| 摘要 |
The heat-resistant transparent acrylic resin is produced by reacting a methacryl resin with a primary amine of formula RNH2, urea, 1,3-dimethyl (diethyl) urea, ammonium acetate or ammonium bicarbonate of formula RNH3HCO3, and a distilled water in the presence of a solvent at 180-350 deg.C. In the formulas, R is H, C1-20 alkyl, cycloalkyl, aryl, or aralkyl. The methacryl resin is pref. MMA mono-polymer of MMA/ethylene - unsatd. monomer copolymer.
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