EP 4085033 A4 20240501 - LOW DIELECTRIC GLASS COMPOSITION, FIBERS, AND ARTICLE

Title (en)

LOW DIELECTRIC GLASS COMPOSITION, FIBERS, AND ARTICLE

Title (de)

NIEDRIGDIELEKTRISCHE GLASZUSAMMENSETZUNG, FASERN UND ARTIKEL

Title (fr)

COMPOSITION DE VERRE À FAIBLE CONSTANTE DIÉLECTRIQUE, FIBRES ET ARTICLE

Publication

EP 4085033 A4 20240501 (EN)

Application

EP 20909139 A 20201229

Priority

US 202016732825 A 20200102
US 202016792658 A 20200217
US 2020067269 W 20201229

Abstract (en)

[origin: WO2021138295A1] Glass compositions and glass fibers having low dielectric constants and low dissipation factors that may be suitable for use in electronic applications and articles are disclosed. The glass fibers and compositions of the present invention may include between 48.0 to 57.0 weight percent SiO2; between 15.0 and 26.0 weight percent B2O3; between 12.0 and 18.0 weight percent Al2O3; between greater than 3.0 and 8.0 weight percent P2O5; between greater than 0.25 and 7.00 weight percent CaO; 5.0 or less weight percent MgO; and 6.0 or less weight percent TiO2. Further, the glass composition has a glass viscosity of 1000 poise at a temperature greater than 1350 degrees Celsius and a liquidus temperature greater than 1100 degrees Celsius.

IPC 8 full level

C03C 3/087 (2006.01); C03C 3/091 (2006.01); C03C 3/097 (2006.01); C03C 13/00 (2006.01)

CPC (source: EP KR)

C03C 3/097 (2013.01 - EP KR); C03C 13/00 (2013.01 - EP KR)

Citation (search report)

[I] CN 101269915 A 20080924 - UNIV JINAN [CN]
[A] CN 101448753 A 20090603 - NIPPON ELECTRIC GLASS CO [JP]
[A] WO 2018125736 A1 20180705 - AGY HOLDING CORP [US]
See also references of WO 2021138295A1

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

WO 2021138295 A1 20210708; WO 2021138295 A9 20220203; CN 114901605 A 20220812; CN 114901609 A 20220812; EP 4085033 A1 20221109; EP 4085033 A4 20240501; EP 4085036 A1 20221109; EP 4085036 A4 20240515; JP 2023509138 A 20230307; JP 2023509139 A 20230307; KR 20220123424 A 20220906; KR 20220123425 A 20220906; WO 2021138304 A1 20210708

DOCDB simple family (application)

US 2020067269 W 20201229; CN 202080091377 A 20201229; CN 202080091382 A 20201229; EP 20909139 A 20201229; EP 20909503 A 20201229; JP 2022540656 A 20201229; JP 2022540657 A 20201229; KR 20227026166 A 20201229; KR 20227026198 A 20201229; US 2020067283 W 20201229