Low-voc emulsion polymer coating compositions

Details Low-voc emulsion polymer coating compositions Low-voc emulsion polymer coating compositions

C - Chemistry, Metallurgy

09

D

C09D 133/06 (2006.01)

Patent

CA 2559261

An aqueous latex coating composition and method of making an aqueous latex coating composition that comprises at least one oligomeric ethylene glycol derivative having the structure RO-(CH2-CH2-O-)n-H, at least one latex polymer, and water, wherein R is H or C1-C4 alkyl and preferably H, and n is from 3 to 9, preferably from 3 to 8, and more preferably from 3 to 6. The oligomeric ethylene glycol derivative functions as both a coalescing solvent and freeze-thaw stabilizer without contributing to the VOC content of the composition.

Composition aqueuse de revêtement de latex et procédé de fabrication d'une composition aqueuse de revêtement de latex qui comprend au moins un dérivé d'éthylène glycol oligomère ayant la structure RO-(CH<SUB>2</SUB>-CH<SUB>2</SUB>-O-)<SUB>n</SUB>-H, au moins un polymère latex, et de l'eau, où R est l'hydrogène ou un groupe alkyle en C<SUB>1</SUB> à C<SUB>4</SUB>, et de préférence l'hydrogène, et n vaut de 3 à 9, de préférence de 3 à 8, et de façon plus préférée de 3 à 6. Le dérivé d'éthylène glycol oligomère fonctionne à la fois comme un solvant coalescent et comme un stabilisateur au gel-dégel sans contribuer à la teneur en COV de la composition.

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