Pre-swelled vinylacetate-ethylene based redispersible polymer powder composition and method for fabricating the same, asphalt composition comprising the same
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United States of America
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Dec 10, 2024
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Dec 30, 2021
app pub date -
Jul 12, 2019
filing date -
Jul 12, 2019
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Abstract
A redispersible polymer powder composition includes at least one solvent selected from a process oil and an organic solvent, and a vinylacetate-ethylene (VAE)-based redispersible polymer powder pre-swelled by the solvent. The swelling ratio of the vinylacetate-ethylene (VAE)-based redispersible polymer powder exceeds 55%, measured by the equation swelling ratio (%)=[(B−A)/A]×100, where A is the initial mass of the vinylacetate-ethylene (VAE)-based redispersible polymer powder before adding the solvent, and B is the swelled mass of the vinylacetate-ethylene (VAE)-based redispersible polymer powder after adding the solvent and stirring at 300 rpm at room temperature (20° C.) for 30 minutes provided that the mixing ratio of the vinylacetate-ethylene (VAE)-based redispersible polymer powder and the solvent is 1:1 by weight.
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