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Ammonio Methacrylate Copolymer Type A

Excipient (pharmacologically inactive substance)

What is it?

Ammonio methacrylate copolymers are excipients used in pharmaceutical manufacturing. Ammonio methacrylate copolymers are compounds derived from ethyl acrylate, methyl methacrylate and a low content of methacrylic acid ester with quaternary ammonium groups. They are solid substances in the form of a white powder with a faint amine-like odor. The ammonium groups are present as salts and make the polymers permeable. They are used in the manufacture of time-released products that are pH-independent in the pharmaceutical industry.

[1] Evonik Industries. Eudragit RL PO. Accessed January 10, 2014. http://eudragit.evonik.com/product/eudragit/en/products-services/eudragit-products/sustained-release-formulations/rl-po/Pages/default.aspx

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