Title:
LAYERED TUBE
Document Type and Number:
WIPO Patent Application WO/2019/065232
Kind Code:
A1
Abstract:
Provided is a layered tube comprising a layer including a specific aliphatic polyamide composition and a layer including a semi-aromatic polyamide composition containing a semi-aromatic polyamide having a specific structure or a mixture thereof, said layers being disposed adjacent to each other, wherein the aliphatic polyamide composition includes: an aliphatic polyamide having a melting point no more than a specific value and having a ratio of the number of methylene groups to the number of amide groups that is at least a specific value; an aliphatic polyamide having an absolute difference in the solubility parameter/SP value with the aforementioned aliphatic polyamide, such absolute difference falling within a specific range; and an elastomer polymer containing a constituent unit derived from an unsaturated compound having a carboxyl group and/or an acid anhydride group.
Inventors:
TSUBOI KAZUTOSHI (JP)
NAKAMURA KOJI (JP)
KUSUMOTO TAKAAKI (JP)
DOUYAMA DAISUKE (JP)
NAKAMURA KOJI (JP)
KUSUMOTO TAKAAKI (JP)
DOUYAMA DAISUKE (JP)
Application Number:
PCT/JP2018/033772
Publication Date:
April 04, 2019
Filing Date:
September 12, 2018
Export Citation:
Assignee:
UBE INDUSTRIES (JP)
International Classes:
B32B1/08; F02M37/00; F16L11/04
Domestic Patent References:
| WO2015033982A1 | 2015-03-12 | |||
| WO2017170985A1 | 2017-10-05 | |||
| WO2015022818A1 | 2015-02-19 | |||
| WO2017094564A1 | 2017-06-08 |
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Other References:
POLYMER ENGINEERING AND SCIENCE, vol. 14, no. 2, 1974, pages 147 - 154
See also references of EP 3689591A4
See also references of EP 3689591A4
Attorney, Agent or Firm:
TSUKUNI & ASSOCIATES et al. (JP)
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