反应详情

Acrylic acid, ibuprofen and poly(acrylic acid) (MW 2,000) and (MW 5,000) were purchased from Aldrich. Poly(methacrylic acid-methylmethacrylate) (Eudragit L) was provided by Rhom Pharma (Germany). Thionyl chloride, oxalyl chloride, and acetic anhydride were freshly distilled under nitrogen prior to use. All solvents were analytical grade.