Asahi Kasei Kabushiki Kaisha

Asahi Kasei Kogyo Kabushiki Kaisha

Asahi Kasei Fibers Corporation

Tetsuko Takahashi

Jinichiro Kato

Katsuhiro Fujimoto

Junichi Kojima

Keiichi Toyoda

Shinichi Okajima

Akihito Nakazawa

Kenji Imura

The present invention relates to catheter systems and methods of treating a vascular disease using the same.

Catheter systems and methods of treating a vascular disease using the same

A low-profile stent graft has a Type-III endoleak suppression effect, avoiding the problem with a stent graft which uses an extra-thin graft incurring enlarged needle holes or needle hole parts in a suture part. The stent graft has a proximate end, a distal end, and a lumen which is positioned between the proximate end and the distal end. The stent graft is formed by coupling a cylindrical graft to a stent with a suture. The cylindrical graft is formed from a fabric having a thickness of 10-90 &#x3bc;m. The elastic modulus of the suture is 40 cN/dtex or less.

Stent graft

Provided is a superfine polyester fiber containing at least 98 wt % of a polyethylene terephthalate component, and characterized by fulfilling the following conditions: (1) the reduced viscosity (&#x3b7;sp/c) is at least 0.80 dl/g; (2) the total fineness is 7-120 dtex, and the single filament fineness is no more than 0.5 dtex; and (3) the toughness parameter (X) indicated by formula (1) is at least 2.0, the tensile strength is at least 3.5 cN/dtex and the tensile elongation is at least 12%.=(tensile strength&#xd7;&#x221a;tensile elongation)/(total fineness&#xd7;single filament fineness)&#x2003;&#x2003;formula (1).

Superfine polyester fiber and tubular seamless fabric

Polyester resin composition and fiber

The present invention provides poly(trimethylene terephthalate) copolymerized with ester-forming sulfonate and a fiber thereof. The polymer of the present invention is high in melting point, small in loss of melting viscosity and has a high molecular weight. The fiber of the present invention is high in toughness, excellent in whiteness and dyeable with a cationic dye, whereby it is useful for clothing, carpets or non-woven sheets, etc.

Modified polytrimethylene terephthalate

A polyester resin composition is disclosed, comprising poly(trimethylene terephthalate) in a proportion of 90 wt % or more, wherein the resin composition has an intrinsic viscosity of from 0.4 to 2 and contains a phosphorus compound corresponding to from 10 to 250 ppm in terms of the amount of phosphorus element, a cyclic dimer in an amount of not exceeding 3 wt % and a bis(3-hydroxypropyl)ether in an amount of 2 wt % or less. This polyester resin composition has excellent spinning stability and high melt stability and is used for the production of a poly(trimethylene terephthalate)-based fiber having excellent whiteness and high tenacity.

Growing community of inventors

Nobeoka, Japan

Tetsuko Takahashi