POLYAMIDE RESIN COMPOSITION AND MOLDED PRODUCT OF THE SAME

• Main Authors: SUDO TAKESHI, UTAZAKI KENICHI
• Format: Patent
• Language: English; Japanese
• Published: 22.03.2018
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

PROBLEM TO BE SOLVED: To provide a polyamide resin composition excellent in mechanical characteristics, flowability during molding processing, and thermal stability during melt retention and discoloration resistance, and to provide a molded product using the same.SOLUTION: A polyamide resin composition contains a polyamide resin (A) and a phosphorus-based compound (B), where the polyamide resin (A) contains a terminal-modified polyamide resin (a), the terminal-modified polyamide resin (a) is a resin having a structure (terminal structure) composed of a structural unit different from a repeating structural unit constituting a main chain of the polymer, in the terminal of a polymer, and when the total of a content of the polyamide resin (A) and a content of the phosphorus-based compound (B) is 100 pts.mass, a content of a phosphorus atom (b) is 0.001 pts.mass or more and 1.000 pts.mass or less.SELECTED DRAWING: None 【課題】本発明は、機械的特性、成形加工時の流動性、溶融滞留時の熱安定性および耐変色性に優れたポリアミド樹脂組成物およびそれを用いた成形品を提供する。【解決手段】本発明のポリアミド樹脂組成物は、ポリアミド樹脂（Ａ）およびリン系化合物（Ｂ）を含有するポリアミド樹脂組成物であって、ポリアミド樹脂（Ａ）は末端変性ポリアミド樹脂（ａ）を含有し、当該末端変性ポリアミド樹脂（ａ）が、ポリマーの主鎖を構成する繰り返し構造単位とは異なる構造単位から構成される構造（末端構造）をポリマーの末端に有する樹脂であり、ポリアミド樹脂（Ａ）の含有量とリン系化合物（Ｂ）の含有量の合計を１００質量部としたときのリン原子（ｂ）の含有量が０．００１質量部以上、１．０００質量部以下である、ポリアミド樹脂組成物である。【選択図】 なし