Teijin Limited

Seiichi Yamashiro

Hiroo Inata

Takeo Shima

Katsuhiko Hironaka

Takatoshi Kuratsuji

Yoshinari Ogawa

Tooru Matsubayashi

Takayuki Kobayashi

Masao Yoshimura

A resin composition comprising a nylon-4,6 resin, an epoxy compound having two epoxy groups and at least one polymer selected from halogenated polystyrenes and halogenated poly-alpha-methylstyrenes, represented by the following general formula (I) ##STR1## (wherein R is a hydrogen atom or a methyl group; X is a bromine or chlorine atom; p is an integer of 1 to 5; and n is an integer of 2 or more).

Resin compositions

A process for producing a thin-walled cylindrical body of an aromatic polyester, which comprises

Production of thin-walled cylindrical body of aromatic polyester

Heat-resistant aromatic polyester filaments having heretofore unknown physical properties and a combination of excellent heat resistance and mechanical strength, which (1) is composed of an aromatic polyester in which at least 90 mole % of the structural units are ethylene-2,6-naphthalate units, (2) has a melting point at a constant length (Tm;.degree.C.) of at least 287.degree. C., (3) has a density (d)(g/cm.sup.3) of at least 1.370, (4) is insoluble in a phenol/orthodichlorobenzene mixed solvent (mixing ratio = 6/4 on the weight basis) at 160.degree. C. and (5) meets the requirements expressed by the following formulae

Process for preparing heat-resistant aromatic polyester filaments

Growing community of inventors

Kodaira, Japan

Seiichi Yamashiro