The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 13, 1995
Filed:
Jun. 24, 1993
Jui-Hsiang Chen, Hsinchu, TW;
Hung-Chou Kang, Hsinchu, TW;
Chin-Jiuh Kang, Hsinchu, TW;
Yuan-Der Wu, San Chong City, TW;
Ru-Fong Laiw, Hsinchu, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
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.