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Title: Nanocellular thermoplastic foam and process for making the same

Abstract

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.

Inventors:
; ; ;
Publication Date:
Research Org.:
Dow Global Technologies LLC, Midland, MI (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1221982
Patent Number(s):
9,145,477
Application Number:
14/421,851
Assignee:
Dow Global Technologies LLC (Midland, MI)
DOE Contract Number:  
EE0003916
Resource Type:
Patent
Resource Relation:
Patent File Date: 2013 Sep 13
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Zhu, Lingbo, Costeux, Stephane, Patankar, Kshitish A., and Moore, Jonathan D. Nanocellular thermoplastic foam and process for making the same. United States: N. p., 2015. Web.
Zhu, Lingbo, Costeux, Stephane, Patankar, Kshitish A., & Moore, Jonathan D. Nanocellular thermoplastic foam and process for making the same. United States.
Zhu, Lingbo, Costeux, Stephane, Patankar, Kshitish A., and Moore, Jonathan D. 2015. "Nanocellular thermoplastic foam and process for making the same". United States. https://www.osti.gov/servlets/purl/1221982.
@article{osti_1221982,
title = {Nanocellular thermoplastic foam and process for making the same},
author = {Zhu, Lingbo and Costeux, Stephane and Patankar, Kshitish A. and Moore, Jonathan D.},
abstractNote = {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.},
doi = {},
url = {https://www.osti.gov/biblio/1221982}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {9}
}

Works referenced in this record:

Determination of mesopore size of aerogels from thermal conductivity measurements
journal, March 2002


A process for making microcellular thermoplastic parts
journal, October 1990


Two-step micro cellular foaming of amorphous polymers in supercritical CO2
journal, May 2011


The nucleation of microcellular thermoplastic foam with additives: Part II: Experimental results and discussion
journal, April 1987