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    • 7. 发明授权
    • Intrinsically gel-free, randomly branched polyamide
    • 本质上无凝胶,无规分支的聚酰胺
    • US06835799B2
    • 2004-12-28
    • US09882298
    • 2001-06-18
    • Atze J. NijenhuisRené AbersonBoudewijn J. R. Scholtens
    • Atze J. NijenhuisRené AbersonBoudewijn J. R. Scholtens
    • C08G6908
    • C08J5/18C08G69/08C08G69/16C08G69/48C08J2377/06Y10T428/29Y10T428/2967Y10T428/2969
    • The invention relates to a randomly branched polyamide comprising at least units derived from: 1. AB monomers, 2. at least one compound I, being a carboxylic acid (Av) having a functionality v≧2 or an amine (Bw) having a functionality w≧2, 3. at least one compound II, being a carboxylic acid (Av) having a functionality v≧3 or an amine (Bw) having a functionality w≧3, compound II being a carboxylic acid if compound I is an amine or compound II being an amine if compound I is a carboxylic acid and the amounts of all units derived from carboxylic acids and amines in the polyamide satisfying conditions as mentioned in claim 1. The composition of the randomly branched polyamide is such that it cannot form a crosslinked polyamide (and thus no gels, either), in particular during the prepolymerization, the polymerization, the post-condensation, the processing and the storage of the randomly branched polyamide, and this at a variety of ambient factors, for instance at elevated temperature and pressure. The polyamide is eminently suitable for the production of fiber and film, in particular for flat film.
    • 本发明涉及至少包含衍生自以下的单元的无规分支的聚酰胺:1。 AB单体,2。 至少一种化合物I是具有官能度≥2的羧酸(Av)或官能度≥2的胺(Bw)。 至少一种化合物II是官能度≥3的羧酸(Av)或官能度≥3的胺(Bw),如果化合物I是胺或化合物II,化合物II是羧酸 胺,如果化合物I是羧酸,并且在聚酰胺中衍生自羧酸和胺的所有单元的量满足权利要求1中所述的条件。无规分支的聚酰胺的组成使得它不能形成交联的聚酰胺(和 因此,也不需要凝胶),特别是在预聚合期间,聚合,后缩合,加工和无规分支的聚酰胺的储存,以及在各种环境因素下,例如在升高的温度和压力下。 聚酰胺特别适用于生产纤维和薄膜,尤其适用于平板薄膜。