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Title: Post polymerization cure shape memory polymers

Patent ·
OSTI ID:1338931
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This invention relates to chemical polymer compositions, methods of synthesis, and fabrication methods for devices regarding polymers capable of displaying shape memory behavior (SMPs) and which can first be polymerized to a linear or branched polymeric structure, having thermoplastic properties, subsequently processed into a device through processes typical of polymer melts, solutions, and dispersions and then crossed linked to a shape memory thermoset polymer retaining the processed shape.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC52-07NA27344
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA)
Patent Number(s):
9,540,481
Application Number:
13/892,719
OSTI ID:
1338931
Resource Relation:
Patent File Date: 2013 May 13
Country of Publication:
United States
Language:
English

References (16)

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Crosslinkable polymer composition, molded article therefrom, process for the preparation thereof, crosslinked nonwoven cloth, and process for the preparation thereof patent February 2000
Irradiation conversion of thermoplastic to thermoset polymers patent July 2003
Polyurethane elastomer article with “shape memory” and medical devices therefrom patent December 2003
Modification of thermoplastic polymers patent May 2009
Post polymerization cure shape memory polymers patent November 2014
Method of Preparing Shape Memory Materials Starting from Standard Thermoplastic Polymers patent-application January 2009
Shape Memory Tubular Stent with Grooves patent-application April 2010
Post-polymerization crosslinked polyurethane shape memory polymers journal February 2011
Shape memory effect of ethylene-vinyl acetate copolymers journal February 1999
Photocurable biodegradable poly(ɛ-caprolactone)/poly(ethylene glycol) multiblock copolymers showing shape-memory properties journal October 2005
Synthesis and characterization of photocrosslinked poly(ε-caprolactone)s showing shape-memory properties journal May 2009
Synthesis and properties of photocurable biodegradable multiblock copolymers based on poly(ε-caprolactone) and poly(L-lactide) segments journal January 2005
Shape memory polymers based on uniform aliphatic urethane networks journal January 2007
Synthesis and shape memory effects of Si–O–Si cross-linked hybrid polyurethanes journal January 2006

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