Back to results
US 2012/0058878 A1Published application
Low Dielectric Glass And Fiber Glass
AssigneePPG Industries Ohio, Inc.
InventorsHong Li, Cheryl A. Richards
Life of this patent
Estimating the term…
Abstract
Glass compositions are provided that are useful in a variety of applications including, for example, electronics applications, reinforcement applications, and others. Some embodiments of glass compositions can provide desirable dielectric constants, desirable dissipation factors, and/or desirable mechanical properties while also having desirable fiber forming properties.
Claims52
A glass composition suitable for fiber forming comprising:
- SiO2
- 53.5-77
- weight percent;
- B2O3
- 4.5-14.5
- weight percent;
- Al2O3
- 4.5-18.5
- weight percent;
- MgO
- 4-12.5
- weight percent;
- CaO
- 0-10.5
- weight percent;
- Li2O
- 0-4
- weight percent;
- Na2O
- 0-2
- weight percent;
- K2O
- 0-1
- weight percent;
- Fe2O3
- 0-1
- weight percent;
- F2
- 0-2
- weight percent;
- TiO2
- 0-2
- weight percent;
- and
- other constituents
- 0-5
- weight percent total.
34 more elements
A glass composition suitable for fiber forming comprising:
- SiO2
- at least 60
- weight percent;
- B2O3
- 5-11
- weight percent;
- Al2O3
- 5-18
- weight percent;
- MgO
- 5-12
- weight percent;
- CaO
- 0-10
- weight percent;
- Li2O
- 0-3
- weight percent;
- Na2O
- 0-2
- weight percent;
- K2O
- 0-1
- weight percent;
- Fe2O3
- 0-1
- weight percent;
- F2
- 0-2
- weight percent;
- TiO2
- 0-2
- weight percent;
- and
- other constituents
- 0-5
- weight percent total.
34 more elements
A glass composition suitable for fiber forming comprising:
- SiO2
- 60-68
- weight percent;
- B2O3
- 5-10
- weight percent;
- Al2O3
- 10-18
- weight percent;
- MgO
- 8-12
- weight percent;
- CaO
- 0-4
- weight percent;
- Li2O
- 0-3
- weight percent;
- Na2O
- 0-2
- weight percent;
- K2O
- 0-1
- weight percent;
- Fe2O3
- 0-1
- weight percent;
- F2
- 0-2
- weight percent;
- TiO2
- 0-2
- weight percent;
- and
- other constituents
- 0-5
- weight percent total.
34 more elements
A glass composition suitable for fiber forming comprising:
- SiO2
- 62-68
- weight percent;
- B2O3
- less than about 9
- weight percent;
- Al2O3
- 10-18
- weight percent;
- MgO
- 8-12
- weight percent;
- and
- CaO
- 0-4
- weight percent;
- wherein the glass exhibits a dielectric constant (Dk) less than 6.7 and a forming temperature (TF) at 1000 poise viscosity no greater than 1370° C.
14 more elements
Dependencies are inferred from the claim text.