Toray Industries, Inc.

Yoshiyuki Komuro

Nagayoshi Naito

Tadao Tsutsumi

Eizo Gotah

Koji Kozuka

Yukio Yonekura

Takeshi Tomishima

Tutomu Suyama

Katuya Ono

Sadakatu Hashimoto

Method for continuous polycondensation of higher aliphatic .omega.-amino

A process for manufacturing a thermoplastic polymer container having a triple-wall structure is provided in which the outer and inner laminates are composed of an olefin polymer and the medial laminate is composed of polyamide. The medial polyamide laminate is characterized as containing, incorporated therein, 3 to 45% by weight of an ethylene copolymer containing 0.1 to 10% by mole, in polymerized form, of at least one metal salt of acrylic or methacrylic acid, and having a thickness of 2 to 30% by weight based on the total thickness of the three laminates. The container is manufactured by extruding the polymer melts while the three independent streams of the polymer melts to be formed into the three laminates are joined together within a die such that the thickness of said medial laminate is 2 to 30%, based on the total thickness of the three laminates, and then blow-molding the extruded composite polymer tube into the shape of a container.

Process for manufacturing a triple-wall container

Hot-melt adhesives for fibers consisting essentially of copolyamides obtained by polymerizing four monomer units, namely, .epsilon.-caprolactam, hexamethylenediammonium adipate, hexamethylenediammonium sebacate, and laurolactam in specific proportions.

Hot melt adhesives from lactam copolyamides

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Nagoya, Japan

Yoshiyuki Komuro