| 摘要 |
<p>Binding fiber comprises copolyamide as first thermoplastic component(s) comprising caprolactam, laurolactam and/or 12-aminododecanoic acid, aminoundecanoic acid, and dicarboxylic acid(s) selected from aliphatic alpha ,omega -dicarboxylic acids with 4-14C, aromatic dicarboxylic acids such as terephthalic acid, isophthalic acid, and 2,6-naphthalene dicarboxylic acid, or diamine(s) selected from hexamethylene diamine, piperazine, 2-methyl-1,5-diaminopentane, or other aliphatic long-chain diamines. Binding fiber comprises copolyamide as first thermoplastic component(s) comprising (mol.%) caprolactam (40-70), laurolactam and/or 12-aminododecanoic acid (20-50), aminoundecanoic acid (0-10), and dicarboxylic acid(s) (10-30) selected from aliphatic alpha ,omega -dicarboxylic acids with 4-14C, aromatic dicarboxylic acids such as terephthalic acid, isophthalic acid, and 2,6-naphthalene dicarboxylic acid, where percentage of aromatic dicarboxylic acids is smaller than 15 mol.% relative to the total quantity of all dicarboxylic acids, or with respect to the dicarboxylic acid, an equimolar quantity of diamine(s) selected from hexamethylene diamine, piperazine, 2-methyl-1,5-diaminopentane, or other aliphatic long-chain diamines, where molar percentage of hexamethylene diamine, relative to the diamine mixture, is 50-100 mol.%. The sum of all lactams, all amino acids, and all dicarboxylic acids is 100 mol.%. The copolyamide has a relative viscosity of >= 1.50 when measured at 0.5% in m-cresol at 25[deg] C; melt volume rate (MVR) of maximum 20 cm 3>/10 minutes when measured at 190[deg] C and 2.16 kg load; hydrophobicity having a ratio of alkyl groups to amino groups in the monomers of smaller than 7.2; and melting point temperature of less than 105[deg] C in the water saturated condition and a higher melting point temperature in the dry condition.</p> |
