Mitsui Petrochemical Industries, Ltd.

Hidehiko Hashimoto

Kunihiko Mizumoto

Kiyotaka Shindo

Koichi Igarashi

Takeshi Sakashita

Masayoshi Kurisu

Takayuki Nakano

In accordance with the present invention, there are provided information recording media having a substrate and thereon a recording layer and a metallic layer, wherein the metallic layer is composed of an aluminum alloy containing (i) titanium and (ii) at least one metal selected from among chromium, niobium and magnesium. The information recording media thus provided are excellent in corrosion resistance and small in dependence of the recording power on linear velocity.

Information recording media

In an information recording medium having laminated two disc substrates by an adhesive, each disc substrate comprising a substrate and a recording layer, so that the recording layers are disposed opposite to each other, this invention provides an information recording medium wherein said adhesive is a hot melt adhesive having a softening point of 130.degree. C. or more. Said information recording medium forms no deviation betweeen two laminated disc substrates thereof and decreased deformation such as warpage even when exposed to an atmosphere at high temperature and humidity for a long time.

Information recording medium

In accordance with the present invention, there are provided information recording media having a substrate and thereon a recording layer, and a metallic layer composed of an aluminum alloy containing at least hafnium. The information recording media provided are excellent in corrosion resistance and also small in dependence of the recording power on linear velocity.

Optical recording medium with an aluminum alloy metallic layer

Disclosed is a molding reinforced polyamide composition comprising [A] a polyamide selected from a polyamide composed of (a) aromatic dicarboxylic acid component units comprising 60 to 77 mole % of terephthalic acid component units and 23 to 40 mole % of aromatic dicarboxylic acid component units other than terephthalic acid component units and (b) 1,6-diaminohexane units and a polyamide composed of (a) aromatic dicarboxylic acid component units comprising 60 to 100 mole % of terephthalic acid component units and 0 to 40 mole % of aromatic dicarboxylic acid component units other than terephthalic acid component units and (b) units of a linear aliphatic alkylene-diamine component having 7 to 18 carbon atoms, and [B] a filler in an amount of 0.5 to 200 parts by weight per 100 parts by weight of said polyamide. This composition has excellent heat resistance characteristics, mechanical properties, chemical and physical properties and molding characteristics in combination.

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Ichihara, Japan

Hidehiko Hashimoto