| 摘要 |
<p>A modified polyacetal obtained by heating 100 pts.wt. of a polyacetal component (A) together with 0.1 - 30 pts.wt. of a polymerizable compound (B) having a modifying group such as an epoxy, carboxyl or acid anhydride group to thereby introduce the modifying group into the polyacetal. The component (A) includes a polyacetal (A1) selected from among polyoxymethylene homopolymer and copolymers and a polymerizable polyacetal (A2) having functional groups containing a polymerizable unsaturated bond. The efficiency of introduction of the modifying group can be improved by adding 0.01 - 2.5 pts.wt. of a free-radical initiator to 100 pts.wt. in total of the components (A) and (B) and mixing in a state in which the polyacetal is molten. This process ensures simple and efficient introduction of the modifying group into the polyacetal component and improves the affinity of the polyacetal.</p> |
