Shape memory polymers

Wilson, Thomas S.; Bearinger, Jane P.

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Title: Shape memory polymers

Abstract

New shape memory polymer compositions, methods for synthesizing new shape memory polymers, and apparatus comprising an actuator and a shape memory polymer wherein the shape memory polymer comprises at least a portion of the actuator. A shape memory polymer comprising a polymer composition which physically forms a network structure wherein the polymer composition has shape-memory behavior and can be formed into a permanent primary shape, re-formed into a stable secondary shape, and controllably actuated to recover the permanent primary shape. Polymers have optimal aliphatic network structures due to minimization of dangling chains by using monomers that are symmetrical and that have matching amine and hydroxl groups providing polymers and polymer foams with clarity, tight (narrow temperature range) single transitions, and high shape recovery and recovery force that are especially useful for implanting in the human body.

Inventors:: Wilson, Thomas S.; Bearinger, Jane P.

Issue Date:: 2022-09-27

Research Org.:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1925140

Patent Number(s):: 11453740

Application Number:: 16/725,327

Assignee:: Lawrence Livermore National Security, LLC (Livermore, CA)

Patent Classifications (CPCs):: A - HUMAN NECESSITIES A61 - MEDICAL OR VETERINARY SCIENCE A61B - DIAGNOSIS

B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES

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A - HUMAN NECESSITIES A61 - MEDICAL OR VETERINARY SCIENCE A61B - DIAGNOSIS
A61B17/3498 - {Valves therefor, e.g. flapper valves, slide valves
A61B2017/00867 - {shape memory effect
A61B2017/00871 - {polymeric}
A61B2017/2932 - {Transmission of forces to jaw members}

B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES
B82Y30/00 - Nanotechnology for materials or surface science, e.g. nanocomposites

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08G - MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
C08G18/08 - Processes
C08G18/3203 - {Polyhydroxy compounds}
C08G18/3221 - {hydroxylated esters of carboxylic acids other than higher fatty acids}
C08G18/3271 - {Hydroxyamines}
C08G18/3281 - {containing three hydroxy groups}
C08G18/3284 - {containing four hydroxy groups}
C08G18/3287 - {containing cycloaliphatic groups}
C08G18/3851 - {containing three nitrogen atoms in the ring}
C08G18/73 - acyclic
C08G2280/00 - Compositions for creating shape memory

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08J - WORKING-UP
C08J9/0085 - {Use of fibrous compounding ingredients

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08L - COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
C08L75/04 - Polyurethanes
C08L75/12 - from compounds containing nitrogen and active hydrogen, the nitrogen atom not being part of an isocyanate group
C08L75/14 - Polyurethanes having carbon-to-carbon unsaturated bonds

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DOE Contract Number:: AC52-07NA27344

Resource Type:: Patent

Resource Relation:: Patent File Date: 12/23/2019

Country of Publication:: United States

Language:: English

Subject:: 59 BASIC BIOLOGICAL SCIENCES; 77 NANOSCIENCE AND NANOTECHNOLOGY

Citation Formats


                    Wilson, Thomas S., and Bearinger, Jane P. Shape memory polymers.  United States: N. p., 2022. 
        Web.

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                    Wilson, Thomas S., & Bearinger, Jane P. Shape memory polymers.  United States.

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                    Wilson, Thomas S., and Bearinger, Jane P. Tue .  
        "Shape memory polymers".  United States.  https://www.osti.gov/servlets/purl/1925140.

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@article{osti_1925140,

  title        = {Shape memory polymers},

  author       = {Wilson, Thomas S. and Bearinger, Jane P.},

  abstractNote = {New shape memory polymer compositions, methods for synthesizing new shape memory polymers, and apparatus comprising an actuator and a shape memory polymer wherein the shape memory polymer comprises at least a portion of the actuator. A shape memory polymer comprising a polymer composition which physically forms a network structure wherein the polymer composition has shape-memory behavior and can be formed into a permanent primary shape, re-formed into a stable secondary shape, and controllably actuated to recover the permanent primary shape. Polymers have optimal aliphatic network structures due to minimization of dangling chains by using monomers that are symmetrical and that have matching amine and hydroxl groups providing polymers and polymer foams with clarity, tight (narrow temperature range) single transitions, and high shape recovery and recovery force that are especially useful for implanting in the human body.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2022},

  month        = {9}

}

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Works referenced in this record:

Hydrophilic polyurethane foams
patent, March 2000

Bleys, Gerhard Jozef; Gerber, Dirk; Grymonprez, Henk
US Patent Document 6,034,149
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Process for the production of matte, non-blocking, thin-walled molded articles from linear thermoplastic polyurethane elasotomers containing polyadducts and their use
patent, April 1987

Niederdellmann, Georg; Goyert, Wilhelm; Quiring, Bernd
US Patent Document 4,656,199
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Articles with polyurethane resin having memory shape characteristics and method of utilizing same
patent, February 1991

Hourai, Kouzi; Kobayashi, Yoshio; Ikegami, Katsuhiko
US Patent Document 4,990,545
URL: https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/4990545