Process for applying a corrosion resistant two-coat system to st

Details Process for applying a corrosion resistant two-coat system to st Process for applying a corrosion resistant two-coat system to st

1980-12-08

1982-06-29

Silverberg, Sam

Stock material or miscellaneous articles

All metal or with adjacent metals

Having metal particles

427406, 427403, 428551, 428552, 428448, 428450, B22F 704

Patent

active

043372996

ABSTRACT:
A process is disclosed for applying a corrosion resistant system to structural steel, in which a zinc dust paint comprising 5-15% by weight of a binder and 85-95% by weight of a metallic zinc-based pigment component is applied to the steel as a first coat, and subsequently a coat of a composition comprising an aromatic/aliphatic polyhydroxyether and/or a saturated aromatic polyester resin having a number average molecular weight of at least 4000 and a pigment having a Mohs hardness of at least 2, the volume ratio of the binder to the pigment being in the range of 50:50 to 95:5. The thickness of the first coat is about 15-150 .mu.m and that of the second coat is about 15-150 .mu.m. The invention also relates to structural steel thus coated.

REFERENCES:
patent: 3849141 (1974-11-01), Palm
patent: 4157924 (1979-06-01), Elms
patent: 4186036 (1980-01-01), Elms
patent: 4229495 (1980-10-01), Takahashi

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