Topcoated phosphated bolts, nuts and washers

Details Topcoated phosphated bolts, nuts and washers Topcoated phosphated bolts, nuts and washers

1976-08-27

1978-02-14

Lesmes, George F.

Stock material or miscellaneous articles

Composite

Of polyisocyanurate

85 1C, 106 14, 148 615R, 148 616, 428457, 428461, 428469, 428411, 428543, B32B 1504, F16B 2700

Patent

active

040740110

ABSTRACT:
A bolt, nut and washer is first coated with an under-coating consisting of metal phosphate, and is then coated with a second or top coating consisting of a chromium compound and one or more of a metal salt of higher fatty acid, polyolefin and polyethylene tetrafluoride dissolved or dispersed in a vehicle. The composite coating improves the corrosion resisting and lubricating properties of bolts, nuts and washers coated therewith, and also serves as an excellent base for paints.

REFERENCES:
patent: 2662836 (1953-12-01), Montgomery et al.
patent: 3079288 (1963-02-01), Schneider
patent: 3565699 (1971-02-01), Plaxton
patent: 3819425 (1974-06-01), DeRidder et al.
patent: 3960610 (1976-06-01), Steinbrecher et al.

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