Toray Industries, Inc.

Takeshi Nishioka

Satoyuki Minami

Kazuhiro Tanaka

Mamoru Koebisu

Hirosi Kawano

Nario Kamijyukkoku

Akira Nakamura

Kenji Yabe

A crosslinked polyvinyl chloride resin composition comprising:

Expandable polyvinyl chloride resin composition and foamed sheet

The present invention relates to a polyethylene terephthalate film having the sum of F-5 values in longitudinal and transverse directions of 3500 to 5000 kg/cm.sup.2, absolute heat shrinkages in longitudinal and transverse directions at 100.degree. C. of up to 2.5% and amorphous orientation factor of -1.5 to 0.5, a process for the production thereof and a magnetic recording medium containing the film as a base. The polyethylene terephthalate film useful as a magnetic recording medium having super high-tensile-strength in both longitudinal and transverse directions and a low heat shrinkage is provided, while it has been considered that such properties could not be obtained in polyethylene terephthalate film.

Production of polyethylene terephthalate film for magnetic recording

Polyethylene terephthalate film, process for the production thereof and

The present invention relates to a flame-retardant polyolefin foam comprising a polyolefinic thermoplastic resin consisting mainly of a homopolymer of .alpha.-olefin or copolymer of .alpha.-olefins having 2 to 10 carbon atoms; 2 to 10 percent by weight as bromine content, based on the weight of the foam, of a bisphenol A-based brominated epoxy resin or a crosslinked product thereof; and 0 to 25 percent by weight, based on the weight of the foam, of an inorganic filler. The foam of the present invention has superior flame retardancy and thermoformability in addition to the superior heat insulating property and shock absorbing property of the polyolefin foam, and because of these superior characteristics it is useful as an automotive interior material, etc.

Flame-retardant polyolefin foam

Growing community of inventors

Ohtsu, Japan

Takeshi Nishioka