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), the (meth)acrylic ester (B1) having two or more (meth)acryl groups in the molecule thereof, the aliphatic polyester (A) being crosslinked with the (meth)acrylic ester (B1), 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 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),
- wherein the (meth)acrylic ester (B1) has two or more (meth)acryl groups in the molecule thereof, and the aliphatic polyester (A) is crosslinked with the (meth)acrylic ester (B1), 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.