HYPROMELLOSE ACETATE SUCCINATE, METHOD FOR PRODUCING THE SAME AND COMPOSITION CONTAINING THE SAME

USPTO Patent Application US 2017/0260296 A1
Application Date: Sep. 14th, 2017

ABSTRACT

Provided are hypromellose acetate succinate (HPMCAS) which exhibits high solubility and can suppress generation of undissolved materials when dissolved in a solvent; an HPMCAS-containing composition; and a method for producing...
Application Number:
15/449,725
International Classification:
C08B 13/00 (20060101); C09D 7/00 (20060101); C09D 101/32 (20060101)
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CLAIMS

That which is claimed is:

1. Hypromellose acetate succinate having a ratio of 2-position MS to 3-position MS of 1.2 or less, wherein the 2-position MS means a molar substitution of hydroxypropyl group by which a hydrogen atom of a hydroxyl group on 2-position carbon of each glucose unit of the hypromellose acetate succinate has...

DESCRIPTION

RELATED APPLICATION

This application claims priority from Japanese Patent Application No. 2016-048254, filed Mar. 11, 2016, the disclosure of which is incorporated by reference herein in its entirety.
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