| 摘要 |
<p>PURPOSE:To prevent degradation of material property of a recycled product and use the recycled product for a long time by adding a specific phenol compound and a specific ring phosphite compound when the recycling is done by shredding or crashing, heating, melting, and molding a scrap of polyolefin resin product. CONSTITUTION:To a polyolefin resin 100 pts.wt. constituting a scrap of a polyolefin resin product, at least one kind of a phenol compound 0.01-5 pts.wt. to be expressed by the formulas I or II and a ring phosphite compound 0.01-5 pts.wt. to be expressed by the formula III are added. In the formula I, R1 expresses 1-4C alkyl group, n expresses 1-4, A expresses residue obtained by removing n pieces of hydroxyl from alcohol of 1-4 valence. In the formula II, R2 expresses 1-4C alkyl group, R expresses hydrogen atom or 1-4C alkyl group. In the formula III, R4 expresses 1-4C alkyl group or-CH2CH2-CO-O-R5, and R5 expresses 1-30C alkyl group.</p> |
