Waterborne shape memory polymer coatings

Patent metadata

Field	Value
Publication number	US-9982163-B2
Application number	US-201213645593-A
Country	US
Kind code	B2
Filing date	Oct 5, 2012
Priority date	Oct 5, 2012
Publication date	May 29, 2018
Grant date	May 29, 2018

Abstract

The present invention relates to shape memory polymers and waterborne coating materials and, more particularly, to waterborne shape memory polymer coatings.

First claim

What is claimed is:

1. A waterborne shape memory polymer comprising structural units repeating along a backbone in a linear sequence, wherein each structural unit comprises:
a switching segment comprising PCL diol;
a chargeable unit comprising N-methyldiethanolamine (NMDEA);
a cross-linkable unit comprising POSS diol, wherein said cross-linkable unit connects said switchable segment to said chargeable unit to form a single polymer chain, wherein:
the cross-linkable unit is positioned between the switching segment and the chargeable unit through an amido linkage of a difunctional amido monomer of the switching segment along the backbone in the linear sequence, indirectly connecting the switching segment and the chargeable unit, and
the waterborne shape memory polymer is dispersible in water; and 1,6-hexanediisocyanate (HDI); and

wherein the waterborne shape memory polymer has the following structure:

2. The waterborne shape memory polymer of claim 1 , wherein said waterborne shape memory polymer forms a semi-spherical particle with other waterborne shape memory polymers when dispersed in water, wherein said hydrophobic switching segment of each of said other waterborne shape memory polymers are surrounded by said chargeable units of each of said other waterborne shape memory polymers.

3. A waterborne shape memory polymer coating and substrate complex comprising the waterborne shape memory polymer of claim 1 and a substrate selected from a group consisting of natural fabrics, synthetic fabrics, and monofilament wires.

4. The waterborne shape memory polymer of claim 1 , wherein the switching segment is uncharged.

5. The waterborne shape memory polymer of claim 3 , wherein the switching segment is uncharged.

Assignees

• Univ Syracuse

Inventors

• Mather Patrick
• Ishida Kazuki
• Wilson Pamela

Classifications

• Y10T428/2933

  Coated or with bond, impregnation or core · CPC title

• D06M15/572

  Reaction products of isocyanates with polyesters or polyesteramides · CPC title

• D06M15/568

  Reaction products of isocyanates with polyethers · CPC title

• D06M15/507

  Polyesters · CPC title

• D06M15/00

  Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment (D06M10/00, D06M14/00 take precedence; {treatment with inorganic polyphosphates D06M11/72}) · CPC title