| http://www.w3.org/ns/prov#value | - Under such circumstances as described above, the present inventors have earnestly studied, and as a result, they have found that the ligands, which are sources of odor development, can be efficiently removed by the method comprising the steps of contacting polyolefin with a ligand decomposer such as water, alcohol or the like to decompose the residual ligands contained in the polyolefin and heatin
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