MULTI-LAYER STRUCTURE
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United States of America Patent
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Sep 13, 2018
app pub date -
Nov 22, 2016
filing date -
Nov 22, 2016
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Abstract
The present invention provides a multi-layer structure having: a polyamide layer (A) comprising a composition containing an aliphatic polyamide such as a polyamide including C10-12 lactam-derived constituent units and/or C10-12 aminocarboxylic acid-derived constituent units; and a polyamide layer (B) comprising a composition containing, in a predetermined amount ratio, an aliphatic polyamide such as a polyamide including diamine units including at least 70 mol % of xylylenediamine-derived constituent units and dicarboxylic acid units including at least 70 mol % of C4-12 aliphatic dicarboxylic acid-derived constituent units, or a polyamide including a modified polyolefin and C6-12 lactam-derived constituent units and/or C6-12 aminocarboxylic acid-derived constituent units. According to a preferred embodiment of the present invention, this multi-layer structure has excellent flexibility as well as exceptional chemical resistance and gas barrier performance.
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