| 摘要 |
Foamable composition comprises (a) at least one base polymer, (b) at least one propellant, and (c) at least one lubricant and/or at least one heat stabilizer. Independent claims are also included for: (1) a polymer foam obtainable by expanding the above composition, exhibiting a thermal conductivity of less than 0.04 W/(mK), an expansion of >= 1000%, preferably >= 2000%, and/or a weldability of 80 seconds at 240-260[deg] C; (2) a foam-filled hollow body in the form of a window- or door frame, comprising at least one cavity, which is filled with the above polymer foam; and (3) producing the foam-filled hollow body, comprising introducing the composition into at least one cavity of the hollow body during extrusion of the hollow body, and foaming. |
