| 摘要 |
[Object] The present invention provides a 4-methyl-1-pentene polymer having excellent balance between heat resistance and rigidity, a process for producing the polymer, and a film and a LED mold formed from the polymer. [Means for Solving the Problem] The 4-methyl-1-pentene polymer comprises 50 to 100% by mass of a constituting unit derived from 4-methyl-1-pentene and 0 to 50% by mass of a constituting unit derived from at least one of olefins having 2 to 20 carbon atoms excluding 4-methyl-1-pentene, wherein the 4-methyl-1-pentene polymer is obtainable by continuously feeding a monomer forming the 4-methyl-1-pentene polymer and an organic solvent to a polymerization reactor and continuously extracting a polymerization reaction mixture containing the resulting 4-methyl-1-pentene polymer from the polymerization reactor.
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