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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:
; ; ;
Issue 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. Tue . "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 = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {9}
}

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Works referenced in this record:

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A process for making microcellular thermoplastic parts
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The nucleation of microcellular thermoplastic foam with additives: Part II: Experimental results and discussion
journal, April 1987