Polyhipes by interfacial step-growth polymerization

Patent metadata

Field	Value
Publication number	US-10851218-B2
Application number	US-201816231627-A
Country	US
Kind code	B2
Filing date	Dec 24, 2018
Priority date	Jun 26, 2016
Publication date	Dec 1, 2020
Grant date	Dec 1, 2020

Abstract

A polyHIPE-templated composition-of-matter afforded by interfacial polymerization, comprising a polymer of alternating residues of hydrophobic and hydrophilic monomers. The described composition-of-matter is characterized by an open-, quasi-closed- or a truly closed-cell microstructure, whereas the latter is capable of non-releasably or releasably encapsulating an organic or aqueous composition therein for extended periods of time, as well as various uses thereof.

First claim

What is claimed is:

1. A composition-of-matter comprising a polymer, said polymer comprises alternating residues of at least one hydrophilic monomer and at least one hydrophobic monomer, and having a microstructure that is templated by a polymerized high internal phase emulsion (HIPE).

2. The composition-of-matter of claim 1 , wherein said HIPE is a water-in-oil HIPE or an oil-in-water HIPE.

3. The composition-of-matter of claim 1 , wherein said HIPE is a water-in-oil HIPE and the composition-of-matter has a closed-cell microstructure and further comprising an aqueous composition encapsulated therein.

4. The composition-of-matter of claim 1 , wherein said HIPE is an oil-in-water HIPE and the composition-of-matter has a closed-cell microstructure and further comprising an organic composition encapsulated therein.

5. The composition-of-matter of claim 1 , wherein said hydrophilic monomer is selected from the group consisting of a polysaccharide, a polyphenol, a glycoprotein, a polypeptide, a flavonoid, a glucoside, an aminoglucoside, a lignin and any combination thereof.

6. The composition-of-matter of claim 1 , wherein said hydrophobic monomer is selected from the group consisting of a diisocyanate, a triisocyanate, a polyisocyanate, a diacylhalide, a triacylhalide, a polyacylhalide and any combination thereof.

7. The composition-of-matter of claim 1 , wherein said polymer is devoid of an emulsion stabilizer that is not a monomer.

8. The composition-of-matter of claim 1 , wherein said polymer further comprises an emulsion stabilizer.

9. A process of preparing the composition-of-matter of claim 1 , the process comprising:
providing an organic solution that comprises said at least one hydrophobic monomer;
providing an aqueous solution that comprises said at least one hydrophilic monomer;
mixing said organic solution with said aqueous solution under stirring to thereby obtaining a HIPE; and
allowing said HIPE to polymerize,
thereby obtaining the composition-of-matter.

10. The process of claim 9 , further comprising, subsequent to obtaining said HIPE, adding a polymerization catalyst to said HIPE.

11. The process of claim 9 , wherein said aqueous solution and/or said organic solution further comprises an emulsion stabilizer.

12. The process of claim 9 , wherein said HIPE is an oil-in-water HIPE, a concentration of said hydrophobic monomer ranges from 0.01 to 90 weight percent of the total weight of said HIPE, and a concentration of said hydrophilic monomer ranges from 0.01 to 40 weight percent of the total weight of said HIPE.

13. The process of claim 9 , wherein said HIPE is a water-in-oil HIPE, a concentration of said hydrophobic monomer ranges from 0.01 to 40 weight percent of the total weight of said HIPE, and a concentration of said hydrophilic monomer ranges from 0.01 to 90 weight percent of the total weight of said HIPE.

14. An article of manufacturing comprising the composition-of-matter of claim 1 .

15. The article of claim 14 , selected from the group consisting of a fire-retardant device, a chemical detector device, a fragrance carrier and releasing device, an adhesive carrier and releasing device, a cosmetic carrier and releasing device, an energy storage device, an absorptive device, an explosive device, an energy absorbing device, an insecticide carrier and releasing device, a herbicide carrier and releasing device, a drug delivery device, a coloration device, a cleaning device, a sealing device, an ignition device, an incendiary device, a coating device, an insulating device, an anti-corrosion device, a nutrition device, a toxin carrier and releasing device, a water-releasing device, a salt releasing device, an aqueous solution releasing device, a disinfectant releasing device, and a lubrication carrier and releasing device.

Assignees

• Technion Res & Dev Foundation

Inventors

• Silverstein Michael S
• Avraham Liraz

Classifications

• C08G18/4266

  prepared from hydroxycarboxylic acids and/or lactones · CPC title

• C08G18/24

  of tin · CPC title

• C08G2101/00

  Manufacture of cellular products · CPC title

• C08G18/73

  acyclic · CPC title

• C08J2205/05

  Open cells, i.e. more than 50% of the pores are open · CPC title