Wacker Chemie Ag

Yong-Hae Choi

DaeKyu Kang

Jong-Bok Kim

Sung Oh

Daekyu Kang

A vinyl acetate-ethylene copolymer emulsion and method of making the same. The vinyl acetate-ethylene copolymer emulsion is prepared by using a redox initiator. Where the redox initiator includes a salt of at least one metal selected from the group consisting of silver (Ag), platinum (Pt), copper (Cu), mercury (Hg), zinc (Zn), tin (Sn), lead (Pb), bismuth (Bi), cadmium (Cd) and chromium (Cr). The emulsion further includes an oligomer of a monocarboxylic acid selected from the group consisting of C-Caliphatic monocarboxylic acid and C-Caromatic monocarboxylic acid.

Vinyl acetate-ethylene copolymer emulsion and method for the production thereof

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.

Pre-swelled vinylacetate-ethylene based redispersible polymer powder composition and method for fabricating the same, asphalt composition comprising the same

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SEONGNAM-SI, South Korea

Yong-Hae Choi