Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1980-05-12
1981-09-29
Ziegler, J.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
260 18TN, 260 292TN, 260 292N, 525424, 528 45, 528 68, C08L 7706, C08L 9100
Patent
active
042922178
ABSTRACT:
Water based coatings have been developed comprising water containing dispersed liquid droplets of water immiscible, hydroxy functional organic material, which are emulsified in the water, the water having dispersed therein an amine salt constituted by a salt of a solubilizing acid with a polyamide having a plurality of terminal primary amine groups. About one of the primary amine groups in the polyamide is unsubstituted, and at least about 70% of the isocyanate-reactive amino hydrogen atoms in the polyamide other than in the unsubstituted primary amine group are reacted with one isocyanate group of an organic polyisocyanate, the remaining isocyanate groups of which are blocked by a volatile blocking agent. The blocked isocyanate groups are nonreactive at room temperature and the unblocked isocyanate groups are reactive with the hydroxy functionality of the organic hydroxy functional material at elevated temperature. These coatings can be applied by electrocoating or other more conventional application methods and are curable to hard, flexible, solvent resistant films suitable for use in primer and other coatings applications.
REFERENCES:
patent: 3020251 (1962-02-01), Russell
patent: 3523925 (1970-08-01), Kamal et al.
Huggett C. A.
Mobil Oil Corporation
Powers, Jr. J. F.
Trojnar E. J.
Ziegler J.
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