US 12,384,103 B2
Method for the manufacture of a spatially varying dielectric material, articles made by the method, and uses thereof
Trevor Polidore, Scottsdale, AZ (US); Sergio Clavijo, Phoenix, AZ (US); and Dirk Baars, Phoenix, AZ (US)
Assigned to ROGERS CORPORATION, Chandler, AZ (US)
Filed by ROGERS CORPORATION, Chandler, AZ (US)
Filed on Mar. 29, 2023, as Appl. No. 18/127,745.
Application 17/855,999 is a division of application No. 16/657,054, filed on Oct. 18, 2019, granted, now 11,407,169.
Application 18/127,745 is a continuation of application No. 17/855,999, filed on Jul. 1, 2022.
Claims priority of provisional application 62/747,497, filed on Oct. 18, 2018.
Prior Publication US 2023/0226751 A1, Jul. 20, 2023
Int. Cl. B29C 64/124 (2017.01); B29L 31/34 (2006.01); B33Y 10/00 (2015.01); B33Y 40/20 (2020.01); B33Y 70/10 (2020.01); B33Y 80/00 (2015.01)
CPC B29C 64/124 (2017.08) [B29L 2031/34 (2013.01); B33Y 10/00 (2014.12); B33Y 40/20 (2020.01); B33Y 70/10 (2020.01); B33Y 80/00 (2014.12)] 18 Claims
OG exemplary drawing
 
1. A stereolithography method of manufacture of a polymer structure having a spatially gradient dielectric constant, the method comprising:
providing a volume of a liquid, radiation-curable composition;
irradiating a portion of the liquid, radiation-curable composition with activating radiation in a pattern to form a layer of the polymer structure;
contacting the layer with the liquid, radiation-curable composition;
irradiating the liquid, radiation-curable composition with activating radiation in a pattern to form a second layer on the first layer; and
repeating the contacting and irradiating to form the polymer structure,
wherein the polymer structure comprises an open-lattice cell structure comprising a plurality of unit cells wherein each unit cell is integrally connected with an adjacent unit cell,
wherein density of the polymer structure is varied to provide the spatially gradient dielectric constant, and
wherein the spatially gradient dielectric constant has endpoints in a range from 20 to greater than 1, measured at 10 GHz, 23° C., and 50% relative humidity.