Surface-coating binders and their use for electrocoating finishe

Details Surface-coating binders and their use for electrocoating finishe Surface-coating binders and their use for electrocoating finishe

1980-05-30

1982-01-12

Hamrock, William F.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

260 23TN, 260 292TN, 525327, 525329, 525332, 525336, 526302, 526304, 526305, 526307, 526310, 526312, C08L 6308, C25D 1306

Patent

active

043103987

ABSTRACT:
Surface-coating binders based on a copolymer which contains tertiary amino groups and blocked isocyanate groups and is water-soluble or water-dispersible as a result of being at least partially salified with an acid. The copolymer contains, as copolymerized units, an olefinically unsaturated compound which possesses a tertiary amino group, an N-(1-alkenyl)-isocyanate which is blocked with a CH-, OH- or NH-acidic blocking agent, and another olefinically unsaturated compound, with or without one or more copolymerizable olefinically unsaturated compounds which possess hydrogen atoms which are reactive toward isocyanate groups, and has a mean molecular weight of from 1,000 to 20,000. The novel surface-coating binders are used for the cathodic electrocoating of metallic articles.

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