C - Chemistry – Metallurgy – 23 – F
Patent
C - Chemistry, Metallurgy
23
F
C23F 11/12 (2006.01) C09K 5/00 (2006.01) C09K 5/20 (2006.01)
Patent
CA 2051609
CORROSION-INHIBITED ANTIFREEZE/COOLANTS COMPOSITION (D#80,929-F) ABSTRACT OF THE DISCLOSURE A corrosion-inhibited antifreeze composition is disclosed. Specifically, the antifreeze composition comprises a major portion of a liquid alcohol freezing point depressant and a minor portion of at least one acid having the structure: Image , where R1, R2 and R3 are the same or different C1 to C10 alkyls or where one of R1, R2 and R3 is H, and the other two R groups are C1 to C10 alkyls. The above described acid is employed as a corrosion inhibitor. Other conventional corrosion inhibitors may be employed in conjunction with the neoacids. In another embodiment, the present invention relates to a process for inhibiting the general pitting, crevice and deposit attack corrosion of metals present in the cooling system of an internal combustion engine which comprises intimately contacting the metal surface to be inhibited against corrosion with the antifreeze composition described above. Most preferably, the target substrates are aluminum and high lead solder. 80929pa.dgv
Burns Jeffrey M.
Mccoy David R.
Smart & Biggar
Texaco Development Corporation
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