Poly(3-hydroxybutyrate)-based resin tube and method for producing same
AssigneeKaneka Corporation
InventorsTomoaki Hashiguchi, Tetsuo Okura
Life of this patent
Estimating the term…
Abstract
It is an object of an embodiment of the present invention to provide: a poly(3-hydroxybutyrate)-based resin tube which exhibits excellent resistance to repeated bending; and a method for producing the poly(3-hydroxybutyrate)-based resin tube. The object is attained by providing a poly(3-hydroxybutyrate)-based resin tube which contains 95 wt % to 60 wt % of a poly(3-hydroxybutyrate)-based resin and 5 wt % to 40 wt % of an aliphatic-aromatic polyester-based resin and has an elongation at yield point in a tensile test, a tensile elongation of not less than 50% in the tensile test, and a thickness of 0.01 mm to 0.6 mm.
Claims5
A method for producing a poly(3-hydroxybutyrate)-based resin tube,
- wherein the poly(3-hydroxybutyrate)-based resin tube comprises
- from 95 wt % to 60 wt % of a poly(3-hydroxybutyrate)-based resin;
- and
- from 5 wt % to 40 wt % of an aliphatic-aromatic polyester-based resin,
- wherein the poly(3-hydroxybutyrate)-based resin tube has an elongation at yield point in a tensile test and a tensile elongation of at least 50% in the tensile test, and
- the poly(3-hydroxybutyrate)-based resin tube has a thickness of 0.01 mm to 0.6 mm,
- wherein a crystal melting curve of a mixture of the poly(3-hydroxybutyrate)-based resin and the aliphatic-aromatic polyester-based resin in differential scanning calorimetry is such that a difference between a top temperature (Tma) of the crystal melting curve within a range of 130° C. to 155° C. and an end temperature (Tmb) of the crystal melting curve is at least 10° C.,
- the method comprising:
- processing the poly(3-hydroxybutyrate)-based resin tube at room temperature to form bellows therein.
Dependencies are inferred from the claim text.