The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 06, 2022
Filed:
Oct. 25, 2019
Ube Industries, Ltd., Ube, JP;
UBE INDUSTRIES, LTD., Ube, JP;
Abstract
This is to provide a multilayer tube excellent in interlayer adhesiveness and durability thereof while maintaining various characteristics such as low temperature impact resistance, bursting pressure strength and flexibility. In a multilayer tube having at least two kinds of layers and the both layers are adjacent to each other, an aliphatic polyamide composition constituting one of the layers contains an aliphatic polyamide having a ratio of a number of methylene groups to a number of amide groups of a specific value or more and a copolymerized polyamide having a specific unit, and an elastomeric polymer which may contain a constitutional unit derived from an unsaturated compound having a carboxyl group(s) and/or an acid anhydride group(s).