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:
Dec. 24, 2019
Filed:
Aug. 22, 2017
Applicant:
Dow Global Technologies Llc, Wilmington, DE (US);
Inventor:
Oliver Petermann, Hamburg, DE;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L 1/32 (2006.01); A61K 9/48 (2006.01);
U.S. Cl.
CPC ...
C08L 1/32 (2013.01); A61K 9/4816 (2013.01); A61K 9/4833 (2013.01);
Abstract
A cellulose ether acetate phthalate is provided, wherein the degree of substitution of phthalyl groups is from 0.02 to 0.25, the degree of neutralization of phthalyl groups is not more than 0.5, the degree of substitution of acetyl groups is from 0.02 to 0.40, and the total degree of substitution of phthalyl and acetyl groups is not more than 0.50. The cellulose ether acetate phthalate has a solubility in water of at least 2.0 weight percent at 2° C.