Biodegradable polyester resin composition, preparation method therefor, and foamed article and molded article produced therefrom
AssigneeUnitika Ltd.
InventorsFumio Matsuoka, Kazue Ueda, Tatsuya Matsumoto, Yutaka Oogi
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Abstract
A biodegradable polyester resin composition which comprises a thermoplastic polymer comprising 100 parts by mass of an aliphatic polyester (A) and 0.01 to 5 parts by mass of a (meth)acrylic ester (B1) and/or a glycidyl ether (B2), and has a gelation index (1) of not lower than 0.1% and a gelation index (2) of not higher than 0.5%.
Claims20
A biodegradable polyester resin composition comprising a thermoplastic polymer which comprises 100 parts by mass of an aliphatic polyester (A) and 0.01 to 5 parts by mass of a (meth)acrylic ester (B1) and/or a glycidyl ether (B2), the biodegradable polyester resin composition having a gelation index (1) of not lower than 0.1% and a gelation index (2) of not higher than 0.5%.
A preparation method for a biodegradable polyester resin composition comprising the step of melt-kneading an aliphatic polyester (A), a (meth)acrylic ester (B1) and/or a glycidyl ether (B2), and an organic peroxide (C), whereby the biodegradable polyester resin composition is prepared as containing a thermoplastic polymer comprising 100 parts by mass of the aliphatic polyester (A) and 0.01 to 5 parts by mass of the (meth)acrylic ester (B1) and/or the glycidyl ether (B2) and having a gelation index (1) of not lower than 0.1% and a gelation index (2) of not higher than 0.5%.
Dependencies are inferred from the claim text.