Production of pharmaceutical protective coatings with good resistance in a neutral environment

US10912835B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Karl Kolter · Ludwigshafen am Rhein, DE
• Silke Gebert · Bad Kötzting, DE
• Michael Muller · Munich, DE
• Maximilian Angel · Mutterstadt, DE

Key dates

• Filing date: Dec 20, 2017
• Grant date: Feb 9, 2021
• Expiry date: Dec 20, 2037

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61K47/12
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

Pharmaceutical coatings obtained from coating compositions based on film-forming copolymers of N,N-diethylaminoethyl methacrylate (DEAEMA) and methyl methacrylate (MMA) comprising a weight ratio of DEAEMA:MMA in the range of 35:65 to 55:45, where the copolymers are present partially neutralized with C3-C10-dicarboxylic acids.