Amine-free and surfactant-free electrodeposition of polyesters,

Details Amine-free and surfactant-free electrodeposition of polyesters, Amine-free and surfactant-free electrodeposition of polyesters,

1982-02-19

1985-08-06

Michl, Paul R.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

524361, 524364, 524901, C08K 507

Patent

active

045334480

ABSTRACT:
Disclosed is an electrodepositable emulsion which comprises a soluble un-ionized polymer containing an amic acid or amide linking group, a non-electrolyzable organic solvent for the polymer and a non-electrolyzable organic non-solvent for the polymer. The weight ratio of the solvent to the non-solvent is about 0.1 to about 0.5 and the polymer is about 0.4 to about 5% by weight of the weight of the solvent. No amine or surface active agent is used. A workpiece is coated with the polymer by placing it into the emulsion about one-half to about two inches away from the cathode. Constant dc voltage is applied between the cathode and the workpiece until a coating of a desired thickness has been deposited on the workpiece. The workpiece is then removed, dried, and cured.

REFERENCES:
patent: 3943065 (1976-03-01), Phillips
patent: 4053444 (1977-10-01), Phillips
patent: 4229339 (1980-10-01), Bentley
patent: 4299752 (1981-10-01), Armour

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