| 摘要 |
PURPOSE:The titled fibers, prepared by copolymerizing terephthalic acid (TA) with ethylene glycol (EG), butanediol (BD) and a specific copolymerization component in a specific proportion, having special physical properties, and heat bondable to a polyester even at a low temperature. CONSTITUTION:Terephthalic acid (TA), ethylene glycol (EG) and 1,4-butanediol (BD) as principal components are copolymerized with (A) a saturated straight chain aliphatic dicarboxylic acid of formulaI(n is 4-8), (B) an aromatic copolymerization component other than (TA) and (C) an aliphatic and/or alicyclic copolymerization component other than (EG), (BD) and the component (A) as copolymerization components to satisfy the relations of formulas II-VII[formulas II-VI are copolymerization mole % based on the total acid components; formula VII is wt% based on the formed copolymer expressed in terms of the component (C) as the COOH and/or OH types]simultaneously to give the aimed fibers, having the heat of crystaline melting >=2cal/g, the minimal time of crystallization within 4min and a shear strength >=5kg/cm<2> on bonding a polyethylene teretphthalate film thereto, and usable for non-woven fabrics, etc. |
