| 摘要 |
PURPOSE:To provide the titled compsn. having excellent heat resistance, rigidity and moldability, consisting of a specified copolymer and glass fiber. CONSTITUTION:An arom. vinyl compd., methyl methacrylate and (meth)acrylic acid are copolymerized in the presence of 1,1-bis(tert-butylper-oxy)-3,3,5-trimethylolcyclohexane as a polymn. initiator to 50% conversion of monomers. The reaction mixture is then kept at 260 deg.C under vacuum of 1-10mm.Hg for 5-60min to remove unreacted monomers and to cause cyclization by the intramolecular condensation of (meth)acrylic acid to thereby form a six-membered acid anhydride unit, thus obtaining a copolymer contg. 5-85wt% six-membered acid anhydride unit of the formula (wherein R1, R2 are each H, methyl), 1-80wt% methyl methacrylate unit, 1-65wt% arom. vinyl compd. unit and 0-10wt% (meth)acrylic acid unit. 5-100pts.wt. glass fiber of 8-20mu in diameter is blended with 100pts.wt. said copolymer.
|
