| 摘要 |
A process for removing silicone from polyamide material is provided which comprises treating silicone-coated polyamide material at an elevated temperature with an aqueous composition containing a surfactant, an alkaline hydroxide at a concentration of less than 2.1 percent hydroxide ion content by weight, and an alcohol miscible at that elevated temperature with the hydroxide solution, under such conditions of temperature and pressure and for such a duration of time as to dissolve the silicone coating but also to produce a lowering of the relative viscosity in formic acid of the polyamide of no more than 25. The process is particularly suitable for removal of silicones from airbags made from silicone-coated polyamide textiles. |
