C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 5/10 (2006.01) C23F 11/14 (2006.01)
Patent
CA 2473430
The invention relates to aqueous coolants with corrosion-inhibiting properties for the wet circuit, in particular for the running-in period of internal combustion engines, after which the coolant is drained off (engine running-in fluids), which comprise at least one ammonium salt of a monophthalimide of general formula (I), in which R<sp>l</sp> and R<sp>2</sp> independently or together = H, a linear, branched cyclic or acyclic C<sb>1</sb>-C<sb>20</sb> alkyl group and A<sp>+</sp> = an ammonium cation.
La présente invention concerne des liquides de refroidissement aqueux permettant d'inhiber la corrosion de la chambre à vapeur, notamment destinés à la phase de rodage de moteurs à combustion interne, lesdits liquides de refroidissement étant évacués après rodage (liquides de rodage du moteur). Lesdits liquides contiennent au moins un sel d'ammonium de monoamides d'acide phtalique de formule générale (1), R<sp>l</sp> et R<sp>2</sp> pouvant être identiques ou différents et représentant de l'hydrogène ou un reste C<sb>1</sb>-C<sb>20</sb>-alkyl linéaire ou ramifié, cyclique ou acyclique, et A<sp>+</sp> représentant un cation ammonium.
Dambach Stefan
Meszaros Ladislaus
Rehberger Hubert
Wenderoth Bernd
Wulff Christian
Basf Aktiengesellschaft
Borden Ladner Gervais Llp
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