Patent · US Active

Hierarchical chromonic structures

US8092710B2 · kind B2 · utility

2Cited by

29References

24Claims

0Family size

Assignee

3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

Sanat Mohanty · Germantown, US
Hassan Sahouani · Hastings, US
Cristin E. Moran · Windom, US

Key dates

Filing date	Dec 19, 2005
Grant date	Jan 10, 2012
Priority date	—
Expiry date	Aug 17, 2028

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/25
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

A method of making a chromonic structure comprises (a) preparing a first aqueous mixture comprising (i) a continuous water-soluble polymer phase and (ii) a discontinuous chromonic phase comprising a chromonic material, to form chromonic nanoparticles; (b) non-covalently crosslinking the resulting chromonic nanoparticles with a multivalent cation salt; (c) dispersing the resulting crosslinked chromonic nanoparticles in a water-soluble polymer phase to form a chromonic nanoparticle dispersion; and (d) preparing a second aqueous mixture comprising (i) the chromonic nanoparticle dispersion and (ii) a continuous chromonic phase comprising a chromonic material.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.