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Title:
POLYMER COMPOSITION, MOLDED BODY AND NERVE REGENERATION INDUCING TUBE
Document Type and Number:
WIPO Patent Application WO/2020/241624
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a polymer composition which has low Young's modulus, high tensile strength and excellent flexibility. The present invention is a polymer composition which contains a polylactic acid and a dilactide/ε-caprolactone copolymer, wherein 20-40% by mass of the polylactic acid is contained relative to a total of 100% by mass of the polylactic acid and the dilactide/ε-caprolactone copolymer; and the dilactide/ε-caprolactone copolymer satisfies the requirements (1) and (2) described below. (1) The R value represented by the formula below is from 0.45 to 0.99 (inclusive). R = (AB)/(2(A)(B)) × 100 In the formula, (A) is the molar fraction (%) of dilactide residues in the dilactide/ε-caprolactone copolymer; (B) is the molar fraction (%) of ε-caprolactone residues in the dilactide/ε-caprolactone copolymer; and (AB) is the molar fraction (%) of structures, in which a dilactide residue and an ε-caprolactone residue are adjacent to each other (A-B and B-A), in the dilactide/ε-caprolactone copolymer. (2) At least either of the dilactide residues or the ε-caprolactone residues have a degree of crystallization of less than 14%.

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Inventors:
HARIMOTO KENICHI (JP)
TANABE KANTA (JP)
TANAHASHI KAZUHIRO (JP)
SAKAGUCHI HIROKAZU (JP)
Application Number:
PCT/JP2020/020695
Publication Date:
December 03, 2020
Filing Date:
May 26, 2020
Export Citation:
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Assignee:
TORAY INDUSTRIES (JP)
International Classes:
C08L67/04; C08G63/60; C08L101/16
Domestic Patent References:
WO2019035357A12019-02-21
WO2019035857A12019-02-21
Foreign References:
JP2007138131A2007-06-07
JP2008037996A2008-02-21
JP2016190921A2016-11-10
JP2005525911A2005-09-02
JP2008255349A2008-10-23
JP2017179234A2017-10-05
Other References:
D. W. GRIJPMA ET AL., POLYMER BULLETIN, vol. 25, no. 335, pages 341
See also references of EP 3978569A4
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