| 摘要 |
<p>Disclosed is a fluorine-containing stain-proofing agent composition using a short chain perfluoroalkyl group, which is excellent in stain-proofing property, water repellency and oil repellency, while exhibiting good durability against washing. Specifically disclosed is a stain-proofing agent composition containing a fluorine-containing copolymer which contains 30-65% by mass of a polymerization unit (a) having a perfluoroalkyl group with 1-6 carbon atoms, 1-67% by mass of a polymerization unit (b1) having a-(CHO)-group, and 3-34% by mass of a polymerization unit (b2) having a-(CHO)-group. In the fluorine-containing copolymer, the-(CHO)-group is contained in an amount of 20-65% by mass and the-(CHO)-group is contained in an amount of 2-13% by mass.</p> |
