申请人:Toray Industries, Inc.
公开号:EP2415801A1
公开(公告)日:2012-02-08
A polyamide resin obtained by heating and condensation-polymerizing ingredients mainly comprising pentamethylenediamine having a total content of 2,3,4,5-tetrahydropyridine and piperidine of 0.10 wt.% or lower and an aliphatic dicarboxylic acid having 7 or more carbon atoms, a 0.01 g/mL solution of the polyamide resin in 98% sulfuric acid having a relative viscosity at 25 °C of 1.8-4.5. The polyamide resin has excellent heat resistance, extremely low water absorption, and excellent melt residence stability and is hence suitable for use as long molded articles represented by automotive radiator tanks, etc.
一种通过加热和缩合聚合成分获得的聚酰胺树脂,其主要成分包括五甲基二胺(2,3,4,5-四氢吡啶和哌啶的总含量为 0.10 重量%或更低)和一种具有 7 个或更多碳原子的脂肪族二羧酸,该聚酰胺树脂在 98% 硫酸中的 0.01 克/毫升溶液在 25 °C 时的相对粘度为 1.8-4.5。这种聚酰胺树脂具有极佳的耐热性、极低的吸水性和极好的熔体停留稳定性,因此适合用作以汽车散热器水箱等为代表的长模制品。