Sizing agent for carbon fiber, aqueous dispersion of the...

Details Sizing agent for carbon fiber, aqueous dispersion of the... Sizing agent for carbon fiber, aqueous dispersion of the...

2006-12-19

2006-12-19

Feely, Michael J. (Department: 1712)

Stock material or miscellaneous articles

Self-sustaining carbon mass or layer with impregnant or...

C428S375000, C428S413000, C525S524000, C252S008830

Reexamination Certificate

active

07150913

ABSTRACT:
A sizing agent for carbon fiber comprising either a component (A) and a component (B), or alternatively, a component (A′), a component (B′) and a component (D), each of which is described below. Component (A): an epoxy compound with at least 1 epoxy group within each molecule, and with a surface energy of 17 to 34 mJ/m2; component (B): an epoxy compound with at least 1 epoxy group within each molecule, and with a surface energy of at least 35 mJ/m2; component (A′): an epoxy compound with at least 2 epoxy groups within each molecule, and with a surface energy of 17 to 34 mJ/m2; component (B′): an epoxy compound with at least 2 epoxy groups within each molecule, and with a surface energy of at least 35 mJ/m2; and component (D): an anionic surfactant with an aryloxy group as a hydrophobic group, with an ammonium ion as a counter ion, and with an alkylene oxide addition quantity of no more than 10 moles.

REFERENCES:
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Abstract of JP 56-076448, provided by the JPO website.
Abstract of JP 63-230543, provided by the JPO website.
U.S. Appl. No. 10/478,473, filed Nov. 21, 2003, Sugiura et al.
U.S. Appl. No. 10/484,493, filed Jan. 22, 2004, Sugiura et al.

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