Patent ID: 7341966
Filing Date: 2008-03-11
Classification: B01J,B81C,C03B,C03C

Abstract:
1. A borosilicate glass, wherein the CTE of the borosilicate glass is in a range from about 30×10 −7 /° C. to 45×10 −7 /° C., wherein the softening point of the borosilicate glass is in a range between about 600 and 1000° C., wherein the borosilicate glass has a percent weight loss of less than 10 milligrams/dm 2 according to an acid resistance test, wherein the borosilicate glass has a percent weight loss of less than 250 milligrams/dm 2 according to an alkali resistance test, and wherein the borosilicate glass comprises: SiO B Al lithium oxide (Li wherein the borosilicate glass resists devitrification upon sintering without the addition of an inhibitor oxide, and wherein the borosilicate glass further includes one or more alkaline-earth oxides or rare-earth oxides, wherein the sum of the weight percentages of the one or more alkaline-earth oxides or rare-earth oxides is in a range between about 0.1% and 7% by total composition weight.