemical Corporation Corrosion inhibitor

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3632651A (en) * 1967-09-28 1972-01-04 Sumitomo Chemical Co Novel ultraviolet absorbers
BE722283A (fr) * 1967-10-14 1969-04-14
US3692675A (en) * 1970-11-04 1972-09-19 Dow Chemical Co Inhibitor to corrosive attack and method of use
DD117492A1 (fr) * 1973-09-19 1976-01-12
DE2614234C2 (de) * 1976-04-02 1982-05-27 Metallgesellschaft Ag, 6000 Frankfurt Behandlungsflüssigkeit zum Korrosionsschutz von Metalloberflächen und Konzentrat zu deren Herstellung
CH629540A5 (de) * 1977-09-19 1982-04-30 Hoechst Ag Wassermischbare korrosionsschutzmittel.
DD137124A1 (de) * 1978-03-01 1979-08-15 Friedrich Andreas Selbstentwaessernde korrosionsschutzmittel
US4192769A (en) * 1978-05-12 1980-03-11 The Lubrizol Corporation Rust inhibitor additive compositions, method of making, and aqueous fluids containing the same

Also Published As

Publication number Publication date
JPS5616679A (en) 1981-02-17
DE3062433D1 (en) 1983-04-28
DE2929413A1 (de) 1981-02-05
EP0022999A1 (fr) 1981-01-28
US4323476A (en) 1982-04-06

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