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Title: Nanocellular thermoplastic foam and process for making the same

Prepare a thermoplastic polymer foam having a porosity of 70% or more and at least one of: (i) an average cell size of 200 nanometers or less; and (ii) a nucleation density of at least 1.times.1015 effective nucleation sites per cubic centimeter of foamable polymer composition not including blowing agent using a foamable polymer composition containing a thermoplastic polymer selected from styrenic polymer and (meth)acrylic polymers, a blowing agent comprising at least 20 mole-percent carbon dioxide based on moles of blowing agent and an additive having a Total Hansen Solubility Parameter that differs from that of carbon dioxide by less than 2 and that is present at a concentration of 0.01 to 1.5 weight parts per hundred weight parts thermoplastic polymer.
Authors:
; ; ;
Publication Date:
OSTI Identifier:
1221982
Report Number(s):
9,145,477
14/421,851
DOE Contract Number:
EE0003916
Resource Type:
Patent
Resource Relation:
Patent File Date: 2013 Sep 13
Research Org:
Dow Global Technologies LLC, Midland, MI (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE