Kuraray Co., Ltd.

Toshiaki Takagi

Takashi Nishida

Kazuo Itoi

Akio Ohmory

Hiroyuki Akasu

Kozo Nakao

Masahisa Tanomura

Takuo Kawaguchi

Yoshihiko Yamada

Hidehiko Shimamura

Hiroyuki Nomori

A reinforced therapeutic tube which is excellent in kink resistance, pressure resistance and flexibility. The tube is made of an elastomeric material with a reinforcing material spirally embedded into the tube wall, and at least one of the tubular parts where no spiral reinforcing material exists. The tip end of the reinforcing material which is wound in spiral shape is bent parallel to the inside surface of the tube and inward of the tube for at least one or more pitches of the spiral, and at least the tip of the reinforcing material bent is buried into the inside wall of the tube.

Reinforced therapeutic tube

An organic halide (1) having the general formula: ##STR1## wherein X is a halogen atom, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 is a hydrogen atom, a hydrocarbon group or a halogenated hydrocarbon group, R.sup.1 may be a group having the formula: ##STR2## wherein R is an aliphatic, alicyclic or aromatic radical, and R.sup.3 and R.sup.4 may be a group consisting of -CH.sub.2 OH or its esters; is produced by reacting an organic halide (2) having the formula: ##STR3## wherein X, R.sup.1 and R.sup.2 is the same as above, respectively; with the compound having the formula: ##STR4## wherein R.sup.3 and R.sup.4 is the same as above, respectively, in the presence of a cationic catalyst at the temperature of from -78.degree. C. to 80.degree. C.

Organic halide

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Kurashiki, Japan

Toshiaki Takagi