Resin molded body having excellent discoloration resistance
A molding, thermoplastic resin technology, applied in the direction of synthetic resin layered products, rigid containers, household appliances, etc., can solve the problems of containers that cannot be applied with transparency, and achieve the effect of excellent appearance
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[0037] In the preparation of the scavenger, the type and amount of the metal to be blended should be determined with reference to the type and amount of the blackened metal contained in the formed body, or the type and amount of the content that can generate corrosive gas, etc., although It is not always possible to apply this blend amount to other embodiments. For example, in a shaped body including an oxygen-absorbing resin composition containing cobalt neodecanoate as a catalyst in an amount of 10 to 1000 ppm in terms of metal, these three metals are preferably in an amount of 0.001 to 5.0 wt % in terms of metal, particularly preferably 0.01 wt % in terms of metal. An amount of up to 0.52% by weight is contained in the shaped body.
[0038] [Metals and metal compounds other than Zn, Sn or Mn]
[0039] In order to improve the preservability of the contents, the molded article of the present invention includes an oxygen-absorbing resin composition containing a transition met...
Embodiment 1
[0109] A multilayer sheet comprising five kinds of eight layers is composed of polypropylene resin having an MFR of 0.5 g / 10 min, an adhesive resin, an ethylene vinyl alcohol copolymer resin (hereinafter, "EVOH"), and particles of an oxygen-absorbing barrier resin composition. Materials, zinc-containing resin composition pellets to produce.
[0110] Oxygen-absorbing barrier resin composition pellets are prepared from EVOH, cobalt neodecanoate and maleic acid-modified polybutadiene, wherein the content of cobalt neodecanoate is 0.23 parts by weight and maleic acid to 94.77 parts by weight of EVOH. The content of the acid-modified polybutadiene was 5.00 parts by weight. Zinc-containing resin composition pellets were prepared by adding 5 parts by weight of zinc stearate to 95 parts by weight of a polypropylene resin having an MFR of 0.5 g / 10 min (zinc compound concentration: 5 wt %).
[0111] The layer configuration and weight ratio when viewed from the outside are as follows. ...
Embodiment 2
[0124] Except that the zinc-containing resin composition layer is formed of zinc-containing resin composition pellets (zinc compound concentration: 5 wt %) and polypropylene resin with an MFR of 0.5 g / 10 min, and the zinc compound concentration in the layer and the total zinc compound concentration were measured separately Except for 1 wt% and 0.1 wt%, multilayer sheets, multilayer containers, sample A and sample B were produced in the same manner as in Example 1 and evaluated for discoloration and transparency. The evaluation results are shown in Table 1.
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