Barium-free Type I, Class B laboratory soda-alumina-borosilicate

Details Barium-free Type I, Class B laboratory soda-alumina-borosilicate Barium-free Type I, Class B laboratory soda-alumina-borosilicate

1981-12-14

1983-05-31

McCarthy, Helen M.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

65 61, 501 56, C03C 308

Patent

active

043861644

ABSTRACT:
There is disclosed a barium-free Type I, Class B laboratory glass according to the standard specification set forth in ASTM E 438-80a having a linear coefficient of expansion (0.degree. to 300.degree. C., cm/cm-.degree.C..times.10.sup.-7) of about 48 to 56 and having a chemical durability, maximum titration equivalent of: 0.2N H.sub.2 SO.sub.4 /10 g of glass of 1.0 ml, the composition consisting essentially of the following ingredients in approximate percent by weight:

REFERENCES:
patent: 3054686 (1962-09-01), Hagedorn
patent: 3985535 (1976-10-01), Bennett et al.

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