Resin composition and resin modifying agent
AssigneeKuraray Co., Ltd.
InventorsJunya TAKAI, Masaya IMAMATSU, Hiroyuki KONISHI
Life of this patent
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Abstract
A resin composition including a block copolymer (I) and an aliphatic polyester-based resin (II), in which the block copolymer (I) contains a block structural unit (A) having a polylactic acid unit (a) as a main component and a block structural unit (B) having a polyester unit (b) as a main component; the polyester unit (b) contains a unit derived from an aliphatic diol (bl) and an aliphatic dicarboxylic acid (b2); the aliphatic diol (b1) has an alkyl group as a branched chain and does not have a quaternary carbon atom; two hydroxy groups in the aliphatic diol (b1) are primary hydroxy groups; and the block copolymer (I) has a melting point of lower than 180° C.
Claims18
A resin composition comprising a block copolymer (I) and an aliphatic polyester-based resin (II),
- wherein the block copolymer (I) contains a block structural unit (A) having a polylactic acid unit (a) as a main component and a block structural unit (B) having a polyester unit (b) as a main component;
- the polyester unit (b) contains a unit derived from an aliphatic diol (b1) and an aliphatic dicarboxylic acid (b2);
- the aliphatic diol (b1) has an alkyl group as a branched chain and does not have a quaternary carbon atom;
- two hydroxy groups in the aliphatic diol (b1) are primary hydroxy groups;
- and
- the block copolymer (I) has a melting point of lower than 180° C.
A resin modifying agent comprising a block copolymer (I) containing a block structural unit (A) having a polylactic acid unit (a) as a main component and a block structural unit (B) having a polyester unit (b) as a main component,
- wherein the polyester unit (b) contains a unit derived from an aliphatic diol (b1) and an aliphatic dicarboxylic acid (b2);
- the aliphatic diol (b1) has an alkyl group as a branched chain and does not have a quaternary carbon atom;
- and
- two hydroxy groups in the aliphatic diol (b1) are primary hydroxy groups.
Dependencies are inferred from the claim text.