Patent ID: 11884586
Assignee: NITTO BOSEKL CO., LTD.
Field: Materials, metallurgy (Chemistry)
Classification: CPC C  B | IPC C

Claim 0:
1. A glass composition for glass fiber comprising:
SiO2 in a range of 45.60 to 59.00% by mass,
Al2O3 in a range of 10.00 to 16.00% by mass,
CaO in a range of 17.00 to 25.00% by mass,
TiO2 in a range of 0.01 to 9.50% by mass,
P2O5 in a range of 0.03 to 7.00% by mass,
ZnO in a range of 0.00 to 9.50% by mass,
SO3 in a range of 0.00 to 2.00% by mass,
ZnO and SO3 in a range of 0.01 to 11.50% by mass in total, and
Na2O, K 2 O, and Li2O in a range of 0.00 to 2.00% by mass in total, with respect to the total amount of the glass composition for glass fiber, wherein
a content SI of SiO2, a content A of Al2O3, a content C of CaO, a content T of TiO2, a content P of P2O5, a content Z of ZnO, and a content SO of SO3 satisfy following formula (1):

15.0≤(SI/C)2×(A/T)×{P/(SO+Z)}1/4≤690.1  (1).