Patent · US Active

Composition comprising an organic liquid diluent and a cellulose ether of very low viscosity

US10272156B2 · kind B2 · utility

0Cited by

8References

3Claims

0Family size

Assignee

DOW GLOBAL TECHNOLOGIES LLC · US

Inventors

Meinolf Brackhagen · Walsrode, DE
Nicholas S. Grasman · Midland, US
Mark J. Hall · Gaylord, US
Steven J. Guillaudeu · Midland, US
Robert L. Schmitt · Stuart, US
Matthias Knarr · Nienburg/Weser, DE

Key dates

Filing date	Oct 13, 2016
Grant date	Apr 30, 2019
Priority date	—
Expiry date	Oct 13, 2036

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L1/284
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

A liquid composition which comprises an organic liquid diluent and at least one non-ionic cellulose ether having a viscosity of up to 2.33 mPa·s, measured as a 2 wt.-% solution in water at 20° C., is stable over an extended time period.The liquid composition is useful for preparing a solid dispersion comprising at least one active ingredient in at least one cellulose ether by spray-drying.Alternatively a solid dispersion can be produced by blending and extruding at least one active ingredient, at least one cellulose ether having a viscosity of up to 2.33 mPa·s and optionally one or more adjuvants.

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