IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
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| 국제특허분류(IPC7판) |
|
| 출원번호 |
US-0136893
(1993-10-18)
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발명자
/ 주소 |
- Beall George H. (Big Flats NY) Pierson Joseph E. (Painted Post NY)
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| 출원인 / 주소 |
- Corning Incorporated (Corning NY 02)
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| 인용정보 |
피인용 횟수 :
13 인용 특허 :
0 |
초록
▼
This invention relates to the preparation of a glass exhibiting a transition temperature normally below about 300°, a working temperature below about 400°, while, at the same time, exhibiting excellent resistance to attack by water. Specifically, the present invention discloses a glass consisting es
This invention relates to the preparation of a glass exhibiting a transition temperature normally below about 300°, a working temperature below about 400°, while, at the same time, exhibiting excellent resistance to attack by water. Specifically, the present invention discloses a glass consisting essentially in terms of mole percent on the oxide basis, of 15-35% P2O5, 1-25% SO3, 30-55% ZnO, 0-25% R2O, wherein R2O is selected from the group consisting of 0-25% Li2O, 0-25% Na2O, and 0-25% K2O, and up to a total of 15% of optional ingredients in the indicated proportions selected from the group consisting of 0-10% Al2O3, 0-10% MgO, 0-10% CaO, 0-10% SrO, 0-10% BaO, 0-10% MnO, 0-10% transition metal oxides and 0-15% Cl+F, as analyzed in weight percent.
대표청구항
▼
A glass exhibiting a transition temperature below about 300°, a working temperature below about 400°and exhibiting excellent resistance to attack by water and mild aqueous alkaline solutions, the glass consisting essentially, expressed in terms of mole percent on the oxide basis, of 15-35% P2O5, 1-2
A glass exhibiting a transition temperature below about 300°, a working temperature below about 400°and exhibiting excellent resistance to attack by water and mild aqueous alkaline solutions, the glass consisting essentially, expressed in terms of mole percent on the oxide basis, of 15-35% P2O5, 1-25% SO3, 30-55% ZnO, 0-25% R2O, wherein R2O is selected from the group consisting of 0-25% Li2O, 0-25% Na2O, and 0-25% K2O, and up to a total of 15% of optional ingredients in the indicated proportions selected from the group consisting of 0-10% Al2O3, 0-10% MgO, 0-10% CaO, 0-10% SrO, 0-10% BaO, 0-10% MnO, 0-10% transition metal oxides and 0-15% Cl+F, as analyzed in weight percent.
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