Cationic microgels and their use in electrodeposition

Details Cationic microgels and their use in electrodeposition Cationic microgels and their use in electrodeposition

1990-06-25

1992-03-17

Niebling, John

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

523403, C25D 1306

Patent

active

050965565

ABSTRACT:
A cationic microgel dispersion and the use of the dispersion in the method of cationic electrodeposition is disclosed. The dispersion is prepared by a process comprising dispersing in aqueous medium a mixture of a cationic polyepoxide-amine reaction product and a polyepoxide crosslinking agent and heating the mixture to a temperature sufficient to crosslink the mixture to form said cationic microgel dispersion. The dispersion can be formulated with ungelled cationic resins to form an aqueous resin dispersion which is suitable for use in the process of cationic electrodeposition providing for improved edge coverage and crater control.

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patent: 4433078 (1984-02-01), Kersten
patent: 4560714 (1985-12-01), Gajria
patent: 4785068 (1988-11-01), Tominaga et al.
patent: 4788246 (1988-11-01), Tsuchiya et al.
patent: 4869796 (1989-09-01), Kanda et al.
Lin, K. F., "Formation of Secondary Microgels in Epoxy Network", Polymeric Materials: Science and Engineering, (1989), vol. 61, pp. 830-834.

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