Plastic and nonmetallic article shaping or treating: processes – With printing or coating of workpiece – Coating or impregnating workpiece before molding or shaping...
Patent
1988-10-21
1991-04-02
Woo, Jay H.
Plastic and nonmetallic article shaping or treating: processes
With printing or coating of workpiece
Coating or impregnating workpiece before molding or shaping...
264257, 26433112, 525432, 528352, 528350, B29C 6714, C08G 7314
Patent
active
050045750
ABSTRACT:
Composite materials with matrices of tough, thermoplastic aromatic polyimides are obtained by blending semi-crystalline polyimide powders with polyamic acid solutions to form slurries, which are used in turn to prepare prepregs, the consolidation of which into finished composites is characterized by excellent melt flow during processing.
REFERENCES:
patent: 4066631 (1977-01-01), Dimmig
patent: 4107125 (1978-08-01), Lovejoy
patent: 4468506 (1984-08-01), Holub
patent: 4530993 (1985-07-01), Jinda
patent: 4695610 (1987-09-01), Egli
patent: 4765942 (1988-08-01), Christensen
"High Heat Polyimides are Easier to Process Now", Modern Plastics; Summers et al, Apr. 1989, pp. 126-131.
Baucom Robert M.
Gleason John R.
Johnston Norman J.
St. Clair Terry L.
Adams Harold W.
Durkin II Jeremiah F.
Helfrich George F.
Manning John R.
The United States of America as represented by the Administrator
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