Medical packaging container
AssigneeMitsubishi Gas Chemical Company, Inc.
InventorsShun Ogawa, Takeshi Hirokane, Takashi Kashiba, Shota Arakawa, Kenichiro Usuda
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Abstract
Provided are a medical packaging container having a polyester resin (A1) including diol units and dicarboxylic units, the diol units including at least one diol unit in an amount of 1 to 30 mol % selected from diol units having a bridged alicyclic skeleton derived from a compound represented by formula (1), formula (2), or formula (3), the dicarboxylic acid units including dicarboxylic acid units having a naphthalene skeleton in an amount of 70 mol % or more; and a manufacturing method of the polyester for the container.
Claims25
A medical packaging container comprising a polyester resin (A1) comprising diol units and dicarboxylic units,
- the diol units comprising at least one diol unit in an amount of 1 to 30 mol % selected from diol units having a bridged alicyclic skeleton derived from a compound represented by formula (1), formula (2), or formula (3),
- the dicarboxylic acid units comprising dicarboxylic acid units having a naphthalene skeleton in an amount of 70 mol % or more.
A medical packaging container comprising a multi-layer structure having at least three layers, an innermost layer and an outermost layer in the multi-layer structure each comprising an amorphous polyester resin (A), and at least one layer of intermediate layers in the multi-layer structure comprising a polyolefin resin (B).
A manufacturing method of a polyester resin, comprising the steps of:
- producing an oligomer by transesterification of a dicarboxylic acid diester component comprising naphthalenedicarboxylic acid diester and at least one selected from the compounds represented by formula (1), formula (2), and formula (3), and a diol component comprising ethylene glycol in the presence of a manganese compound;
- and
- polycondensing the oligomer in the presence of an antimony compound;
- wherein a phosphorus compound is used as a thermal stabilizer, and
- wherein the polyester resin has a manganese atom content of 40 to 200 ppm and an antimony atom content of 50 to 200 ppm, with a ratio (M/P) of the total content (M) (ppm) of manganese atoms and antimony atoms to the phosphorus atom content (P) (ppm) of 1.5 to 4.0.
Dependencies are inferred from the claim text.