Process for forming multilayer coating

Details Process for forming multilayer coating Process for forming multilayer coating

1980-08-12

1981-12-15

Silverberg, Sam

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525117, 525119, 426418, 426458, 426457, 4274071, 427409, 427410, 4273881, B05D 136

Patent

active

043059945

ABSTRACT:
In a process for forming a multilayer coated film which comprises coating a multilayer coat-forming paint on the surface of a substrate to form a multilayer coated film thereon, the improvement wherein prior to the coating, the surface of the substrate is treated with a solution containing at least one onium compound selected from compounds of formulae (I) and (II) below ##STR1## wherein Y represents a nitrogen, phosphorus or arsenic atom, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are identical or different and each represents a hydrogen atom or an organic group having not more than 8 carbon atoms, and X.sub..crclbar. represents an anion.

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