Polyamide resin composition

Abstract

Abstract PURPOSE: To provide a polyamide resin compsn. which excels in rigidity and mold release characteristics and is suitable for the production of molded articles such as gear, bush, and connector, by a method wherein a higher aliph. bisamide cpd. is blended with poly-ε-caprolactam contg. γ-type crystals. CONSTITUTION: (B) 0.005W1pts.wt. of a higher aliph. bisamide cpd. is blended with (A) 100pts.wt. of poly-ε-caprolactam with a γ-type crystal content of at least 0.4 to obtain the desired polyamide resin compsn. The cpd. (A) is prepd., e.g., by immersing pellets of nylon 6 produced from ε-caprolactam or ε-aminocaproic acid, in an aq. soln. of Ba(OH) 2 or BaO. Ba(OH) 2 or BaO is used in an amount of 0.005W0.5wt%, pref. 0.05W0.2wt% based on the weight of nylon 6. Examples of (B) are cpd. of formula I or II, wherein R 1 is 1W10C hydrocarbon gp.; R 2 , R 3 are 10W30C hydrocarbon gp.; R 4 , R 5 are H, 1W4C hydrocarbon gp., such as methylene bisstearylamide. COPYRIGHT: (C)1980,JPO&Japio

Inventors

• 👤 Norio Arakawa
• 👤 Toshio Muraki
• 👤 Kozo Honda

Bibliographic Details