Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1994-08-22
1996-04-23
Withers, James D.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156181, 1562733, 264 292, 264 296, 26421112, 264488, D04H 316, D01C 500, C01B 3100, D29C 4788
Patent
active
055099866
ABSTRACT:
A process for preparing an ignition resistant carbonaceous material by exposing a meltblown or spunbonded acrylic precursor material in the form of at least one ply of a generally planar fibrous web, matt or batt to ionizing radiation to crosslink said acrylic material which is then heat treated in an inert atmosphere to increase the carbon content of said irradiated material to form said carbonaceous material. The invention also resides in a continuous self bonded fibrous carbonaceous material having a carbon content of from about 65% to less than about 92%, an oxygen content of less than about 2%, and a specific resistivity of from about 10.sup.-1 to about 10.sup.-10 ohm-cm. Preferably said carbonaceous material has an oxygen content of less than about 1% and a nitrogen content of from about 5% to about 30%.
REFERENCES:
patent: 4698189 (1987-10-01), Tetzlaff
patent: 4902561 (1990-02-01), McCullough, Jr. et al.
patent: 4981751 (1991-01-01), Daumit et al.
patent: 5399423 (1995-03-01), McCullough et al.
The Dow Chemical Company
Withers James D.
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