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US 8,475,878 B2Granted
Polyolefin dispersion technology used for porous substrates
AssigneeDow Global Technologies LLC
InventorsGert Johannes Claasen, Miguel Alberto Prieto, Martin Pavlik
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Abstract
A method of forming an article that includes applying an aqueous dispersion to a porous substrate, wherein the aqueous dispersion includes a thermoplastic polymer, a dispersing agent, and water. The method includes removing at least a portion of the water, to result in an article formed that is breathable.
Claims10
A method of forming an article comprising:
- applying an aqueous dispersion to a porous substrate, wherein the aqueous dispersion comprises
- a thermoplastic polymer,
- a dispersing agent,
- a neutralizing agent;
- and
- water;
- and
- selecting a desired Moisture Vapor Transmission Rate (MVTR) of the article and removing at least a portion of the water employing a drying process comprising exposing the dispersion-coated porous substrate to one or more temperatures for times sufficient to achieve the selected MVTR;
- wherein the article formed is breathable and has a MVTR of at least about 300 g/m2 per 24 hours measured using ASTM Standard E96-80, upright cup method.
6 more elements
Dependencies are inferred from the claim text.