Water-based coatings with reduced solvent or water popping and s

Details Water-based coatings with reduced solvent or water popping and s Water-based coatings with reduced solvent or water popping and s

1975-10-01

1977-12-27

Welsh, M. J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 294UA, 260 296NR, 260 296TA, 260 296E, C08L 3302

Patent

active

040654168

ABSTRACT:
This invention relates to a water-based coating composition in which solvent or water popping and sagging are eliminated or substantially reduced. The composition comprises a thermosetting, film-forming organic binder dispersed in an aqueous medium containing from 60 to 100 parts by weight of water and from 0 to 40 parts by weight of a volatile organic solvent. The organic binder is formulated from (a) an acid-containing interpolymer adapted to be dissolved or dispersed in water with the aid of a base and (b) a water-soluble or water-dispersible polyether polyol or polyester polyol having a molecular weight of at least 300. The interpolymer consists essentially of the interpolymerization product of an N-alkoxyalkyl-substituted amide, an alpha, beta-ethylenically unsaturated carboxylic acid, and at least one other monomer containing a ##STR1## In addition to the elimination of, or substantial reduction in solvent or water popping and sagging of the composition, films formed from the compositions exhibit good properties, such as hardness, water resistance, salt spray resistance and stain resistance.

REFERENCES:
patent: 3079434 (1963-02-01), Christenson et al.
patent: 3085085 (1963-04-01), Wismer et al.
patent: 3288740 (1966-11-01), Maeder et al.
patent: 3652478 (1972-03-01), Ishii et al.
patent: 3860549 (1975-01-01), Sekmakas
patent: 3959202 (1976-05-01), Blank

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