E.i. Dupont De Nemours and Company

Celanese Polymers Holding, Inc.

Denso Corporation

Mitsui Petrochemical Industries, Ltd.

Masahiro Nozaki

Annakutty Mathew

Toshikazu Kobayashi

Shinya Goto

Reiko Koshida

Yoshikatsu Amimoto

Yoshimasa Ogo

Takahiko Nagaya

Kenji Wakatsuru

Kunihiro Oouchi

Hidetatsu Murakami

Satoshi Omori

Masaru Sudou

Mark Wichmann

Tadao Ushida

Takeo Tasaka

Ryuichi Hayashi

Provided herein are polyamide compositions having a combination of specific physical properties that enable the molding of articles comprising at least one annular connector or barb of specific dimensions for attachment of hoses to the article. Further provided are processes to prepare these compositions and articles prepared from the compositions.

Polyamide compositions

A polyamide composition comprising: (a) 30 to about 60 weight percent of at least one semi-aromatic polyamide comprising: (i) 63 to about 70 mole percent hexamethylene terephthalamide repeat units; and (ii) about 30 to about 37 mole percent hexamethylene decanamide or hexamethylene dodecanamide repeat units; (b) 3 to 30 weight percent of at least one flame retardant; (c) 0.02 to 0.65 weight percent of a lubricant; (d) 5 to 50 weight percent of at least one inorganic reinforcing agent; (e) 0 to 5 weight percent of a nucleant; and (f) 0.2 to 10 weight percent of at least one flame retardant synergist. Such compositions exhibit a combination of a molding cooling time of less than or equal to 9 seconds; a reflow peak temperature of at least 270° C.; and a flammability of V-0 measured according to UL-94 flammability test.

Flame retardant polyamide compositions

A tank bodycomprising header tanksof a radiator is composed with a polyamide composition containing polyamide 6,10, glass fiber, copper and nucleating agent. At this time, the polyamide composition contains, based on the total weight of the polyamide 6,10, the glass fiber, the copper and the nucleating agent, (a) 48.9 to 79.988 percent by weight of the polyamide 6,10, (b) 20 to 50 percent by weight of the glass fiber, (c) 0.002 to 0.1 percent by weight of the copper, and (d) 0.01 to 1.5 percent by weight of the nucleating agent, and the result of measuring half-crystallization time of the polyamide composition is 5 minutes or less. In addition, the polyamide 6,10 used has a relative viscosity, as measured in 98 percent sulfuric acid, of 2.3 to 2.9.

Automobile cooling system component

Aromatic polyamide compositions for molding

Semiaromatic polyamides, processes for preparing the same and

Fire-resistant polyamide resin composition

Growing community of inventors

Utsunomiya, Japan

Masahiro Nozaki