Cobalt-and nickel-free sealant compositions

Details Cobalt-and nickel-free sealant compositions Cobalt-and nickel-free sealant compositions

C - Chemistry, Metallurgy

09

K

C09K 3/10 (2006.01) C23C 22/05 (2006.01) C25D 11/24 (2006.01)

Patent

CA 2208157

Aluminium oxide sealant compositions, concentrates, and processes employing the same are described which comprise a combination of certain sulphonated aromatic compounds and condensates of aldehydes and certain other sulphonated aromatic compounds. Unexpected improvements in seal quality are obtained using the compositions of the invention, and in the substantial absence of smut formation.

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