SiO2 -AlPO4 Glass batch compositions

Claim 2

A glass batch composition for producing a glass having a linear coefficient of thermal expansion of from about 4 × 10 - 7 to about 20 × 10 - 7 over the temperature range of from 0°-300°C., said glass batch composition consisting essentially of an admixture of the following components in the indicated ranges of mole percents of the total composition: Component Mole Percent Range ______________________________________ SiO.sub.2 70-87 AlPO.sub.4 5.0-10.0 TiO.sub.2 2.0-10.0. ______________________________________

Claim 3

A glass batch composition for producing a glass having a linear coefficient of thermal expansion within the range of from about 4 × 10 - 7 to about 20 × 10 - 7 over the temperature range of from 0°-300°C., said glass batch composition consisting essentially of an admixture of the following components in the indicated ranges of mole percents of the total batch composition:Component Mole Percent Range______________________________________SiO 2 70-87AlPO 4 1.0-10TiO 2 4-14GeO 2 up to 10.______________________________________

Claim 4

A glass batch composition for producing a glass having a linear coefficient of thermal expansion within the range of from about 4 × 10 - 7 to about 20 × 10 - 7 over the temperature range of from 0°-300°C., said glass batch composition consisting essentially of an admixture of the following components in the indicated ranges of mole percents of the total batch composition:Component Mole Percent Range______________________________________SiO 2 70-87AlPO 4 1.0-10TiO 2 4-14GeO 2 up to 10.______________________________________

Claim 5

A glass batch composition as defined in claim 2, wherein the SiO 2 and AlPO 4 together total at least 80.0 mole percent of the glass batch composition.

Claim 6

A glass batch composition as defined in claim 2, wherein said glass batch composition consists essentially of: Component Mole Percent Range ______________________________________ SiO.sub.2 75-85 AlPO.sub.4 4.9-10 TiO.sub.2 5-14 GeO.sub.2 1-10. ______________________________________

Claim 7

A glass batch composition for producing a glass having a low to medium linear coefficient of thermal expansion in the temperature range of from 0°-300°C., said glass batch composition consisting essentially of 75-85 mole percent SiO 2 , 4.9-10 mole percent AlPO 4 , 5-10 mole percent TiO 2 , together with at least one compatible glass batch component selected from the following group in an amount within the indicated range of mole percent amounts of the total glass batch composition: Component Mole Percent Range ______________________________________ P.sub.2 O.sub.5 0-5 B.sub.2 O.sub.3 0-5. ______________________________________

Claim 8

A glass batch composition for producing a glass having a low to medium linear coefficient of thermal expansion in the temperature range of from 0°-300°C., said glass batch composition consisting essentially of 75-85 mole percent SiO 2 , 4.9-10 mole percent AlPO 4 , 5-10 mole percent TiO 2 , together with at least one compatible glass batch component selected from the following group in an amount within the indicated range of mole percent amounts of the total glass batch composition: Component Mole Percent Range ______________________________________ P.sub.2 O.sub.5 0-5 B.sub.2 O.sub.3 0-5. ______________________________________

Claim 9

A glass batch composition as defined in claim 5, wherein the P 2 O 5 and B 2 O 3 components rspectively constitute at least 2.5 mole percent of the total glass batch composition.

Claim 10

A glass batch composition for producing a glass having a linear coefficient of thermal expansion within the range of from about 4 × 10 - 7 to about 20 × 10 - 7 over the temperature range of from 0°-300°C., said glass batch composition consisting essentially of an admixture of the following components in the indicated ranges of mole percents of the total batch composition:Component Mole Percent Range______________________________________SiO 2 75-80AlPO 4 1-10TiO 2 0-10B 2 O 3 2.5-5P 2 O 5 2.5-5.______________________________________

Claim 11

A glass batch composition for producing a glass having a linear coefficient of thermal expansion within the range of from about 4 × 10 - 7 to about 20 × 10 - 7 over the temperature range of from 0°-300°C., said glass batch composition consisting essentially of an admixture of the following components in the indicated ranges of mole percents of the total batch composition:Component Mole Percent Range______________________________________SiO 2 75-80AlPO 4 1-10TiO 2 0-10B 2 O 3 2.5-5P 2 O 5 2.5-5.______________________________________

Claim 12

A glass batch composition for producing a glass having a low to medium linear coefficient of thermal expansion in the temperature range of from 0°-300°C., said glass batch composition consisting essentially of the following components in the indicated ranges of mole percent amounts of the total glass batch composition: Component Mole Percent Range ______________________________________ SiO.sub.2 75-85 AlPO.sub.4 1-10 TiO.sub.2 2-10 B.sub.2 O.sub.3 4-5 GeO.sub.2 0-10. ______________________________________

Claim 13

A glass batch composition for producing a glass having a low to medium linear coefficient of thermal expansion in the temperature range of from 0°-300°C., said glass batch composition consisting essentially of the following components in the indicated ranges of mole percent amounts of the total glass batch composition: Component Mole Percent Range ______________________________________ SiO.sub.2 75-85 AlPO.sub.4 1-10 TiO.sub.2 2-10 B.sub.2 O.sub.3 4-5 GeO.sub.2 0-10. ______________________________________

Claim 14

A glass batch composition as defined in claim 8, wherein B 2 O 3 constitutes about 4.5 mole percent and GeO 2 constitutes about 5 mole percent.

