Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From reactant having at least one -n=c=x group as well as...
Patent
1993-06-24
1995-06-13
Szekely, Peter A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From reactant having at least one -n=c=x group as well as...
528314, 528323, 264136, 264137, 264236, 264257, 264DIG56, B29C 6700, C08G 6900
Patent
active
054243882
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.
REFERENCES:
patent: 3494999 (1970-02-01), Heckrotte
patent: 3780157 (1973-12-01), Hechlhammer et al.
patent: 4927583 (1990-05-01), Lottiau et al.
patent: 5084222 (1992-01-01), Glemet et al.
Chen Jui-Hsiang
Kang Chin-Jiuh
Kang Hung-Chou
Laiw Ru-Fong
Wu Yuan-Der
Industrial Technology Research Institute
Liauh W. Wayne
Szekely Peter A.
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