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Polypropylene resin composition for container of magnetic recording material

阅读:120发布:2022-01-29

专利汇可以提供Polypropylene resin composition for container of magnetic recording material专利检索,专利查询,专利分析的服务。并且PURPOSE: To prepare the titled resin composition resistant to discoloration even sealing together with a magnetic recording material for a long period, by adding an organic phosphonite compound or organic phosphite compound as an antioxidant to the base resin.
CONSTITUTION: The objective resin is prepared by adding (A) 0.01W0.5wt% preferably 0.03W0.3wt% of an antioxidant comprising an organic phosphonite such as tetrakis(2,4-di-t-butylphenyl) 4,4'-biphenylene-diphosphonite and/or an organic phosphite compound such as tris-(mono- or di-norylphenyl)phosphite to (B) a polypropylene resin which is a propylene homopolymer or a copolymer of propylene and other α-olefin and composed mainly of isotactic structure. The resin is suitable for the munufacture of a white or light-colored or non-colored molded article.
COPYRIGHT: (C)1984,JPO&Japio,下面是Polypropylene resin composition for container of magnetic recording material专利的具体信息内容。

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