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CAS indexed 7 chemical substances from this document.
CAS subject entries for this document include: Ceramic materials and wares; Carbon fibers, processes. | |
CAPLUS COPYRIGHT 2005 ACS on STN
| TITLE:
| Functionalized graphitic fibrils for reinforcing ceramics |
| INVENTOR(S):
| Fisher, Alan; Hoch, Robert; Moy, David; Niu, Chunming; Ogata, Naoya; Tennent, Howard |
| PATENT ASSIGNEE(S):
| Hyperion Catalysis International, Inc., USA |
| SOURCE:
| PCT Int. Appl., 77 pp. CODEN: PIXXD2 |
| LANGUAGE:
| English |
PATENT INFORMATION: PATENT NO. KIND DATE APPLICATION NO. DATE
--------------- ---- -------- -------------------- --------
WO 9618059 A1 19960613 WO 1995-US16159 19951208
W: AU, BR, CA, JP, KR, MX, RU
RW: AT, BE, CH, DE, DK, ES, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE
US 6203814 B1 20010320 US 1994-352400 19941208
CA 2207282 AA 19960613 CA 1995-2207282 19951208
AU 9645980 A1 19960626 AU 1996-45980 19951208
AU 707522 B2 19990715
EP 796403 A1 19970924 EP 1995-944093 19951208
EP 796403 B1 20031029
R: AT, BE, CH, DE, DK, ES, FR, GB, GR, IE, IT, LI, LU, MC, NL, PT, SE
JP 11502494 T2 19990302 JP 1996-517817 19951208
AT 253193 E 20031115 AT 1995-944093 19951208
ES 2210324 T3 20040701 ES 1995-944093 19951208
ABSTRACT:
The functionalized fibrils have a compn. of the formula [CnHL]Rm, wherein Cn is surface C of a substantially cylindrical, graphitic nanotube having a length/diam. ratio of >5 and a diam. of <0.5 .mu.m or graphitic fibril being substantially free of pyrolytically deposited C; n is an integer; L is a no. <0.1n; m is a no. <0.5 n; R is selected from SO3H, COOH, NH2, OH, CHO, CN, COCl, halide, COSH, SH, COOR', SR', SiR'3, Si(OR')yR'3-y', Si(OSiR'2)OR', R'', Li, AR'2, Hg-X, TlZ2 and Mg-X; y .ltoreq.3; R' = alkyl, aryl, cycloalkyl, aralkyl, or cycloaryl; R'' = fluoroalkyl, fluoroaryl, fluorocycloalkyl, or fluoroaralkyl; x = halide; z = carboxylate or trifluoroacetate. The compn. is formed by reacting the surface C with an appropriate reagent under conditions sufficient to form functionalized nanotubes having the formula [CnHL]Rm. The functionalized C nanotubes are used for manuf. of reinforced ceramics.
Updated 5/11/2007 11:42:04 AM
