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Title:
MULTILAYER TUBE
Document Type and Number:
WIPO Patent Application WO/2019/159861
Kind Code:
A1
Abstract:
The present invention provides a multilayer tube having excellent chemical resistance, low-temperature impact resistance after environmental stress loading, adhesion between layers, and durability while maintaining the characteristics of low-temperature impact resistance and monomer and oligomer elution resistance. The present invention is a multilayer tube in which a layer including an aliphatic polyamide composition and a layer including a vinyl-alcohol-based polymer composition are adjacent, wherein the aliphatic polyamide composition includes an aliphatic polyamide in which the ratio of the number of methylene groups to the number of amide groups is equal to or greater than a specific value, an aliphatic polyamide in which the absolute value of the difference in the solubility parameter SP value thereof with respect to the aforementioned aliphatic polyamide is in a specific range, and an elastomer polymer containing constituent units derived from an unsaturated compound having a carboxyl group and/or an acid anhydride group, and the vinyl-alcohol-based polymer composition includes a vinyl-alcohol-based polymer having specific structural units, and an elastomer polymer containing constituent units derived from an unsaturated compound having a carboxyl group and/or an acid anhydride group.

Inventors:
TSUBOI Kazutoshi (1978-96, Oaza Kogushi, Ube-sh, Yamaguchi 33, 〒7758633, JP)
FUJII Hiroaki (1978-96, Oaza Kogushi, Ube-sh, Yamaguchi 33, 〒7758633, JP)
KURUMIYA Aki (1978-96, Oaza Kogushi, Ube-sh, Yamaguchi 33, 〒7758633, JP)
NAKAMURA Koji (1978-96, Oaza Kogushi, Ube-sh, Yamaguchi 33, 〒7758633, JP)
Application Number:
JP2019/004778
Publication Date:
August 22, 2019
Filing Date:
February 12, 2019
Export Citation:
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Assignee:
UBE INDUSTRIES, LTD. (1978-96, Oaza Kogushi Ube-sh, Yamaguchi 33, 〒7758633, JP)
International Classes:
B32B1/08; B32B27/30; B32B27/34; F16L11/04
Domestic Patent References:
WO2017170985A12017-10-05
WO2015033982A12015-03-12
Foreign References:
JP2014240132A2014-12-25
JP2016069481A2016-05-09
JP6455649B12019-01-23
Attorney, Agent or Firm:
AKATSUKA Masaki et al. (Kurihashi Bldg. 6F, 1-63 Daimon-cho Omiya-ku, Saitama-sh, Saitama 46, 〒3300846, JP)
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