| 摘要 |
PROBLEM TO BE SOLVED: To provide a polyester fiber for binder obtained by copolymerizing 5-sodium sulfoisophtahlate, excellent in dispersibility of fibers in water in paper making process and having excellent adhesive property. SOLUTION: This polyester fiber comprises the polyester obtained by copymerizing 3-6 mole % of the 5-sodium sulfoisophthalate, and the fiber has 0.30-0.45 of intrinsic viscosity, <=1.5 dtex of monofilament denier and <=0.05 of birefringence.
|
