Mixture for melt process moldings having long fiber reinforced p

Details Mixture for melt process moldings having long fiber reinforced p Mixture for melt process moldings having long fiber reinforced p

1994-12-23

1996-05-07

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524492, 524493, 523348, 523351, C08J 508, C08K 340, C08L 2312

Patent

active

055147453

ABSTRACT:
A mixture for melt process moldings, and a molding formed of the mixture. The mixture consists essentially of about 5 to about 70 wt % of a master batch prepared in the form of pellets formed by cutting a long glass fiber reinforced polypropylene resin, and about 30 to about 95 wt % of polypropylene resin. The long glass fiber reinforced polypropylene resin is prepared in such a manner that a bundle of continuous reinforcement glass fibers surface-finished with a finishing agent containing a coupling agent is impregnated with a modified polypropylene resin having a functional group capable of chemically bonding with the coupling agent and having a melt flow rate of about 70 to about 300 g/10 min (ASTM D-1238, load: 2.16 kg, temperature: 230.degree. C.) while the bundle of glass fibers is being drawn. The pellets have a length of about 2 to about 50 mm in the direction along the fibers. The glass fibers in the pellets extend uniformly in parallel with each other through a distance substantially equal to the length of the pellets. The pellets have a glass fiber content of about 60 to about 90 wt %.

REFERENCES:
patent: 5030682 (1991-07-01), Nomura et al.
patent: 5286776 (1994-02-01), Ichikawa et al.

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