| 摘要 |
Adhesive composition comprises: polyamide A having an average carbon atoms (4-8.5, preferably 4-7) per nitrogen atom (CA); polyamide B having a fusion temperature of >= 180[deg] C and an average number of carbon atoms (7-10, preferably 7.5-9.5) per nitrogen atom (CB); and polyamide C having an average number of carbon atoms (9-18, preferably 10-18) per nitrogen atom (CC), where 50 wt.% of the composition formed by one or more polyamides of polyamide A, B and C, where the mass weighted average of melting enthalpy of polyamides in the composition is greater than 25 J/g. Adhesive composition comprises: polyamide A having an average carbon atoms (4-8.5, preferably 4-7) per nitrogen atom (CA); polyamide B having a fusion temperature of >= 180[deg] C and an average number of carbon atoms (7-10, preferably 7.5-9.5) per nitrogen atom (CB); and polyamide C having an average number of carbon atoms (9-18, preferably 10-18) per nitrogen atom (CC), where 50 wt.% of the composition formed by one or more polyamides of polyamide A, B and C, where the mass weighted average of melting enthalpy of polyamides in the composition is greater than 25 J/g measured by differential scanning calorimetry (DSC), and the average number of carbon atoms (per nitrogen atom) of polyamides A, B and C is CA less than CB, which is less than CC. An independent claim is included for a structure comprising at least two layers, where one of two layers of adhesive layer (a) is constituted of the adhesive composition,. |