Claim 15

A glass batch composition for producing a glass having a low to medium linear coefficient of thermal expansion in the temperature range of from 0°-300°C., said glass batch composition consisting essentially of 75-85 mole percent SiO 2 , 1-10 mole percent AlPO 4 , 2-10 mole percent TiO 2 , together with at least two glass batch components selected from the following group of components in an amount within the indicated mole percent range of the total glass batch composition: Component Mole Percent Range ______________________________________ GeO.sub.2 0-10 Al.sub.2 O.sub.3 0-5 B.sub.2 O.sub.3 0-4.5. ______________________________________

Claim 16

A glass batch composition for producing a glass having a low to medium linear coefficient of thermal expansion in the temperature range of from 0°-300°C., said glass batch composition consisting essentially of 75-85 mole percent SiO 2 , 1-10 mole percent AlPO 4 , 2-10 mole percent TiO 2 , together with at least two glass batch components selected from the following group of components in an amount within the indicated mole percent range of the total glass batch composition: Component Mole Percent Range ______________________________________ GeO.sub.2 0-10 Al.sub.2 O.sub.3 0-5 B.sub.2 O.sub.3 0-4.5. ______________________________________

Claim 17

A glass batch composition for producing a glass having a low to medium linear coefficient of thermal expansion in the temperature range of from 0°-300°C., said glass batch composition consisting essentially of 75-85 mole percent SiO 2 , 1-10 mole percent AlPO 4 , 2-10 mole percent TiO 2 , together with at least two glass batch components selected from the following group of components in an amount within the inicated mole percent range of the total glass batch composition: Component Mole Percent Range ______________________________________ GeO.sub.2 0-10 Al.sub.2 O.sub.3 0-5 V.sub.2 O.sub.3 0-5. ______________________________________

Claim 18

A glass batch composition for producing a glass having a low to medium linear coefficient of thermal expansion in the temperature range of from 0°-300°C., said glass batch composition consisting essentially of 75-85 mole percent SiO 2 , 1-10 mole percent AlPO 4 , 2-10 mole percent TiO 2 , together with at least two glass batch components selected from the following group of components in an amount within the inicated mole percent range of the total glass batch composition: Component Mole Percent Range ______________________________________ GeO.sub.2 0-10 Al.sub.2 O.sub.3 0-5 V.sub.2 O.sub.3 0-5. ______________________________________

Claim 19

A glass batch composition for producing a glass having a linear coefficient of thermal expansion within the range of from about 4 × 10 - 7 to about 20 × 10 - 7 over the temperature range of from 0°-300°C., said glass batch composition consisting essentially of an admixture of the following components in the indicated ranges of mole percents of the total batch composition:Component Mole Percent Range______________________________________SiO 2 73-85AlPO 4 5-10TiO 2 6-10CuO 3-10B 2 O 3 0.-4.5V 2 O 5 0-2.25.______________________________________

Claim 20

A glass batch composition for producing a glass having a linear coefficient of thermal expansion within the range of from about 4 × 10 - 7 to about 20 × 10 - 7 over the temperature range of from 0°-300°C., said glass batch composition consisting essentially of an admixture of the following components in the indicated ranges of mole percents of the total batch composition:Component Mole Percent Range______________________________________SiO 2 73-85AlPO 4 5-10TiO 2 6-10CuO 3-10B 2 O 3 0.-4.5V 2 O 5 0-2.25.______________________________________

Claim 21

A glass batch composition for producing a glass having a linear coefficient of thermal expansion within the range of from about 4 × 10 - 7 to about 20 × 10 - 7 over the temperature range of from 0°-300°C., said glass batch composition consisting essentially of an admixture of the following components in the indicated ranges of mole percents of the total composition:Component Mole Percent Range______________________________________SiO 2 75-82AlPO 4 6.5-10.TiO 2 5-6CdO 1-10B 2 O 3 0-4.5.______________________________________

Claim 22

A glass batch composition for producing a glass having a linear coefficient of thermal expansion within the range of from about 4 × 10 - 7 to about 20 × 10 - 7 over the temperature range of from 0°-300°C., said glass batch composition consisting essentially of an admixture of the following components in the indicated ranges of mole percents of the total composition:Component Mole Percent Range______________________________________SiO 2 75-82AlPO 4 6.5-10.TiO 2 5-6CdO 1-10B 2 O 3 0-4.5.______________________________________