Dow Global Technolgoies LLC

Varioptic S.a.

The Dow Chemical Company

Parrot

Christopher M Weikart

Thomas H Kalantar

Stéphane Costeux

Hoang T Pham

Steven J Martin

Mathieu Maillard

Julien Legrand

Lingbo Zhu

Prepare a polymeric foam article having a thermoplastic polymer matrix defining multiple cells therein, wherein the polymeric foam article has the following characteristics: (a) the thermoplastic polymer matrix contains dispersed within it nano-sized nucleating additive particles that have at least two orthogonal dimensions that are less than 30 nanometers in length; (b) possesses at least one of the following two characteristics: (i) has an effective nucleation site density of at least 3&#xd7;10sites per cubic centimeter of pre-foamed material; and (ii) has an average cell size of 300 nanometers or less; and (c) has a porosity percentage of more than 50 percent by rapidly expanding at a foaming temperature a foamable polymer composition containing the nucleating additive and a blowing agent containing at least one of carbon dioxide, nitrogen and argon.

Nanoporous polymeric foam having high porosity

A dielectric coating is provided which has both a dielectric constant greater than 2.5 and a hydrophobic surface. The dielectric coating may be provided by plasma enhanced chemical vapor deposition (PECVD) of organosilane, organosiloxane, organosilazane, organometallic, and/or hydrocarbon precursors. Methods are also provided for altering the contact angle of a liquid in contact with the dielectric coating, e.g., for electrowetting applications.

Dielectric coatings for electrowetting applications

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Midland, MI, United States of America

Christopher M Weikart