Prepreg

Stock material or miscellaneous articles – Composite – Of carbohydrate

Reexamination Certificate

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C428S536000, C428S537500

Reexamination Certificate

active

10483610

ABSTRACT:
A prepreg can be obtained by impregnating a base paper with a heat-curing resin free from formaldehyde, the prepreg exhibiting a residual moisture content of 2 to 4% by weight after drying, the resin of the prepreg being non-crosslinked and exhibiting a degree of crosslinking of maximum about 85% in the case of thermal treatment of the prepreg over a period of about 40 seconds at about 132° C.

REFERENCES:
patent: 4377458 (1983-03-01), Watanabe
patent: 4652324 (1987-03-01), Yamashina et al.
patent: 5607769 (1997-03-01), Choate
patent: 5885719 (1999-03-01), Perrin
patent: 6113987 (2000-09-01), Horst
patent: 6143369 (2000-11-01), Sugawa et al.
patent: 6146746 (2000-11-01), Reck et al.
patent: 6299936 (2001-10-01), Reck et al.
patent: 6312827 (2001-11-01), Horst
patent: 6709764 (2004-03-01), Perrin et al.
patent: WO 95/17551 (1995-06-01), None
patent: WO 99/28554 (1999-06-01), None
patent: WO 00/53667 (2000-09-01), None
patent: WO00/53667 (2000-09-01), None
H. Arnold et al. “Herstellung einseitig impragnierter Druckpapiere mittles Filmpresse”, Wochenblatt fur Papierfabrikation, Jun. 2000, pp. 350-355.
E.Zeyringer et al. “Einflusse der Trocknung auf die Eigenschaftsentwicklung holzfreier mehrfact gestrichener Papiere”, Wochenblatt fur Papierfabrikation,Jun. 2000, p. 356.
Von Holger Arnold et al. “Neue Vorimpragnate”, Werkstoffe Dekorpapier, HK, Jun. 2001, pp. 36-38.

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