Easy-to-clean glass or glass-ceramic cookware in the alkaline earth metal oxide-Al2O3-Sio fi
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B32B-009/00
B32B-017/06
C03C-003/10
C03C-003/22
출원번호
US-0237850
(1981-02-25)
우선권정보
FR-0005188 (1980-03-07); FR-0001801 (1981-01-30)
발명자
/ 주소
Guillevic Gildas J. M. (Avon FRX)
출원인 / 주소
Corning Glass Works (Corning NY 02)
인용정보
피인용 횟수 :
8인용 특허 :
2
초록▼
The present invention is directed to the production of glass and glass-ceramic compositions which have particular utility as culinary utensils inasmuch as they are exceptionally easy to clean after food has been burned thereon. The products have at least an integral surface layer which contains MgO-
The present invention is directed to the production of glass and glass-ceramic compositions which have particular utility as culinary utensils inasmuch as they are exceptionally easy to clean after food has been burned thereon. The products have at least an integral surface layer which contains MgO-based and/or CaO-based and/or SrO-based and/or BaO-based crystals as the predominant crystal phase. Operable compositions consist essentially, expressed in weight percent on the oxide basis, of 14.8-19.6% MgO, 16.2-20.0% Al2O3, and 58.7-66.5% SiO2, when said surface layer contains MgO-based crystals as the predominant crystal phase, 22.2-31.6% CaO, 42.8-53.9% Al2O3, and 23.8-33.6% SiO2, when said surface layer contains CaO-based crystals as the predominant crystal phase, 31-48% SrO, 24-35.7% Al2O3, and 28-35% SiO2, when said surface layer contains SrO-based crystals as the predominant crystal phase, and 42.4-45% BaO, 10-15.9% Al2O3, and 41.7-45% SiO2, when said surface layer contains BaO-based crystals as the predominant crystal phase.
대표청구항▼
A glass or glass-ceramic article having at least an integral surface layer containing MgO-based and/or CaO-based and/or SrO-based and/or BaO-based crystals which is easy to clean after partial pyrolysis of organic materials on its surface which consists essentially, expressed in weight percent on th
A glass or glass-ceramic article having at least an integral surface layer containing MgO-based and/or CaO-based and/or SrO-based and/or BaO-based crystals which is easy to clean after partial pyrolysis of organic materials on its surface which consists essentially, expressed in weight percent on the oxide basis, of: (a) 14.8-19.6% MgO, 16.2-20.0% Al2O3, and 58.7-66.5% SiO2, when said surface layer contains MgO-based crystals as the predominant crystal phase; or (b) 22.2-31.6% CaO, 42.8-53.9% Al2O3, and 23.8-33.6% SiO2, when said surface layer contains CaO-based crystals as the predominant crystal phase; or (c) 31-48% SrO, 24-35.7% Al2O3, and 28-35% SiO2, when said surface layer contains SrO-based crystals as the predominant crystal phase; or (d) 42.4-45% BaO, 10-15.9% Al2O3, and 41.7-45% SiO2, when said surface layer contains BaO-based crystals as the predominant crystal phase. A glass-ceramic article having an interior portion containing bb14.8-19.6% MgO, 16.2-20-0% Al2O3, and 58.7-66.5% SiO2, when said surface layer contains MgO-based crystals as the predominant crystal phase; or (b) 22.2-31.6% CaO, 42.8-53.9% Al2O3, and 23.8-33.6% SiO2, when said surface layer contains CaO-based crystals as the predominant crystal phase; or (c) 31-48% SrO, 24-35.7% Al2O3, and 28-35% SiO2, when said surface layer contains SrO-based crystals as the predominant crystal phase; or (d) 42.4-45% BaO, 10-15.9% Al2O3, and 41.7-45% SiO2, when said surface layer contains BaO-based crystals as the predominant crystal phase.
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이 특허에 인용된 특허 (2)
Martin Francis W. (Painted Post NY), Ceramic articles having cordierite coatings.
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