US 11,787,916 B2
Highly branched non-crosslinked aerogel, methods of making, and uses thereof
Garrett Poe, Spencer, MA (US); Alan Sakaguchi, Spencer, MA (US); and Nicole Lambdin, Spencer, MA (US)
Assigned to BLUESHIFT MATERIALS, INC., Spencer, MA (US)
Filed by BLUESHIFT MATERIALS, INC., Spencer, MA (US)
Filed on Apr. 8, 2021, as Appl. No. 17/225,600.
Application 17/225,600 is a continuation of application No. 16/296,497, filed on Mar. 8, 2019, granted, now 11,008,432.
Application 16/296,497 is a continuation of application No. 15/297,276, filed on Oct. 19, 2016, granted, now 10,287,411, issued on May 14, 2019.
Claims priority of provisional application 62/408,862, filed on Oct. 17, 2016.
Claims priority of provisional application 62/337,947, filed on May 18, 2016.
Claims priority of provisional application 62/262,055, filed on Dec. 2, 2015.
Claims priority of provisional application 62/248,763, filed on Oct. 30, 2015.
Prior Publication US 2021/0388170 A1, Dec. 16, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. B01D 69/12 (2006.01); B01D 71/64 (2006.01); C08G 73/10 (2006.01); C08J 9/26 (2006.01); C08J 9/28 (2006.01)
CPC C08J 9/286 (2013.01) [B01D 69/125 (2013.01); B01D 71/64 (2013.01); C08G 73/10 (2013.01); C08G 73/1046 (2013.01); C08J 9/26 (2013.01); C08J 9/28 (2013.01); B01D 2323/30 (2013.01); C08J 2201/048 (2013.01); C08J 2201/0482 (2013.01); C08J 2201/0502 (2013.01); C08J 2205/026 (2013.01); C08J 2205/05 (2013.01); C08J 2300/202 (2013.01); C08J 2379/08 (2013.01)] 25 Claims
 
1. A porous aerogel material comprising:
(a) an open-cell structure; and
(b) a branched polymer matrix comprising polyimide polymer chains, wherein the matrix contains less than 5% by weight of crosslinked polymers,
wherein the branched polymer matrix has a degree of branching of at least 0.5 branches per polyimide polymer chain, and
wherein the porous aerogel material is radio frequency (RF) transparent.