| 摘要 |
PROBLEM TO BE SOLVED: To provide a fiber structure having excellent durability of a fluorine-based water repellent by using the fluorine-based water repellent considering environmental problems. SOLUTION: The fluorine-based water repellent is characterized as follows. The fluorine-based water repellent is a mixture of a fluorine-based water-repellent compound (A) with a fluorine-based water-repellent compound (B). The concentration of PFOA (perfluorooctanoic acid) and/or PFOS (perfluorooctane sulfonic acid) when measured by an LC-MS (high performance liquid chromatograph-mass spectrometer) is <5 ng/g in the (A), >5 ng/g in the (B) and <5 ng/g in the mixture of the (A) with the (B). COPYRIGHT: (C)2007,JPO&INPIT
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