Patent ID: 6017835
Filing Date: 2000-01-25
Classification: C03C,Y10T

Abstract:
Irregularly-shaped glass fibers suitable for insulation comprising first and second glass compositions having:a. nonidentical coefficients of thermal expansion, the nonidentical coefficients of thermal expansion having a difference greater than about 2.0 ppm/.degree. C.,b. log3 viscosity temperatures within the range of from about 1850 to about 2050.degree. F. (1010 to 1121.degree. C.),c. liquidus temperatures of at least 50.degree. F. (28.degree. C.) below that of the log3 viscosity temperatures, andd. chemical durabilities of less than about 4.0% wherein the glass fibers comprise two components wherein one component is made of the first glass composition and the second component is made of the second glass composition.