Industrial Technology Research Institute

Ru-Fong Laiw

Jui-Hsiang Chen

Andrew Teh Hu

Muh-Lan Chen

Jeng Wei

Shu-Fang Jiang

Chung-Yi Chang

Yu-Der Lee

Hung-Chou Kang

Yuan-Der Wu

Fan-Yen Lee

Chin-Jiuh Kang

A porous polyurethane tube suitable for use as a vascular graft prosthesis is prepared by placing solvent type polyurethane resin coated mandrel in a static coagulant consisting of water, ethanol and optionally aprotic solvent within 30 seconds immediately after the coating step, separating the tube by placing the mandrel in a swelling agent containing at least 90 percent by weight of ethanol and rinsing with a solution containing at least 80 percent by weight ethanol.

Method for preparing a porous polyurethane vascular graft prosthesis

A pultrusion processing method for long fiber-reinforced nylon which combines the nylon anionic ring-opening polymerization technology and the pultrusion processing method to manufacture long fiber-reinforced thermoplastic nylon composites. The method comprises the steps of forming an active caprolactam sodium salt catalyst composition by reacting melt nylon 6 monomer raw material, i.e., caprolactum, with sodium hydride, forming co-catalyst composition by melting caprolactam and a polymeric co-catalyst, then mixing the active caprolactum sodium salt catalyst composition and the co-catalyst composition in a continuous mixing device to obtain a reaction mixture with low viscosity. The mixture is then charged into a closed impregnating tank to impregnate preheated and dried reinforced fiber, which is immediately pulled into a hot mold for composite molding processing to form a finished product of long fiber-reinforced nylon composites.

Pultrusion process for long fiber-reinforced nylon composites

Growing community of inventors

Hsinchu, Taiwan

Ru-Fong Laiw