| 摘要 |
PURPOSE: A flameproof acrylic copolymer is provided to ensure excellent fire retardant characteristic and impact resistance even if additional flame retardant and impact modifier are used and not to prevent toxic gases such as hydrogen halide gas. CONSTITUTION: A copolymer resin is such that a polyurethane oligomer is grafted in a polymer including (A) 60-90 weight% of a (meth)acrylic monomer and (B) 10-40 weight% of a vinyl group-containing phosphorous-based monomer. The polyurethane oligomer is grafted in the amount of 1-10 parts by weight based on 100 parts by weight of a polymer including the (meth)acrylic monomer and the vinyl group-containing phosphorous-based monomer. The average molecular weight of the copolymer resin is 50,000-500,000 g/mol. |
