Polymeric foams having nanocellular morphology are formed from a polymeric material having structural units derived from 2-hydrocarbyl-3,3-bis(hydroxyphenyl)phthalimidine compound. The foams include a plurality of cells having an average diameter of less than 1 micron. Processes for forming the foams include melting a polymeric material having structural units derived from 2-hydrocarbyl-3,3-bis(hydroxyphenyl)phthalimidine compounds; diffusing a blowing agent into the polymeric material to form a mixture; nucleating bubbles in the mixture is at a sufficient temperature and pressure to enable the production of cells having an average diameter of less than 1 micron; stabilizing the cells; and forming the mixture into a desired shape.

Title
Polymeric Foams with Nanocellular Morphology and Methods for Making Them
Application Number
11/773529
Publication Number
20090130420
Application Date
July 5, 2007
Publication Date
May 21, 2009
Inventor
Anand Vaidyalingam
Santhosh Kumar Rajendran
Ravi Sriraman
Gautam Chatterjee
Chinniah Thiagarajan
Agent
Cantor Colburn
CT, US
Assignee
General Electric Company
NY, US
IPC
B32B 03/26
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