AQUEOUS DISPERSION OF MUTLISTAGE POLYMER PARTICLES
The present invention relates to a composition comprising an aqueous dispersion of multistage polymer particles with a first phase comprising structural units of a carboxylic acid monomer and a nonionic ethylenically unsaturated monomer; and a second phase with a calculated Tg of less than 50° C. an...
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Main Authors | , , , , , |
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Format | Patent |
Language | English Spanish |
Published |
20.01.2020
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Subjects | |
Online Access | Get full text |
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Summary: | The present invention relates to a composition comprising an aqueous dispersion of multistage polymer particles with a first phase comprising structural units of a carboxylic acid monomer and a nonionic ethylenically unsaturated monomer; and a second phase with a calculated Tg of less than 50° C. and comprising a mixture of polymers which together comprise structural units of styrene or methyl methacrylate or both; structural units of one or of n-butyl acrylate, 2-ethylhexyl acrylate, ethyl acrylate, or n-butyl methacrylate; and structural units of a carboxylic acid monomer. The composition is useful as an open time additive in coatings formulations.
La presente invención se refiere a una composición que comprende una dispersión acuosa de partículas de polímero de múltiples etapas con una primera fase que comprende unidades estructurales de un monómero de ácido carboxílico y un monómero no iónico etilénicamente insaturado; y una segunda fase con una Tg calculada de menos de 50°C y que comprende una mezcla de polímeros que, en conjunto, comprenden unidades estructurales de estireno o metacrilato de metilo o ambos; unidades estructurales de uno o más de acrilato de n-butilo acrilato de 2-etilhexilo, acrilato de etilo o metacrilato de n-butilo; y unidades estructurales de un monómero de ácido carboxílico. La composición es útil como aditivo de tiempo abierto en formulaciones de recubrimientos. |
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Bibliography: | Application Number: MX20190008484 |