E.i. Dupont De Nemours and Company

Orient Chemical Industries, Ltd.

Reiko Koshida

Ryuichi Hayashi

Yoshiteru Hatase

Hiroyuki Sumi

Marvin M Martens

William Ray Fielding

Masahiro Nozaki

Jennifer L Bohan

Tadao Ushida

Takeo Tasaka

Jocelyn M Willis

Wendy Tobin

Atsushi Miyabo

Thermoplastic resin compositions suitable for laser welding are described in which black colorants are added. These colorants constitute amine salt of anthraquinone dyes. Additional dyes, coloring agents, and a variety of other materials may be added. These compositions demonstrate outstanding mechanical and chemical properties once laser-welded.

Colored thermoplastic resin compositions for laser welding, anthraquinone colorants therefor and molded product therfrom

Thermoplastic resin compositions suitable for laser welding are disclosed, which include a mixture of neutral anthraquinone blue dye with other red dye to absorb visible light with wavelength less than 700 nm and transmit a laser beam with wavelength at 800 nm to 1200 nm and to enhance weldability.

Colored thermoplastic resin compositions for laser welding, specific neutral anthraquinone dyes as colorants therefor, and molded product therefrom

Thermoplastic resin compositions suitable for laser welding are disclosed, which include a mixture of neutral anthraquinone dyes and at least one other red dye to absorb and transmit select regions of visible light and to enhance weldability.

Novel fabricated resin products are described and having suitability for laser welding applications. These contain a resin part for transmitting black colorant and a resin part for absorbing black colorant.

Fabricated resin products for laser welding and including transmitting and absorbing black colorants, and colored resin compositions therefor

Thermoplastic resin compositions are disclosed that incorporate 1:2 metallic azo complex dyes and are particularly suitable for laser welding. These compositions include a variety of thermoplastic resins such as polyamides and copolymers and blends thereof. The compositions offer superior welding properties and provide for the welding of articles identically colored with these dyes.

Thermoplastic resin compositions for laser welding and articles formed therefrom

Thermoplastic resin compositions are described in which amine salts of anthraquinone dyes and monoazo complex dyes are added. These compositions show superior performance in laser welding applications.

Colored thermoplastic resin compositions for laser welding, colorants therefor of mixtures of amine salts of anthraquinone and monoazo complex dyes, and molded product therefrom

Aromatic polyamide compositions for molding

This invention deals with the development of improved SMT performance flame retardant polyamide compositions. The compositions include replacing the poly bromostyrene or brominated polystyrene with a copolymer of a halostyrene and glycidyl(meth)acrylate. The resulting composition results in greatly improved blistering performance in Surface Mounting Technology Applications.

Flame-retardant polyamide compositions

Certain polyamide molding compositions are disclosed having improved flame resistance and heat stability. These compositions comprise in weight percent, 20-78% polyamide having a melting point of 280-340&deg; C.; 10-60% inorganic filler; 10-35% flame retardant (brominated or chlorinated); 1-10% antimony compound; 1-10% of one or more oxides, hydroxides, or salts of weak mineral acids, and combinations thereof; and 0-2% heat stabilizer.

Thermally stable flame retardant polyamides

An aromatic polyamide resin composition composed of two types of aromatic polyamide (A) and (B), where (A) is an aromatic polyamide wherein the molar ratio of aromatic polyamide with respect to the monomer components that constitute the polyamide is 0.4 or greater, and (B) is an aromatic polyamide containing an aromatic monomer as the monomer component that constitutes the polyamide and has a recrystallization temperature that is lower than that of the aromatic polyamide (A), where said aromatic polyamide resin composition has a recrystallization temperature that is 10.degree. C. or more lower than the recrystallization temperature of the aromatic polyamide (A). Merit: The aromatic polyamide composition of the present invention has the high heat resistance characteristic of aromatic polyamides, superior dimensional stability with respect to water absorption, and maintenance of physical stability and chemical resistance, while providing improved molding characteristics.

Growing community of inventors

Utsunomiya, Japan

Reiko Koshida