Patent · US Active

Quarternization of the additive amino alkylmethacrylate copolymer E for improving permeability and solubility of pharmaceuticals

US8399523B2 · kind B2 · utility

1Cited by

2References

9Claims

0Family size

Assignee

Evonik Röhm GmbH · DE

Inventors

Peter Langguth · Schallstadt, DE
Stefan Grube · Berlin, DE
Holger Frey · Emmendingen, DE
Boris Obermeier · Hattersheim, DE

Key dates

Filing date	Dec 12, 2008
Grant date	Mar 19, 2013
Priority date	—
Expiry date	Jun 16, 2029

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F220/34
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

The present invention relates to a strategy for improving the permeability and solubility of pharmaceuticals, based on adding a chemically modified amino alkyl methacrylate copolymer E, wherein the chemical modification is the quaternization of a fraction of the existing amino alkyl groups.

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