The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 13, 2018
Filed:
Feb. 28, 2014
Dow Global Technologies Llc, Midland, MI (US);
Dow Global Technologies LLC, Midland, MI (US);
Abstract
Esterified cellulose ethers which comprise (i) groups of the formula —C(O)—R—COOA or (ii) a combination of aliphatic monovalent acyl groups and groups of the formula —C(O)—R—COOA, wherein R is a divalent aliphatic or aromatic hydrocarbon group and A is hydrogen or a cation, which have a viscosity of up 50 mPa·s, measured as a 10 wt % solution of the esterified cellulose ether in acetone at 20° C., and a weight average molecular weight Mof at least 220,000 Dalton, or which have a viscosity of up 100 mPa·s, measured as a 10 wt % solution of the esterified cellulose ether in acetone at 20° C., and a weight average molecular weight Mof at least 310,000 Dalton are useful for preparing solid dispersions comprising drugs.