| 摘要 |
<p>A sheet comprising a non-woven fabric in which ultra-fine fibers of a single fiber thickness of 0.5 dtex or less are entangled and an elastomeric binder mainly composed of a polyurethane, wherein said polyurethane is a polycarbonate-based polyurethane having a polycarbonate skeleton represented by the following general formulas (1) and (2), and having a gelation point of 2.5 ml or more and less than 6 ml. (In the formula, R 1 and R 2 are aliphatic hydrocarbon groups with 7 to 11 carbons, and they may be same or different. Furthermore, n and m are positive integers, and when R 1 and R 2 are different, it is a block copolymer or a random copolymer) (In the formula, R 3 and R 4 are aliphatic hydrocarbon groups with 3 to 6 carbons, and they may be same or different. Furthermore, x and y are positive integers, and when R 3 and R 4 are different, it is a block copolymer or a random copolymer)</p> |
