Sumitomo Chemical Company, Limited

Kazuhisa Kuroda

Yoshiharu Fukui

Tamaki Ishii

Manji Sasaki

Disclosed herein is a polypropylene molded article characterized in that the content of hexane and/or heptane therein is from 0.1 to 5 ppm and the content of 2,4-dimethyl-heptene-1 therein is from 0.1 to 5 ppm. It has a greatly lowered level of odor and hence is suitable for food packaging.

Polypropylene molded article

Disclosed herein is a food container of a resin composition composed of a polyolefin and an inorganic filler, said resin composition containing (i) a phenolic antioxidant and (ii) a slip agent and/or antistatic agent, said phenolic antioxidant being at least one kind selected from .beta.-(4-hydroxy-3-t-butyl-5-alkylphenyl)propionic acid esters, hindered phenols having an isocyanuric acid ester, 1,3,5-tris(3,5-di-t-butyl-4-hydroxybenzyl)-2,4,6-trimethylbenzene, specific phenol compounds, and 6-hydroxychroman compounds. The food container has a low level of offensive odors and discoloration.

Food container

An inorganic filler-containing polyolefin composition which comprises

Inorganic filler containing polyolefin composition

The invention relates to a stabilized polyolefin composition, which composition is stabilized against deterioration caused by contact with heavy metals and improved in coloration properties. This is achieved by blending a polyolefin with: (A) a phenolic compound represented by the formula (I), ##STR1## wherein R.sub.1 represents a C.sub.1 -C.sub.3 alkyl group, (B) a metal deactivator having one or more ##STR2## groups in the side chain, and (C) a sulfur-containing compound represented by the formula (II-1), (II-2), (II-3) or (II-4): ##STR3## wherein R.sub.2 represents a C.sub.4 -C.sub.20 alkyl group, ##STR4## wherein R.sub.3 represents a C.sub.4 -C.sub.20 alkyl group, ##STR5## wherein R.sub.4 represents a C.sub.3 -C.sub.18 alkyl group, and R.sub.5 and R.sub.6 independently represent a hydrogen atom or a C.sub.1 -C.sub.6 alkyl group, ##STR6## wherein R.sub.7 represents a C.sub.3 -C.sub.18 alkyl group.

Stabilized polyolefin composition

The invention relates to a stabilized polyolefin composition, which composition is stabilized against deterioration caused by contact with heavy metals and improved in coloration properties. This is achieved by blending a polyolefin with:

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Ichihara, Japan

Kazuhisa Kuroda