Low-dielectric-constant glass fiber and glass fiber fabric...

Details Low-dielectric-constant glass fiber and glass fiber fabric... Low-dielectric-constant glass fiber and glass fiber fabric...

2005-01-25

2005-01-25

Group, Karl (Department: 1755)

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

C501S035000, C501S036000, C501S069000, C501S070000

Reexamination Certificate

active

06846761

ABSTRACT:
Low-dielectric-constant glass fibers having a glass composition comprising, by weight %, 50 to 60% of SiO2, 10 to 18% of Al2O3, 14% to less than 20% of B2O3, 1% to less than 6% of MgO, 2 to 5% of CaO, 0.5 to 5% of TiO2, 0 to 0.3% of Li2O, 0 to 0.3% of Na2O, 0 to 0.5% of K2O and 0 to 2% of F2, the content of MgO+CaO being 4 to 11% and the content of Li2O+Na2O+K2O being 0 to 0.6%. The glass fiber has a low dielectric constant and a low dielectric tangent, is excellent in productivity and workability and is also excellent in water resistance, and the glass fiber is suitable for reinforcing printed wiring boards for high-density circuits.

REFERENCES:
patent: 4824806 (1989-04-01), Yokoi et al.
patent: 5958808 (1999-09-01), Mori et al.
patent: 6309990 (2001-10-01), Tamura et al.
patent: 62-226839 (1987-10-01), None
patent: 64-51345 (1989-02-01), None
patent: 6-219780 (1994-08-01), None
patent: 7-10598 (1995-01-01), None
patent: 8-333137 (1996-12-01), None
patent: 9-74255 (1997-03-01), None
patent: 10167759 (1998-06-01), None
patent: WO 9816482 (1998-04-01), None
Machine translation of JP 9-74255.*
Machine translation of JP 7-10598.*
Machine translation of JP10-167759.

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